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Mesoporous Sulfonated Carbon Materials Prepared by Spray Pyrolysis
Author(s) -
Duyckaerts Nicolas,
Trotuş IoanTeodor,
Nese Valentina,
Swertz AnnChristin,
Auris Sebastian,
Wiggers Hartmut,
Schüth Ferdi
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500483
Subject(s) - mesoporous material , sulfuric acid , carbonization , hydrolysis , carbon fibers , chemistry , aqueous solution , pyrolysis , chemical engineering , bet theory , specific surface area , salt (chemistry) , inulin , dehydration , inorganic chemistry , organic chemistry , materials science , adsorption , catalysis , biochemistry , composite number , engineering , composite material
A one‐step approach was developed for the production of mesoporous sulfonated carbon materials by means of an aerosol synthesis. Nebulizing a clear aqueous solution of sucrose and sulfuric acid through a heated oven leads to subsequent dehydration, carbonization and sulfonation of the carbohydrate structure, in less than two seconds residence time. Acid site concentrations ranging from 0.1 to 0.6 mmol g −1 can be obtained. Porosity can easily be introduced via salt templating, and can be adjusted by varying the loading and type of salt used. The highest surface area was obtained with Li 2 SO 4 , giving a BET surface area of 506 m 2 g −1 and a mesopore size distribution between 2 and 8 nm. Fructose dehydration and inulin hydrolysis showed that the porous materials synthesized by salt templating are more active than the bulk ones, especially for inulin hydrolysis, for which the initial activity is enhanced by a factor of seven, making these materials competitive with the most active commercial resins.