Key words: PVT-properties, water, n-pentane, critical state, critical points
Thermal properties of the binary system n-pentane + water (1 : 4 by weight) re phase equilibria of hydrocarbon liquid—vapor and aqueous liquid—vapor have been studied in a wide temperature range 303—674 K under elevated pressures (up to 60 MPa) along 9 isochors. The phase equilibrium lines and critical points for the system were obtained and the phase diagrams are described.
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7.0.100-2018
Thermal properties of binary n-pentane—water system = 1 : 4 / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 3-13. - DOI:
TRANSLIT
Termicheskie svojstva binarnoj sistemy sostava n-pentan:voda = 1 : 4 / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 3-13. - DOI:
En
Thermal properties of binary n-pentane—water system = 1 : 4. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 3-13 (2013). https://doi.org/
Key words: supercritical fluid chromatography, furocoumarin, methoxypsoralen, retention mechanisms
A method for separation of isomeric psoralen methoxy-derivatives, namely bergapten, xanthotoxin and isopimpinellin, is developed. The results of sorbent screening allow one to consider a normal phase elution regime as optimal for separation of these compounds in SFC. The analysis of methoxypsoralen (MOP) retention mechanisms showed that the same one is responsible for MOP’s separation on all tested silica sorbents containing polar groups, except 2-ethylpyridine and pentafluorophenyl. A possible explanation of the observed MOP’s retention phenomena is given. In the case of pentafluorophenyl sorbent π-electron intermolecular interactions play a key role in separation of closely related MOPs. It is likely that the same effects are responsible for a specific order of MOP’s elution observed when 2-ethylpyridine sorbent is used.
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7.0.100-2018
Preparative separation of psoralen methoxy-derivatives by supercritical fluid chromatography / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 14-35. - DOI:
TRANSLIT
Preparativnoe razdelenie metoksiproizvodnyh psoralena s pomoshch'yu verhkriticheskoj flyuidnoj hromatografii / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 14-35. - DOI:
En
Preparative separation of psoralen methoxy-derivatives by supercritical fluid chromatography. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 14-35 (2013). https://doi.org/
Key words: supercritical carbon dioxide, biodegradable polymers, SCF micronization, poly-3-hydroxybutyrate, SAS
Micronization of poly-3-hydroxybutyrate (PHB) using SAS technique with supercritical carbon dioxide as an antisolvent is studied experimentally. The possibility of PHB particle fabrication with different morphology (including hollow spheres) and predetermined sizes varied from 100 nm to 20 μm is demonstrated. The effect of various mechanisms of the formation of solid phase during the SAS micronization process onto the size and morphology of poly-3-hydroxybutyrate particles is evaluated and discussed.
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7.0.100-2018
SCF micronization of poly-3-hydroxybutyrate using supercritical antisolvent / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 36-45. - DOI:
TRANSLIT
SKF mikronizaciya poli-3-gidroksibutirata metodom antisol'ventnogo osazhdeniya / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 36-45. - DOI:
En
SCF micronization of poly-3-hydroxybutyrate using supercritical antisolvent. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 36-45 (2013). https://doi.org/
Key words: supercritical carbon dioxide, aliphatic polyethers, matrixes for tissue engineering
A novel method for fabrication of highly porous bioresorbable polymer matrixes for tissue engineering is proposed and developed. It is shown that injection of polymer compositions plasticized in sub- or supercritical carbon dioxide at 20—40 °C through the nozzle of certain diameter to the moulds at atmospheric or elevated (up to 6 MPa) CO2 pressure enables to fabricate highly reproducible polymer matrixes with desirable structure and morphology and mean porosity up to 96 % without use of organic solvents. The effect of chemical composition and molecular weight of initial polymers, as well as, carbon dioxide temperature and pressure in reaction and receiver chambers onto the morphology and internal structure of fabricated matrixes is studied using a scanning electron microscopy.
