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Title: Functionalized silica aerogels for gas-phase purification, sensing, and catalysis: A review

Abstract

Silica aerogels have a rich history and a unique, fascinating gas-phase chemistry that has lent them to many diverse applications. This review starts with a brief discussion of the fundamental issues driving the movement of gases in silica aerogels and then proceeds to provide an overview of the work that has been done with respect to the purification of gases, sensing of individual gases, and uses of silica aerogels as catalysts for gas-phase reactions. Salient features of the research behind these different applications are presented, and, where appropriate, critical aspects that affect the practical use of the aerogels are noted. Specific sections under the gas-purification category focus on the removal of airborne nanoparticles, carbon dioxide, volatile organic compounds, sulfur gases and radioactive iodine from gas streams. The use of silica aerogels as sensors for humidity, oxygen, hydrocarbons, volatile acids and bases, various non-ammoniacal nitrogen gases, and viral particles is discussed. With respect to catalysis, the demonstrated use of silica aerogels as supports for oxidation, Fischer-Tropsch, alkane isomerization, and hydrogenation reactions is reviewed, along with a section on untested catalytic formulations involving silica aerogels. A short section focuses on recent developments in thermomolecular Knudsen compressor pumps using silica aerogel membranes. Themore » review continues with an overview of the production methods, locations of manufacturing facilities globally, and a brief discussion of the economics before concluding with a few remarks about the present and future trends revealed by the work presented.« less

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1414518
Report Number(s):
PNNL-SA-123142
Journal ID: ISSN 1387-1811; AF5805020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Microporous and Mesoporous Materials
Additional Journal Information:
Journal Volume: 250; Journal Issue: C; Journal ID: ISSN 1387-1811
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
silica aerogel; gas-phase chemistry; gas purification; gas sensing; gas catalysis

Citation Formats

Amonette, James E., and Matyáš, Josef. Functionalized silica aerogels for gas-phase purification, sensing, and catalysis: A review. United States: N. p., 2017. Web. doi:10.1016/j.micromeso.2017.04.055.
Amonette, James E., & Matyáš, Josef. Functionalized silica aerogels for gas-phase purification, sensing, and catalysis: A review. United States. doi:10.1016/j.micromeso.2017.04.055.
Amonette, James E., and Matyáš, Josef. Fri . "Functionalized silica aerogels for gas-phase purification, sensing, and catalysis: A review". United States. doi:10.1016/j.micromeso.2017.04.055.
@article{osti_1414518,
title = {Functionalized silica aerogels for gas-phase purification, sensing, and catalysis: A review},
author = {Amonette, James E. and Matyáš, Josef},
abstractNote = {Silica aerogels have a rich history and a unique, fascinating gas-phase chemistry that has lent them to many diverse applications. This review starts with a brief discussion of the fundamental issues driving the movement of gases in silica aerogels and then proceeds to provide an overview of the work that has been done with respect to the purification of gases, sensing of individual gases, and uses of silica aerogels as catalysts for gas-phase reactions. Salient features of the research behind these different applications are presented, and, where appropriate, critical aspects that affect the practical use of the aerogels are noted. Specific sections under the gas-purification category focus on the removal of airborne nanoparticles, carbon dioxide, volatile organic compounds, sulfur gases and radioactive iodine from gas streams. The use of silica aerogels as sensors for humidity, oxygen, hydrocarbons, volatile acids and bases, various non-ammoniacal nitrogen gases, and viral particles is discussed. With respect to catalysis, the demonstrated use of silica aerogels as supports for oxidation, Fischer-Tropsch, alkane isomerization, and hydrogenation reactions is reviewed, along with a section on untested catalytic formulations involving silica aerogels. A short section focuses on recent developments in thermomolecular Knudsen compressor pumps using silica aerogel membranes. The review continues with an overview of the production methods, locations of manufacturing facilities globally, and a brief discussion of the economics before concluding with a few remarks about the present and future trends revealed by the work presented.},
doi = {10.1016/j.micromeso.2017.04.055},
journal = {Microporous and Mesoporous Materials},
issn = {1387-1811},
number = C,
volume = 250,
place = {United States},
year = {2017},
month = {9}
}

Works referencing / citing this record:

Silica aerogel-integrated nonwoven protective fabrics for chemical and thermal protection and thermophysiological wear comfort
journal, November 2019