RUI: Development of Metal Phosphide Hydrotreating Catalysts

西华盛顿大学化学系Mark E.Bussell博士由化学部无机化学、生物无机化学和有机金属化学项目支持，致力于开发金属磷化物加氢处理催化剂。采用程序升温还原法制备金属磷化物催化剂，即在流动的氢气中还原氧化物前体，得到分散在高比表面积上的金属磷化物颗粒、金属氧化物载体。将精心选择一组二元和三元金属磷化物，并研究它们作为加氢脱硫(HDS)或加氢脱氮(HDN)催化剂的能力。将通过改变二元磷化物中金属与磷的比例来探讨磷化物组成的作用，并将评估三元磷化物中第二金属的影响。第二个目标是在一系列二元金属氧化物、混合金属氧化物和含磷载体上负载高活性金属磷化物。这些载体材料之所以被选中，是因为它们的酸性，这将为磷化物催化剂引入双功能。本研究的成果将是高活性金属磷化物加氢精制催化剂的开发和详细评价。此外，还将了解磷化物组成和氧化物载体对这些材料的催化性能的作用。加氢脱硫催化是石油工业中的一个关键过程，它可以选择性地从原油中发现的有机硫化合物中脱除硫。这项研究的目标是开发一种新型的基于过渡金属磷化物的加氢处理催化剂。本科生和硕士研究生将全面参与研究项目的各个方面。

Dr. Mark E. Bussell, Chemistry Department, Western Washington University, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for the development of metal phosphide hydrotreating catalysts. Metal phosphide catalysts will be prepared using the temperature-programmed reduction method, in which oxidic precursors are reduced in flowing hydrogen to give metal phosphide particles dispersed on high surface area, metal oxide supports. A carefully selected group of binary and ternary metal phosphides will be prepared and their ability to serve as hydrodesulfurization (HDS) or hydrodenitrification (HDN) catalysts will be investigated. The role of phosphide composition will be probed by varying the metal-to-phosphorus ratio in binary phosphides and the effect of a second metal in ternary phosphides will be assessed. A second goal will be to support highly active metal phosphides on a range of binary metal oxides, mixed metal oxides, and phosphate containing supports. These support materials have been selected because of their acidity, which will introduce bifunctionality into the phosphide catalysts. The outcome of this research will be the development and detailed evaluation of highly active metal phosphide hydrotreating catalysts. Additionally, an understanding will be developed of the roles of the phosphide composition and oxide support on the catalytic properties of these materials. Hydrodesulfurization catalysis is a critical process in the petroleum industry, selectively removing sulfur from organosulfur compounds found in crude oil. The goal of the research described in this proposal is the development of a new class of hydrotreating catalysts based on transition metal phosphides. Undergraduate and M.S. level students will be fully involved in all aspects of the research project.