Preparation of ZSM-5 Encapsulated Pt-La Bimetallic Catalysts and Their Catalytic Performance for iso-Butane Cracking

被引：1
|
作者：
Hu, Wenxin [1 ]
Zhao, Ying [1 ]
Du, Danyang [1 ]
Zhang, Hongdan [1 ]
Cheng, Peng [1 ]
机构：
[1] Shenyang Normal Univ, Inst Catalysis Energy & Environm, Coll Chem & Chem Engn, Shenyang 110034, Peoples R China
来源：
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2024年 / 45卷 / 10期
基金：
中国国家自然科学基金;
关键词：
ZSM-5; Hydrothermal synthesis; Encapsulation; Metal nanoparticles; Catalytic cracking; LIGHT OLEFINS; RARE-EARTH; HIERARCHICAL ZSM-5; ZEOLITES; HZSM-5; NAPHTHA; PROPYLENE; PYROLYSIS; STRENGTH; ACIDITY;
D O I：
10.7503/cjcu20240244
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Pt-xLa@HZSM-5 catalysts(x represents the molar ration of La to Pt, x=0.1, 0.25, 0.5 and 1.0 in the reaction system) were synthesized via one-pot hydrothermal method. The structure, morphology, acidity and metal species state of catalysts were investigated by X-ray diffraction, scanning and transmission electron microscopy, temperature-programmed desorption of ammonia, pyridine-adsorption infrared spectroscopy, and X-ray photoelectron spectroscopy. According to the results of activity test, Pt-0.25La@HZSM-5 had the best catalytic performance for iso-butane cracking, with a yield of 51.1% for ethylene and propylene at 625 degrees C. However, under the same reaction conditions, the yield of ethylene and propylene was only 41.4% on Pt@HZSM-5-0.25La catalyst synthesized by impregnation method for the iso-butane catalytic cracking.
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页数：8
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