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7.0.100-2018
Fabrication of highly porous bioresorbable matrixes using supercritical carbon dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 46-56. - DOI:
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Poluchenie vysokoporistyh biorezorbiruemyh polimernyh matric s pomoshch'yu sverhkriticheskogo dioksida ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 46-56. - DOI:
En
Fabrication of highly porous bioresorbable matrixes using supercritical carbon dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 46-56 (2013). https://doi.org/
Key words: ESR, supercritical water, in situ spectroscopy, VO2+, VOSO4, clustering, heterogeneous catalyst, temperature gradient
Temperature variations of the EPR spectra of VO2+ ions in sub- and supercritical water, under isothermal and temperature gradient conditions are investigated using an in situ EPR. A broadening of the hyperfine structure at increasing temperature and appearance of an unresolved broad low intensity line (ΔHpp ≈ 300 Oe) in the supercritical state are observed in the absence of temperature gradients, indicating the increase of exchange interaction between VO2+ ions in supercritical water. Exchange-narrowed anisotropic absorption line is observed under the temperature gradient conditions in the subcritical water near the transition to supercritical state. The shape of this line is close to that observed in the solid salt VOSO4·3H2O. It is shown that in situ EPR allows us to investigate the effects of changing the local environment of paramagnetic ions, which is preceding a well-known process of clustering and formation of amorphous oxide particles in sub- and supercritical conditions.
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7.0.100-2018
Effects of clustering of VO2+ ions in the sub- and supercritical water. An in situ EPR study / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 57-68. - DOI:
TRANSLIT
Effekty klasterizacii ionov VO2+ v sub- i sverhkriticheskoj vode. Issledovanie metodom EPR in situ / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 57-68. - DOI:
En
Effects of clustering of VO2+ ions in the sub- and supercritical water. An in situ EPR study. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 57-68 (2013). https://doi.org/
Key words: subcritical water, Echinacea purpurea L., caftaric acid, cichoric acid, HPLC
New method for extraction of caftaric acid and cichoric acid using subcritical water is developed. This method is environmentally benign and more efficient than traditional extraction methods based on the utilization of expensive and toxic organic solvents.
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7.0.100-2018
Subcritical water extraction of cichoric and caftaric acids from Echinacea purpurea L. / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 69-79. - DOI:
TRANSLIT
Ekstrakciya kaftarovoj i cikorievoj kislot iz ekhinacei purpurnoj v srede subkriticheskoj vody / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 69-79. - DOI:
En
Subcritical water extraction of cichoric and caftaric acids from Echinacea purpurea L.. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 69-79 (2013). https://doi.org/
Key words: subcritical water, regeneration of sorbents, caprolactam, nitrobenzene, hyper-cross-linked polystyrene sorbents
Subcritical water is tested as an agent for caprolactam and nitrobenzene desorption from hyper-cross-linked polystyrene sorbents MN-202 and MN-270. The efficiencies of desorption of two mentioned compounds by subcritical water and by water solution of isopropanol are compared.
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7.0.100-2018
Caprolactam and nitrobenzene desorption from polymeric sorbents by subcritical water / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 80-86. - DOI:
TRANSLIT
Primenenie subkriticheskoj vody dlya desorbcii kaprolaktama i nitrobenzola s polimernyh sorbentov / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 80-86. - DOI:
En
Caprolactam and nitrobenzene desorption from polymeric sorbents by subcritical water. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 80-86 (2013). https://doi.org/
Key words: supercritical fluids, pulse heating, heat transfer
A technique based on pulse heating of the wire probe (resistance thermometer) in the constant heating power mode is developed and applied for the studies of comparative heat transfer intensity in supercritical fluids (SCF) in the pressure and temperature ranges from 1рс to (4—6) рс and from 0,6Tс to 1,6Tс, respectively (рс and Tс — critical pressure and temperature). Characteristic parameters of the setup used are as follows: heating pulse length — 1—10 ms; density of the heat flux through the probe surface — 1—10 MW/m2; repeatability of the selected power value in a series of pulses — not worse than 0,1 %. A sharp decrease in the heat transfer intensity in SCF compared to that observed at subcritical temperatures is revealed.
