Premium
Preparation of Mesoporous Silica and Carbon Materials with Multilength‐Scale Pores and Hydrogen Sorption Application
Author(s) -
Kwon TaeHwan,
Jung Suhyun,
Kim HeeJin,
Park Seongsoon,
Kim SungJin,
Huh Seong
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900153
Subject(s) - mesoporous material , chemistry , sorption , chemical engineering , carbon fibers , catalysis , hydrogen , mesoporous organosilica , cationic polymerization , porosity , mesoporous silica , template , hydroxide , inorganic chemistry , nanotechnology , organic chemistry , materials science , adsorption , composite material , composite number , engineering
A facile method was developed for the preparation of bimodal mesoporous siliceous materials with nanostructured pores in which a cationic organic template, n ‐hexadecyltrimethylammonium hydroxide, was employed as a base catalyst as well as a mesopore structure‐directing agent during the slow condensation of tetraethoxysilane. It was possible to alter the pore orientations of smaller pores by adding neutral auxiliary templates such as Brij76 and P123. A series of biomodal mesoporous carbons was also obtained from the bimodal mesoporous silica materials through a nanocasting process. The resulting bimodal mesoporous carbons exhibited decent hydrogen uptake values at 77 K. The maximum hydrogen uptake was 1.33 wt.‐% for the sample having the narrowest pores, while keeping a relatively large pore volume. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)