Effect of nickel on phosphorus modified HZSM-5 in catalytic cracking of butene and pentene

被引：35

作者：

Li, Jian-Wen ^{[1
]}

Li, Tao ^{[1
]}

Ma, Hong-Fang ^{[1
]}

Sun, Qi-Wen ^{[2
]}

Ying, Wei-Yong ^{[1
]}

Fang, Ding-Ye ^{[1
]}

机构：

[1] East China Univ Sci & Technol, Engn Res Ctr Large Scale Reactor Engn & Technol, State Key Lab Chem Engn, Minist Educ, Shanghai 200237, Peoples R China

[2] State Key Lab Coal Liquefact & Coal Chem Technol, Shanghai 201203, Peoples R China

来源：

FUEL PROCESSING TECHNOLOGY | 2017年 / 159卷

关键词：

Butene; Pentene; Catalytic cracking; Modified HZSM-5; X-RAY PHOTOELECTRON; ZSM-5; ZEOLITE; LIGHT OLEFINS; PERFORMANCE; ALUMINA; STABILIZATION; PROPYLENE; PYROLYSIS; STABILITY; ADDITIVES;

D O I：

10.1016/j.fuproc.2016.06.034

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Nickel was introduced into phosphorus modified HZSM-5 (P/HZSM-5) with different loadings by an impregnating method. The effect of nickel loading on the structure and acidity of catalysts was investigated by XRD, N-2 adsorption, XPS, NMR, and FTIR of adsorbed pyridine. Nickel interacted with pre-introduced phosphorus, and the interaction promoted the migration of some phosphorus species from channels to external surface and broke part of the Al-O-P bonds. This increased the content of tetrahedral framework aluminum, and restored some Bronsted acid sites which were neutralized by phosphorus modification. In the cracking of butene and pentene, the performance of catalysts was strongly dependent on nickel content. For the cracking of butene, with increasing nickel content, butene conversion and ethylene selectivity increased, While propylene selectivity first increased, passed through a maximum and then decreased with further increment of nickel content; for the cracking of pentene, with increasing nickel content, pentene conversion, ethylene selectivity and propylene selectivity increased. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：31 / 37

页数：7