Enhanced catalytic cracking of n-hexane cracking to olefin via rational design of tandem vanadium oxide-based catalyst on ZSM-5

被引：0

作者：

Gursida, Ariel Hazril ^{[1
]}

Gambo, Yahya ^{[2
]}

Razzak, Shaikh Abdur ^{[1
,2
]}

Hossain, Mohammad Mozahar ^{[1
,2
]}

机构：

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

[2] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Refining & Adv Chem IRC, Dhahran, Saudi Arabia

来源：

APPLIED CATALYSIS A-GENERAL | 2025年 / 694卷

关键词：

Catalytic cracking; Naphtha; Olefin; Tandem catalyst; ZSM-5; Vanadium; OXIDATIVE DEHYDROGENATION; SELECTIVE OXIDATION; EFFICIENT CATALYSTS; REDUCTION KINETICS; LIGHT OLEFIN; ACID SITES; PERFORMANCE; ZEOLITE; ETHANE; HZSM-5;

D O I：

10.1016/j.apcata.2025.120149

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Catalytic cracking of naphtha to produce olefins using ZSM-5 can fulfill the growing demand for light olefins and the energy problem. In the current work, vanadium oxide in different supports was mixed with ZSM-5 as a tandem catalyst for oxidative cracking of n-hexane to light olefins. The results showed that adding vanadium as a tandem catalyst with ZSM-5 increased n-hexane conversion to 68.8 % for VOx/Al2O3 and 86.7 % for VOx/SiO2 addition. Selectivity to light olefin was significantly changed due to the oxidative dehydrogenation reaction in the vanadium active site. The position and proximity of the metal oxide and acid sites determine the reaction pathway and product distribution. A stability test showed that the conversion of n-hexane decreased from 58 % to 37 %. Still, the selectivity to olefin was stable at 60 % due to the carbon formation blocking the acid site, not the metal oxide sites.

引用

页数：12