Work

Catalytic Dehydrogenative Cracking of C4 Hydrocarbons on a Bifunctional Metal–Acid Catalyst

Year: 2025

Type: article

Abstract: As key intermediate products in petroleum and chemical units, C4 hydrocarbons can be converted to ethene and propylene. While C4 olefins can be cracked into ethene and propylene on acid catalysts, such reactions with C4 paraffins are difficult under these conditions. In this study, a bifunctional metal–acid catalyst, BDHC, was prepared for catalytic dehydrogenation and catalytic cracking, using ZSM-5 zeolite for cracking active groups and Fe2O3 and Cr2O3 for dehydrogenation active groups. In the catalyzed reaction, C4 paraffins are converted to C4 olefins, which are subsequently cracked into ethene and propylene. The BDHC catalyst’s high relative crystallinity and large specific surface area and pore volume promote adsorption of reactant molecules. Moreover, the appropriate acid content suppresses side pathways and produces more ethene and propylene. Under optimized conditions, the ethene yield was 11.20%, the propylene yield was 27.51%, and the sum of the ethene and propylene yields was 38.71%.

Source: Catalysts

DOI: 10.3390/catal15111011

Authors: Wenming Ma, Genquan Zhu, Qimin Yuan, Jun Yang

Institutions: Sinopec (China), Sinopec Research Institute of Petroleum Processing, Jiangsu University of Science and Technology

Language: English

Topic: Zeolite Catalysis and Synthesis

Subfield: Inorganic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,654

Funder: National Key Research and Development Program of China