The role of acidity, side pocket, and steam on maximizing propylene yield from light naphtha cracking over one-dimensional zeolites: Case studies of EU-1 and disordered ZSM-48

被引：34

作者：

Ahmed, Mohamed H. M. ^{[1
,2
,4
,5
]}

Masuda, Takao ^{[3
]}

Muraza, Oki ^{[1
,2
]}

机构：

[1] King Fahd Univ Petr & Minerals, Ctr Res Excellence Nanotechnol, Dhahran 31261, Saudi Arabia

[2] King Fahd Univ Petr & Minerals, Chem Engn Dept, Dhahran 31261, Saudi Arabia

[3] Hokkaido Univ, Fac Engn, Div Chem Proc Engn, Kita Ku, N13-W8, Sapporo, Hokkaido 0608628, Japan

[4] Univ Queensland, Nanomat Ctr, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

[5] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

来源：

FUEL | 2019年 / 258卷

关键词：

Naphtha cracking; One-dimensional zeolites; EU-1; ZSM-48; Steam cracking; CATALYTIC CRACKING; N-HEXANE; FRAMEWORK TOPOLOGY; DIMETHYL ETHER; HYDROISOMERIZATION;

D O I：

10.1016/j.fuel.2019.116034

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Catalytic cracking of light naphtha was carried out in a fixed bed reactor over ZSM-48 and EU-1 zeolites at different Si/Al ratios. The highest propylene yield achieved was similar to 39 wt% over EU-1 catalyst which has the lowest Si/Al ratio of 50. The side pocket of EU-1 catalyst exhibited important role in prolonging the lifetime and enhancing the propylene yield. The addition of 5% molar percent of water to the reaction caused considerable changes in the concentration of Bronsted and Lewis due to the dealumination observed. The presence of steam over ZSM-48 showed good enhancement in the catalyst lifetime and significant decrease in deactivation rate as compared to EU-1.

引用

页数：10

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