Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (10): 20240244.doi: 10.7503/cjcu20240244

• Article: Inorganic Chemistry • Previous Articles     Next Articles

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

HU Wenxin, ZHAO Ying, DU Danyang, ZHANG Hongdan(), CHENG Peng()   

  1. Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China
  • Received:2024-05-17 Online:2024-10-10 Published:2024-07-05
  • Contact: CHENG Peng E-mail:zhanghd11@163.com;chengp1987@126.com
  • Supported by:
    the National Natural Science Foundation of China(22172102);the Shenyang Young and Middle-aged Scientific and Technological Innovation Talents Support Plan, China(RC210044)

Abstract:

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 ℃. 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.

Key words: ZSM-5, Hydrothermal synthesis, Encapsulation, Metal nanoparticles, Catalytic cracking

CLC Number: 

TrendMD: