Preparation of low-metal hydrotreating catalyst using PASCA to modify interaction between metal and its support

摘要：

On the surface of hydrotreating catalysts, there exists interaction between the metal and the surface sites of the support (MSI), resulting in the change of electron density (Ne) around the metal atom, and hence changing the reductibility and catalytic activities of the metal. o-Ps may chemically react with the metal sites of hydrotreating catalyst, and reduce its lifetime,τ or reaction rate, λ (λ=1/ τ). It has been known that λ is associated with the electron density (Ne) around the metal atom, and related to the change of MSI. Based on o-Ps as chemical probe atom, PASCA is possible to be used as a technique to modify the catalytic activities of hydrotreating catalyst.

作者: Xu Youming Luo Xihui

作者单位: Fushun Research Institute of Petroleum and Petrochemicals,SINOPEC Fushun,Liaoning 113001,P.R.China

会议类型: 国际会议

会议名称: 第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)

会议地点: 武汉

会议语种:英文

页码: 115

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）