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7.0.100-2018
Heat transfer under supercritical parameters of pulse heated liquid / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 1. – С. 87-97. - DOI:
TRANSLIT
Teploperenos pri sverhkriticheskih parametrah impul'sno nagrevaemoj zhidkosti / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 1. – S. 87-97. - DOI:
En
Heat transfer under supercritical parameters of pulse heated liquid. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 87-97 (2013). https://doi.org/
Key words: local molecular dynamics, FTIR spectroscopy, glassy polymers, relaxation transition, method of conformational probes, supercritical carbon dioxide
To study the local molecular mobility of polysulphone and polycarbonate processed in
supercritical carbon dioxide the FTIR-spectroscopic method of conformational probes
is applied. The temperatures and nature of secondary relaxation transitions are determined.
The effect of supercritical fluid processing on relaxation transitions in polymers and on
the difference in conformation enthalpies of probe molecules is analyzed.
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7.0.100-2018
Effect of supercritical carbon dioxide on secondary relaxation transitions in polysulphone and polycarbonate: method of conformational probes / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 4-10. - DOI:
TRANSLIT
Vliyanie sverhkriticheskogo dioksida ugleroda na vtorichnye relaksacionnye perekhody v polisul'fone i polikarbonate: metod konformacionnyh zondov / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 4-10. - DOI:
En
Effect of supercritical carbon dioxide on secondary relaxation transitions in polysulphone and polycarbonate: method of conformational probes. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 4-10 (2013). https://doi.org/
Key words: critical parameters, supercritical mixtures, concentration, equation of state, compressibility factor, reduced parameters, relative error
The p, ρ, T, x-relationshi ps for water + aliphatic alcohol (methanol, ethanol, n-propanol) mixtures in near-critical and supercritical conditions obtained by compressibility measurements using the piezometric setup are analyzed. It is demonstrated that thermodynamic surface (p, ρ,T)x or (Z, ρ,T)x in supercritical region can be satisfactory described (average relative error 0.83 %) by the equation of state in the form of polynomial decomposition of compressibility factor Z = p/RT to the series of degrees of density and temperature:
\(Z=1+\sum_{i=1}^{m}\sum_{j=0}^{n_i}a_{ij}\omega^i/\tau^j\), where
\(\omega=\rho_m/\rho_{m_{cr}}, \tau=T/T_{cr}\)
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p, ρ, T, x-dependences for supercritical water—aliphatic alcohol mixtures / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 11-38. - DOI:
TRANSLIT
p, ρ, T, x-zavisimosti sverhkriticheskih vodnyh rastvorov alifaticheskih spirtov / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 11-38. - DOI:
En
p, ρ, T, x-dependences for supercritical water—aliphatic alcohol mixtures. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 11-38 (2013). https://doi.org/
Key words: supercritical fluids, oil cracking, aqueous-hydrocarbon fluids, growth of quartz crystals, synthetic inclusions, oil, hydrocarbon gases, solid bitumen, thermobarogeochemistry of fluid inclusions
An experimental research was conducted to study the features of the hydrocarbons
behaviour and their phase states at temperatures from 220 up to 500 °C and saturated
vapour pressure and above (up to 150 MPa). The study was realized using the synthetic
fluid inclusions in the quartz crystals which had been grown simultaneously with the
interaction between the water solutions and crude oil. It was shown that the aqueoushydrocarbonic
fluids generated at temperatures below 320 °C (approximate pressure of
30—50 MPa), depending on the thermobaric parameters and ratio of the water solution
(L1), oil (L2) and the gas phase (G) (presented by water vapour), could exist as the
three-phase (from L1>G≥L2 up to L2≥L1>G) and two-phase (from L1≥L2 up to
L2≥L1) states. The cracking of oil in such aqueous-oil fluids is not observed. The
fluids formed at temperatures above 330 °C (and especially at 380—450 °C) have higher
amount of light oil fractions, gaseous hydrocarbons and residual solid bitumen. This
means that the hydrocarbons in the hydrothermal systems are exposed to the cracking
at the specified temperatures. Reheating of such multi phase inclusions to temperatures
240—280 °C leads to the complete dissolution of the liquid hydrocarbons in the gaseous
and aqueous phases. Therefore, the fluid becomes bi phasic (water solution + gaseous
hydrocarbons saturated by liquid hydrocarbons). The consecutive increase of
temperature from 350 up to 380 °C transfers the fluid in homogeneous liquid or gaseous
state, or in supercritical state. Fluid cooling results in its heterogenization, and all
intermediate phases are consecutively restored. As a whole, the experimental studies
confirm influence of the hydrocarbons cracking on the occurrence in the earth interior
of the vertical zonal distribution of various types of the oil-and-gas deposits.
