Hydroisomerization of n-heptane over MoP/Hβ catalyst doped with metal additive

被引：25
|
作者：
Liu, Ping [1 ]
Wu, Meng-Yao [1 ]
Wang, Jun [2 ]
Zhang, Wei-Hong [1 ]
Li, Yong-Xin [1 ]
机构：
[1] Changzhou Univ, Inst Petrochem Technol, Jiangsu Key Lab Adv Catalyt Mat & Technol, Changzhou 213164, Jiangsu, Peoples R China
[2] Nanjing Univ Technol, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
来源：
FUEL PROCESSING TECHNOLOGY | 2015年 / 131卷
基金：
中国国家自然科学基金;
关键词：
Molybdenum phosphide; Hydroisomerization of n-heptane; Bifunctional catalysts; ISOMERIZATION; OCTANE; CRACKING; ZEOLITE; HYDRODESULFURIZATION; PHOSPHIDES; SITES; NI2P; MOO3;
D O I：
10.1016/j.fuproc.2014.11.034
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The bifunctional catalysts of molybdenum phosphide supported on H beta zeolite (MOP/H beta) were prepared using a co-impregnation-temperature-programmed reduction method, and catalytically tested in the hydroisomerization of n-heptane. The catalytic conversion and isomerization selectivity of MoP/H beta were revealed to be higher than those of the control tungsten phosphide sample WP/H beta and the HMCM22-supported counterpart MOP/HMCM22. Moreover, doping Cr, Ni, or Ce significantly improved the activity of MoP/H beta; meanwhile, the Cr-promoted catalyst also gave an enhanced selectivity to isomerization products. The catalysts were characterized by X-ray diffraction, Brunauer-Emmett-Teller analysis, temperature-programmed desorption of NH3, and temperature-programmed reduction of H-2. Accordingly, it is suggested that the promoting effect of the secondary metal additive is relative to the reduction of MOPOx species, as well as the pores and add sites of the beta zeolite. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：311 / 316
页数：6
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