TY - JOUR
T1 - Evaluation of strong acid properties of layered HNbMoO6 and catalytic activity for Friedel-Crafts alkylation
AU - Tagusagawa, Caio
AU - Takagaki, Atsushi
AU - Hayashi, Shigenobu
AU - Domen, Kazunari
N1 - Funding Information:
This work was supported by the Development in a New Interdisciplinary Field Based on Nanotechnology and Materials Science Program of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan and the Global Center of Excellence Program for Chemistry.
PY - 2009/4/30
Y1 - 2009/4/30
N2 - The acid properties and catalytic activity of layered HNbMoO6 for liquid-phase Friedel-Crafts alkylation are examined. 31P MAS NMR spectroscopy using trimethylphosphine oxide as a probe molecule reveals that HNbMoO6 possesses strong acid sites in the interlayer region. Layered HNbMoO6 is demonstrated to display remarkable catalytic performance for this reaction, substantially exceeding the activities of niobic acid, niobium-molybdenum mixed oxide, ion-exchange resins, and zeolites. It is determined that benzyl alcohol is intercalated into the HNbMoO6 interlayer during alkylation to form a monolayer configuration, allowing the strong interlayer acid sites to participate in the reaction.
AB - The acid properties and catalytic activity of layered HNbMoO6 for liquid-phase Friedel-Crafts alkylation are examined. 31P MAS NMR spectroscopy using trimethylphosphine oxide as a probe molecule reveals that HNbMoO6 possesses strong acid sites in the interlayer region. Layered HNbMoO6 is demonstrated to display remarkable catalytic performance for this reaction, substantially exceeding the activities of niobic acid, niobium-molybdenum mixed oxide, ion-exchange resins, and zeolites. It is determined that benzyl alcohol is intercalated into the HNbMoO6 interlayer during alkylation to form a monolayer configuration, allowing the strong interlayer acid sites to participate in the reaction.
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U2 - 10.1016/j.cattod.2008.10.045
DO - 10.1016/j.cattod.2008.10.045
M3 - Article
AN - SCOPUS:63349090717
SN - 0920-5861
VL - 142
SP - 267
EP - 271
JO - Catalysis Today
JF - Catalysis Today
IS - 3-4
ER -