期刊
ACS CATALYSIS
卷 6, 期 6, 页码 3506-3514出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.6b00303
关键词
metal carbide; mesoporous; hydrodeoxygenation; biomass; vapor-phase reaction
资金
- University of Delaware Energy Institute Innovative Energy Research Grants Program (IERGP)
- Office of Basic Energy Sciences of the U.S. Department of Energy [DE-SC0008418]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1350911] Funding Source: National Science Foundation
- U.S. Department of Energy (DOE) [DE-SC0008418] Funding Source: U.S. Department of Energy (DOE)
Mesoporous metal carbides are of particular interest as catalysts for a variety of reactions because of their high surface areas, porous networks, nanosized walls, and unique electronic structures. Here, two ordered mesoporous metal carbides, Mo2C and W2C, were synthesized using a nanocasting approach coupled with a simultaneous decomposition/carburization process under a continuous methane flow. The as-synthesized mesoporous Mo2C and W2C have three dimensionally ordered porous structures, large surface areas (70-90 m(2) g(-1)), and crystalline walls. In vapor-phase anisole hydrodeoxygenation (HDO) reactions, they exhibited turnover frequencies of approximately 9 and 2 x 10(-4) mol molco(-1) s(-1), respectively, at relatively low reaction temperatures (423-443 K) and ambient hydrogen pressures. Notably, the ordered mesoporous W2C catalyst showed a greater than 96% benzene selectivity in anisole HDO, the highest benzene selectivity reported to date.
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