Bifunctional Nanostructured Base Catalysts [electronic resource] : Opportunities for BioFuels

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Ngôn ngữ: eng

Ký hiệu phân loại: 666.9 Masonry adhesives

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2010

Mô tả vật lý: Size: 18 mb : , digital, PDF file.

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ID: 265544

ABSTRACT This research studied and develop novel basic catalysts for production of renewable chemicals and fuels from biomass. We will focus on the development of unique porous structural-base catalysts formed by two techniques: from (mixed) metal-oxide bases and by nitrogen substitution for oxygen in zeolites. These catalysts will be compared to conventional solid base materials for aldol condensation, catalytic fast pyrolysis, and transesterification reactions. These reactions are important in processes that are currently being commercialized for production of fuels from biomass and will be pivotal in future biomass conversion to fuels and chemicals. Specifically, we have studied the aldol-condensation of acetone with furfural over oxides and zeolites, the conversion of sugars by rapid pyrolysis over zeolites and the trans-esterification of vegetable oil with methanol over mixed oxide catalysts. Our previous research has indicated that the base strength of framework nitrogen in nitrogen-substituted zeolites (NH-zeolites) is nearly twice as strong as in standard zeolites. Nitrogen substituted catalysts have been synthesized from several zeolites (including FAU, MFI, BEA, and LTL) using NH3 treatment.
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