Enhancement of Catalytic Performances for the Conversion of Chloromethane to Light Olefins over SAPO-34 by Modification with Metal Chloride

Autor:	Jigang Zhao, Weiguo Xiao, Benxian Shen, Zhang Jiang, Ling-tao Kong, Lei Wang
Rok vydání:	2015
Předmět:	Metal chloride General Chemical Engineering Chloromethane Inorganic chemistry Hydrogen transfer General Chemistry Coke Industrial and Manufacturing Engineering Catalysis Metal chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Total acid
Zdroj:	Industrial & Engineering Chemistry Research. 54:12293-12302
ISSN:	1520-5045 0888-5885
Popis:	The conversion of chloromethane to light olefins over SAPO-34 modified with metal chloride has been investigated. The results show that the acid and the ratio of the strong acid density to the weak acid density can be regulated through modification with different metal chlorides. SAPO-34 modified with metal chloride showed a higher activity and better stability than SAPO-34, and the sample modified with FeCl3 presented the best stability among all of the investigated metal chlorides. The differences in catalytic behaviors among the samples modified with different metal chlorides suggest that the conversion of chloromethane to olefins is strongly influenced by the total acid density and the ratio of the strong acid density to the weak acid density. Coke formation and hydrogen transfer were alleviated over the samples modified with FeCl3, because of their lower total acid density and ratio of strong acid density to weak acid density compared to SAPO-34.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b35874acdfcdd32b21df55041bf8e14f https://doi.org/10.1021/acs.iecr.5b03586 Zobrazit plný text záznamu