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7.0.100-2018
On the causes of vertical zoning in hydrocarbon distribution in earth interior: experimental evidences of crude oil cracking in high-temperature aqueous-hydrocarbon fluids / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 39-60. - DOI:
TRANSLIT
O prichinah vertikal'noj zonal'nosti raspredeleniya uglevodorodov v nedrah zemli: eksperimental'nye dokazatel'stva krekinga syroj nefti v vysokotemperaturnyh vodno-uglevodorodnyh flyuidah / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 39-60. - DOI:
En
On the causes of vertical zoning in hydrocarbon distribution in earth interior: experimental evidences of crude oil cracking in high-temperature aqueous-hydrocarbon fluids. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 39-60 (2013). https://doi.org/
Key words: supercritical fluid extraction, liquid and supercritical carbon dioxide, spent nuclear fuel reprocessing, complexation, tributyl phosphate, aqueous Fe(III) nitrate solutions
Solubility of UO2(NO3)2-tributyl phosphate (TBP) complex in liquid and supercritical
(SC) carbon dioxide as a function of temperature and pressure is measured. This
complex is formed during the dissolution of uranium oxide in two-phase system consisting
of aqueous iron nitrate solution and liquid or supercritical CO2 saturated with
TBP. Kinetics of ceramic UO2 dissolution in such two-phase solvent is studied. The
feasibility of the recovery of uranium from spent oxide nuclear fuels via its dissolution
in sub-acid iron nitrate aqueous solutions accompanied by simultaneous extraction of
the above mentioned complex into «TBP — SC-CO2» phase is demonstrated.
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7.0.100-2018
Dissolution of oxide nuclear fuel in sub-acid ferric nitrate solutions and extraction of uranium from it using tributyl phosphate-containing supercritical carbon dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 61-67. - DOI:
TRANSLIT
Rastvorenie oksidnogo yadernogo topliva v slabokislyh rastvorah nitrata zheleza(III) i izvlechenie iz nego urana s pomoshch'yu sverhkriticheskogo dioksida ugleroda, soderzhashchego tributilfosfat / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 61-67. - DOI:
En
Dissolution of oxide nuclear fuel in sub-acid ferric nitrate solutions and extraction of uranium from it using tributyl phosphate-containing supercritical carbon dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 61-67 (2013). https://doi.org/
Key words: supercritical carbon dioxide, extraction, solubility, water droplets, diffraction pattern, diameter of the water droplets
The formation of water droplets of micron size in supercritical carbon dioxide (SC-CO2)
in high-pressure cell with sapphire windows is studied experimentally using in
situ laser diffractometry. According to the analysis of diffraction patterns of laser
radiation scattered on water droplets in SC-CO2 and optical microscopy data at 10.0 MPa
and 40 °C, the mean diameter of water droplets is 55±3 mm.
