Intensification methods of supercritical drying for aerogels production

Abstract The features of the supercritical drying process are considered. The intensification methods of the supercritical drying for the production of aerogels were shown. The influence of the CO2 supply, process temperature and CO2 flowrate on the performance of supercritical drying was studied. The methods were proposed which permits to reduce the mass of used carbon dioxide in the one cycle of supercritical drying by 63.4%.

[1]  Pavel Tsygankov,et al.  Synthesis and Properties of Silica and Alginate Hybrid Aerogel Particles with Embedded Carbon Nanotubes (CNTs) for Selective Sorption , 2018, Materials.

[2]  N. Menshutina,et al.  Lab Scale High-Pressure Equipment for Supercritical Drying , 2018 .

[3]  I. Smirnova,et al.  First Evidence of Solvent Spillage under Subcritical Conditions in Aerogel Production , 2018, Industrial & Engineering Chemistry Research.

[4]  N. Menshutina,et al.  Production of Sodium Alginate-Based Aerogel Particles Using Supercritical Drying in Units with Different Volumes , 2017, Russian Journal of Physical Chemistry B.

[5]  I. Smirnova,et al.  Aerogels in Chemical Engineering: Strategies Toward Tailor-Made Aerogels. , 2017, Annual review of chemical and biomolecular engineering.

[6]  S. Will,et al.  Supercritical drying of aerogel: In situ analysis of concentration profiles inside the gel and derivation of the effective binary diffusion coefficient using Raman spectroscopy , 2016 .

[7]  C. Erkey,et al.  Monolithic composites of silica aerogel with poly(methyl vinyl ether) and the effect of polymer on supercritical drying , 2015 .

[8]  M. Hodes,et al.  Continuous extraction rate measurements during supercritical CO2 drying of silica alcogel , 2014 .

[9]  A. Roig,et al.  Design of biocompatible magnetic pectin aerogel monoliths and microspheres , 2012 .

[10]  Irina Smirnova,et al.  Supercritical drying of aerogels using CO2: Effect of extraction time on the end material textural properties , 2012 .

[11]  R. Smith,et al.  Green chemical processes with supercritical fluids: Properties, materials, separations and energy , 2011 .

[12]  Buxing Han,et al.  Supercritical fluids: Clean solvents for green chemistry , 2010 .

[13]  J. D. L. Fuente,et al.  Measurement and modeling of high-pressure (vapour + liquid) equilibria of (CO2 + alcohol) binary systems , 2010 .

[14]  A. Klamczynski,et al.  Encapsulation of plant oils in porous starch microspheres. , 2010, Journal of agricultural and food chemistry.

[15]  Mohammad Hasan Abbasi,et al.  Silica aerogel; synthesis, properties and characterization , 2008 .

[16]  G. Brunner Supercritical Fluids as Solvents and Reaction Media , 2004 .

[17]  Eric J. Beckman,et al.  Supercritical and near-critical CO2 in green chemical synthesis and processing , 2004 .

[18]  D. Geanǎ,et al.  High-Pressure Vapor−Liquid Equilibria in the System Carbon Dioxide and 2-Propanol at Temperatures from 293.25 K to 323.15 K , 2003 .

[19]  Yu.K. Akimov,et al.  Fields of Application of Aerogels (Review) , 2003 .

[20]  D. Lecomte,et al.  Drying of Silica Gels to Obtain Aerogels:Phenomenology and Basic Techniques , 2003 .

[21]  Ya‐Ping Sun Supercritical Fluid Technology in Materials Science and Engineering: Syntheses: Properties, and Applications , 2002 .

[22]  H. Tamon,et al.  PREPARATION OF ORGANIC MESOPOROUS GEL BY SUPERCRITICAL/FREEZE DRYING , 1999 .

[23]  F Franks,et al.  Freeze-drying of bioproducts: putting principles into practice. , 1998, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

[24]  Ž. Knez,et al.  Diffusion of methanol–liquid CO2 and methanol–supercritical CO2 in silica aerogels , 1997 .

[25]  K. Klabunde,et al.  Synthesis of high surface area zirconia aerogels using high temperature supercritical drying , 1997 .

[26]  Barbara L. Knutson,et al.  Supercritical fluids as solvents for chemical and materials processing , 1996, Nature.

[27]  C. Peters,et al.  Volume expansions and vapor-liquid equilibria of binary mixtures of a variety of polar solvents and certain near-critical solvents , 1995 .

[28]  J. Fricke,et al.  High‐temperature and low‐temperature supercritical drying of aerogels – structural investigations with SAXS , 1991 .

[29]  S. Kistler,et al.  Coherent Expanded Aerogels and Jellies. , 1931, Nature.

[30]  P. Wawrzyniak,et al.  Drying of Silica Alcogels by Liquid and Supercritical C02 , 1996 .

[31]  P. Debenedetti Supercritical fluids : fundamentals and applications , 1994 .

[32]  P. Anastas,et al.  Green Chemistry , 2018, Environmental Science.