Effect of metal-acid synergistic effect of modified HZSM-5 zeolites on the catalytic upgrading of gaseous tar to produce light aromatics

被引：6

作者：

Li, Xilong ^{[1
,2
]}

Yan, Lunjing ^{[1
,2
]}

Men, Xiaoyong ^{[3
]}

Wang, Meijun ^{[1
,2
]}

Kong, Jiao ^{[1
,2
]}

Lv, Peng ^{[4
]}

Bai, Yonghui ^{[4
]}

Chang, Liping ^{[1
,2
]}

Bao, Weiren ^{[1
,2
]}

机构：

[1] Taiyuan Univ Technol, Coll Chem Engn & Technol, State Key Lab Clean & Efficient Coal Utilizat, Taiyuan 030024, Shanxi, Peoples R China

[2] Taiyuan Univ Technol, Minist Educ, Key Lab Coal Sci & Technol, Taiyuan 030024, Shanxi, Peoples R China

[3] CHN Energy Ningxia Coal Ind Co Ltd, Yinchuan 750000, Peoples R China

[4] Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Utilizat Coal & Gree, Yinchuan 750021, Peoples R China

来源：

JOURNAL OF THE ENERGY INSTITUTE | 2024年 / 113卷

基金：

中国国家自然科学基金;

关键词：

Si/Al ratios; HZSM-5; zeolites; Catalytic upgrading; Synergistic effect; BTEXN; COAL PYROLYSIS TAR; LOW-RANK COAL; LIGNITE; VAPORS; ENHANCEMENT; TEMPERATURE; PERFORMANCE; BENZENE; NICKEL;

D O I：

10.1016/j.joei.2024.101539

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：

This study focuses on the synergistic effect of metal and acid on the catalytic upgrading of gaseous tar from coal pyrolysis was studied by loading metals with HZSM-5 zeolites with different Si/Al ratios. The results show that the metal-loaded HZSM-5 zeolite can significantly promote the removal of phenolic hydroxyl and aromatization of aliphatic hydrocarbons, and obtain more BTEXN. In addition, HZSM-5 zeolite with Si/Al ratio of 25 was selected to study the ratio of metal acids in the in -situ catalytic upgrading of tar. The metal-supported acidity of the catalyst increased at first and then decreased with the increase of metal loading. According to the synergistic effect of metal and acid of 5Ni/Z-25, the yield of BTEXN is the highest and the selectivity of benzene and toluene is good. However, by adjusting the metal ratio, the obtained xNi/Z-25 also has a good selectivity for substances such as p-xylene while ensuring the higher yield of BTEXN.

引用

页数：9

共 40 条

[1] Pyrolysis of low rank coal by nickel based zeolite catalysts in the two-staged bed reactor [J].