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7.0.100-2018
Experimental study of water (micro) droplets formation from its saturated solution in supercritical carbon dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 68-76. - DOI:
TRANSLIT
Eksperimental'noe issledovanie obrazovaniya (mikro)kapel' iz rastvora vody v sverhkriticheskom diokside ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 68-76. - DOI:
En
Experimental study of water (micro) droplets formation from its saturated solution in supercritical carbon dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 68-76 (2013). https://doi.org/
Key words: aqueous solutions of NaF and Li2CO3, salt solubility and critical phenomena in binary and ternary systems
Experimental studies of binary and ternary water-salt systems containing NaF or
Li2CO3 demonstrate that these salts belong to the type 2, which is characterized by
negative temperature coefficient of salt solubility in water, by critical phenomena in
salt-saturated aqueous solutions and by a wide region of fluid equilibria where
homogeneous supercritical fluid solutions are stable at any pressure variation. However,
the behavior of these two salts of type 2 differs from that of alkali metals sulfates and
carbonates, which is complicated by immiscibility phenomena in stable and metastable
states. It is shown that the immiscibility phenomena in hydrothermal binary systems
with NaF and Li2CO3 are absent and the second critical end-point Q in solid saturated
solutions appears at very high temperature and pressure (above 500 °C and 150 MPa).
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7.0.100-2018
Solubility of NaF and Li2CO3 (salts of type 2) in supercritical water and aqueous electrolyte (NaCl, Na2WO4, Li2SO4) solutions / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 77-83. - DOI:
TRANSLIT
Rastvorimost' solej 2-go tipa NaF i Li2CO3 v vode i vodnyh rastvorah elektrolitov (NaCl, Na2WO4, Li2SO4) pri sverhkriticheskih parametrah / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 77-83. - DOI:
En
Solubility of NaF and Li2CO3 (salts of type 2) in supercritical water and aqueous electrolyte (NaCl, Na2WO4, Li2SO4) solutions. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 77-83 (2013). https://doi.org/
Key words: supercritical carbon dioxide, polylactide, atomic force microscopy of polymers
Microstructure and properties of amorphous D,L-polylactide processed different routes
in supercritical carbon dioxide (SC-CO2) are studied. Atomic force microscopy analysis
demonstrated polymer plasticization that follows its swelling in SC-CO2 and leads to
significant internal structure changes caused by polylactic acid supramolecular
transformations. A developed pore structure formation and an accompanying increase
of polylactide void volume are directly related to a destruction of initial intermolecular
polymer bonds during the release of carbon dioxide. These changes are reflected in
significant (1.7—5-fold) increase of exothermal effects detected by differential scanning
calorimetry in the temperature ranges between -30 °C and -10 °C and around 30—40 °C.
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7.0.100-2018
Morphological changes of polylactic acid microstructure processed with supercritical carbon dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 84-93. - DOI:
TRANSLIT
Morfologicheskie izmeneniya mikrostruktury polimolochnoj kisloty pod dejstviem sverhkriticheskogo dioksida ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 84-93. - DOI:
En
Morphological changes of polylactic acid microstructure processed with supercritical carbon dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 84-93 (2013). https://doi.org/
Key words: supercritical conditions, density, fiber-optic densitometer, isobutane, butenes, alkylation
The applicability of a fiber-optic densitometer for monitoring of the reaction mixture density in the course of heterogeneous catalytic reactions is demonstrated on an example of isobutane alkylation with butene in supercritical conditions at 150 °C and 80 atm. Density measurements are carried out in two points — before and after the fixed bed of the H-USY zeolite catalyst. Temperature and pressure dependencies of density and refraction index of butene-isobutane mixture are revealed.
