期刊
JOURNAL OF CATALYSIS
卷 267, 期 2, 页码 177-180出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2009.08.009
关键词
Solvent effect; In-situ NMR; Titanium molecular sieve; Styrene oxidation; Phenylacetaldehyde
资金
- National Natural Science Foundation
- Ministry of Science and Technology of the People's Republic of China
In-situ C-13 MAS NMR techniques were used to investigate the effects of different solvent systems on the formation of phenylacetalclehyde (PADH) over TS-1 zeolite, Protic solvents such as water and methanol provide acidic centers during the reaction. These acidic species catalyzed the transformation of the intermediates to PADH. Whereas in the presence of aprotic solvents such as acetone, the precursor of PADH remains stable on the framework of TS-1 and accordingly there is no PADH formation. (C) 2009 Elsevier Inc. All rights reserved.
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