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ID 29239
本文ファイル
著者
Sumiya, Sadanobu
Kubota, Yuka
Oumi, Yasunori
キーワード
Carboxylic acid
Degradation
Surfactant
SBA-15
MCM-41
Sucrose hydrolysis
NDC
化学
抄録(英)
The calcination and thermal degradation behaviors of surfactants in mesoporous silicas SBA-15 and MCM-41 were investigated by FT-IR, C-13 CP/MAS NMR, TG/DTA, and GPC. It was found that carboxylic acid-containing products were generated as active components in the mesopores of SBA-15 and MCM-41 from the triblock copolymer (PEO)(20)(PPO)(70)(PEO)(20) and cetyltrimethylammonium bromide (CTAB), respectively; the latter materials were used as templates. The carboxylic acid-containing mesoporous silica obtained showed a catalytic activity for hydrolysis of sucrose. The acidity was evaluated by means of NaOH titration. The acidity sensitively depended on both the calcination temperature and the atmosphere; the maximum appeared at 150 degrees C in air for SBA-15 where the highest activity was observed. However, the product in MCM-41 showed a lower catalytic activity than that in SBA-15. The SBA-15 product was easily leached from the mesopores of SBA-15 into the solution, but the degree of leaching for MCM-41 was considerably smaller than that for SBA-15.
掲載誌名
Applied Catalysis A: general
372巻
1号
開始ページ
82
終了ページ
89
出版年月日
2010-01-015
出版者
Elsevier Science BV
ISSN
0926-860X
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2009 Elsevier B.V. All rights reserved.
関連情報URL
部局名
工学研究科