Inter-conversion of light olefins on ZSM-5 in catalytic naphtha cracking condition

CATEGORY: ZEOLITES 
Inter-conversion of light olefins on ZSM-5 in catalytic naphtha cracking condition

Type	Journal Article
Author	Dan Liu
Author	Won Choon Choi
URL	http://www.sciencedirect.com/science/article/pii/S092058611300477X
Series	Acid-Base Catalysis Advanced Sciences and Spreading Applications to Solutions of Environmental, Resources and Energy Issues: ABC-7, 7th International Symposium on Acid-Base Catalysis, Tokyo, May 12-15, 2013
Volume	226
Pages	52-66
Publication	Catalysis Today
Date	May 1, 2014
Abstract	Authors describe a study of the inter-conversion of light olefins over four different HZSM-5 based catalysts under cracking conditions. Results revealed that, regardless of the type of catalyst, the same behaviors of light olefin inter-conversion occurred, depending only on conversion of light olefins. Furthermore, the conversion and selectivity were not influenced by the presence of hydrogen. This would seem to suggest that light paraffins were mainly produced from hydrogen transfer during cracking, rather than hydrogenation of light olefins. Authors conclude that the inter-conversion of light olefins occurs through oligomerization of light olefins, followed by re-cracking of the oligomerized products. To guarantee high light olefin yield in catalytic naphtha cracking, it is necessary to suppress oligomerization of light olefins during catalytic cracking.