Comparative study on the preparation of Co/HZSM-5 molecular sieves by ion exchange method and impregnation method

Rui Yu

doi:10.6180/jase.202012_23(4).0014

Comparative study on the preparation of Co/HZSM-5 molecular sieves by ion exchange method and impregnation method

Chemical Engineering

Rui Yu This email address is being protected from spambots. You need JavaScript enabled to view it.¹

¹Dongying Junyuan Petroleum Technology Development Company, Dongying 257300, China

Received: May 21, 2020
Accepted: July 22, 2020
Publication Date: December 1, 2020

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202012_23(4).0014

ABSTRACT

One of the key technologies to improve the catalytic cracking of alkanes is the development of high-efficiency catalyst. This research prepared Co/HZSM-5 zeolites with the same metal oxide loading by ion exchange method and impregnation method respectively, and evaluated the reaction of catalysts with the fixed bed micro-reactor. The experimental results show that the n-heptane conversion ability of the catalyst prepared by ion exchange method is better than the catalyst prepared by impregnation method, the former has higher conversion level and gas product yield. However, the catalyst prepared by impregnation method has high selectivity for propylene and butane. The impregnation sequence has a great impact on the distribution of products, and the composite modification has a higher conversion capacity than the single metal modification.

Keywords: Catalytic cracking; Ion exchange method; Impregnation method; Fixed bed micro-reactor; Conversion capacity

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