Synthesis of ?-MoC_1-<i>x</i> Nanoparticles with a Surface-Modified SBA-15 Hard Template [electronic resource] : Determination of Structure-Function Relationships in Acetic Acid Deoxygenation

• 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 Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2016
• Mô tả vật lý: Size: p. 9026-9029 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 263449
• Chủ đề: 1. 09 biomass fuels; 2. 37 inorganic, organic, physical, and analytical chemistry; 3. Bifunctional catalysts; 4. Biomass conversion; 5. Hydrodeoxygenation

Tóm tắt

 Surface modification of mesoporous SBA-15 silica generated a hydrophobic environment for a molybdenum diamine (Mo-diamine) precursor solution, enabling direct growth of isolated 1.9 � 0.4 nm ?-MoC<
 sub>
 1-x<
 /sub>
  nanoparticles (NPs) inside the pores of the support. The resulting NP catalysts are bifunctional, and compared to bulk ?-MoC<
 sub>
 1-x<
 /sub>
  and ?-Mo<
 sub>
 2<
 /sub>
 C, the NPs exhibit a greater acid-site:H-site ratio and a fraction of stronger acid sites. The greater acid-site:H-site ratio results in higher decarbonylation (DCO) selectivity during acetic acid hydrodeoxygenation (HDO) reactions, and the stronger acid sites lead to higher activity and ketonization (KET) selectivity at high temperatures. Lastly, the hard-templating synthetic method could be a versatile route toward carbide NPs of varying size, composition, and phase, on a range of mesoporous oxide supports.