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7.0.100-2018
Monitoring of Reaction Medium Density in the Course of Catalytic Reactions in Supercritical Conditions Using Fiber-Optic Densitometer / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 3. – С. 4-11. - DOI:
TRANSLIT
Monitoring plotnosti reakcionnoj sredy pri provedenii kataliticheskih reakcij v sverhkriticheskih usloviyah s ispol'zovaniem volokonnoopticheskogo densitometra / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 3. – S. 4-11. - DOI:
En
Monitoring of Reaction Medium Density in the Course of Catalytic Reactions in Supercritical Conditions Using Fiber-Optic Densitometer. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 4-11 (2013). https://doi.org/
Key words: ionic phosphite, hydroformylation, supercritical carbon dioxide, ionic liquids, rhodium
A new method for the preparation of ionic phosphite ligands is developed. The first example of the use of this type of ligands in the hydroformylation catalyzed by rhodium complexes in organic solvents, ionic liquid and supercritical carbone dioxide is described. It is shown that the hydroformylation reaction in biphasic mixtures «ionic liquid/supercritical carbon dioxide» leads to a higher activity of the catalyst.
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7.0.100-2018
The Use of a New Ionic Phosphite-Type Ligand in the Hydroformylation Catalyzed by Rhodium Complexes: Effect of Reaction Media / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 3. – С. 12-18. - DOI:
TRANSLIT
Primenenie novogo ionnogo fosfitnogo liganda v kataliziruemom kompleksami rodiya gidroformilirovanii alkenov: effekt reakcionnyh sred / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 3. – S. 12-18. - DOI:
En
The Use of a New Ionic Phosphite-Type Ligand in the Hydroformylation Catalyzed by Rhodium Complexes: Effect of Reaction Media. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 12-18 (2013). https://doi.org/
Key words: acizol, supercritical carbon dioxide, FTIR spectroscopy
Dissolution of the pharmaceutical substance Acizol® — bis(1-vinylimidazole-N) zinc diacetate — in supercritical carbon dioxide (SC-CO2) is studied using the FTIR spectroscopy. Via the analysis of temporal dependences of integral intensities of IR absorption analytical band (1650 сm-1) at varied acizol shot its molar fraction in saturated solution in carbon dioxide at 40 °C and 10,0 MPa is evaluated as (4,9 ± 1,3) • 10-3.
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Solubility of Acizol in Supercritical Carbon Dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 3. – С. 19-24. - DOI:
TRANSLIT
Rastvorimost' acizola v sverhkriticheskom diokside ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 3. – S. 19-24. - DOI:
En
Solubility of Acizol in Supercritical Carbon Dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 19-24 (2013). https://doi.org/
Key words: supercritical drying, autoclave, aerogel, mesoporous silica glass, optical quartz glass, synthetic opal
The supercritical drying technology applied in the synthesis of materials based on pure silica, such as aerogel, mesoporous silica glass, optical quartz glass, and noble opal is described. The parameters of supercritical drying for the case of silica material synthesis in ethanol and methanol are optimized.
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The Application of Supercritical Drying in the Synthesis of Silica-Based Materials / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 3. – С. 25-35. - DOI:
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Primenenie metoda sverhkriticheskoj sushki v sinteze materialov iz dioksida kremniya / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 3. – S. 25-35. - DOI:
En
The Application of Supercritical Drying in the Synthesis of Silica-Based Materials. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 25-35 (2013). https://doi.org/
Key words: supercritical fluids, carotenoids, extraction, carrot, process parameters
The effect of process parameters on the efficiency of carotenes extraction from carrot samples by supercritical CO2 is studied. The degree of carotenes extraction increases to approximately 35 % at rising temperature (in the range between 60 and 80 °C) and pressure (up to 350 atm) at nearly stable fraction of β-carotene (64—70 %) in the obtained extracts.
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7.0.100-2018
Supercritical Fluid Extraction of Carotenoids from Shantane Carrot / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 3. – С. 36-41. - DOI:
TRANSLIT
Sverhkriticheskaya flyuidnaya ekstrakciya karotinoidov morkovi SHantane / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 3. – S. 36-41. - DOI:
En
Supercritical Fluid Extraction of Carotenoids from Shantane Carrot. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 36-41 (2013). https://doi.org/