Tuning the acidity and pore structures of NiP based bifunctional catalyst for efficient n-hexane isomerization

被引：9

作者：

Wu, Xinru ^{[1
]}

Lei, Xueqin ^{[1
]}

Wang, Shidong ^{[1
]}

Zhang, Hongwei ^{[1
]}

Cui, Qingyan ^{[1
]}

Bao, Xiaojun ^{[1
,2
]}

Wang, Tinghai ^{[1
,2
]}

Yuan, Pei ^{[1
]}

机构：

[1] Fuzhou Univ, Sch Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China

[2] Qingyuan Innovat Lab, Quanzhou 362801, Peoples R China

来源：

FUEL | 2022年 / 324卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Amorphous NiP; Modified Kaolin; Ball-milling; Isomerization; HYDROISOMERIZATION; PERFORMANCE; PLATINUM; HEPTANE; NICKEL; MORDENITE; ZEOLITES; ALUMINA; SITES; METAL;

D O I：

10.1016/j.fuel.2022.124396

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：

Isomerization of alkane is one of the most important catalytic processes for producing environmentally friendly gasoline fraction with high octane number. However, the development of non-noble metal based catalysts with high conversion and selectivity towards multi-branched isomerized products is still challenging. Herein, we report that a NiP-H beta/modified Kaolin catalyst was successfully prepared by ball-milling of amorphous NiP nanoparticles with H beta/modified Kaolin composites and applied for n-hexane isomerization. The introduction of chemically modified Kaolin with abundant weak-medium acid sites and mesopores not only alleviates the cracking of isomerized products on the strong acid sites on H beta, but also provides more active sites for the formation of di-branched isomerized products with high octane number. As a result, the NiP-H beta/modified Kaolin catalyst shows an excellent catalytic performance for n-hexane isomerization in terms of good conversion (78.1%), high selectivity towards mono-branched (75.4%) and di-branched (21.4%) i-C-6 products, and high liquid yield (99.9%). This work paves the way to the development of high performance non-noble metal based catalysts for large scale production of clean gasoline.

引用

页数：8

共 38 条

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