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Kwak, Ja Hun
Molecular Catalysis lab
Research Interests
  • Heterogeneous catalysis, molecular catalysis, ASlumima, zeolites

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Effects of Novel Supports on the Physical and Catalytic Properties of Tungstophosphoric Acid for Alcohol Dehydration Reactions

Cited 16 times inthomson ciCited 16 times inthomson ci
Title
Effects of Novel Supports on the Physical and Catalytic Properties of Tungstophosphoric Acid for Alcohol Dehydration Reactions
Other Titles
Effects of Novel Supports on the Physical and Catalytic Properties of Tungstophosphoric Acid for Alcohol Dehydration Reactions
Author
Herrera, Jose E.Kwak, JahunHu, Jian ZhiWang, YongPeden, Charles H. F.
Issue Date
2008-08
Publisher
SPRINGER/PLENUM PUBLISHERS
Citation
TOPICS IN CATALYSIS, v.49, no.3-4, pp.259 - 267
Abstract
The catalytic behavior of tungstophosphoric acid supported on modified mesoporous silica materials for the dehydration of 2-butanol and methanol was studied. Specifically, the supports evaluated here consisted of unmodified MCM-41 and SBA-15 mesoporous silicas, and these materials coated with sub-monolayer quantities of alumina, titania, and zirconia. UV-Vis DRS and (31)P-NMR spectroscopy showed that the tungstophosphoric acid species retained their chemical identity in the synthesized supported form, although the spectra were influenced by the specific support material used. In addition, their acidic properties were evaluated using temperature-programmed oxidation of isopropyl amine. The differences in reaction rates between the samples reflect both the diversity in the amount of Bronsted acidic sites available for catalysis and dissimilarities in coking resistance. These two characteristics depend, in turn, on the type of support modifier used to prepare the catalyst
URI
https://scholarworks.unist.ac.kr/handle/201301/12357
URL
http://link.springer.com/article/10.1007%2Fs11244-008-9081-4
DOI
10.1007/s11244-008-9081-4
ISSN
1022-5528
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