The influence of gaseous chlorine on the chemical and catalytic properties of alumina

Autor:	Miroslaw Derewinski, Marek Marczewski, Stanislaw Malinowski
Rok vydání:	1983
Předmět:	Olefin fiber Surface oxygen Chemistry Stereochemistry General Chemical Engineering Polymer chemistry Chlorine chemistry.chemical_element Lewis acids and bases Brønsted–Lowry acid–base theory Isomerization Catalysis
Zdroj:	The Canadian Journal of Chemical Engineering. 61:93-97
ISSN:	1939-019X 0008-4034
DOI:	10.1002/cjce.5450610116
Popis:	The influence of gaseous chlorine on the chemical and catalytic properties of alumina was investigated. Cl2 reacts both with surface OH groups and with surface oxygen anions possessing electron-donating power, forming new surface sites. When such chlorine treatment is performed at a low temperature (293 K), both Lewis and Bronsted acid centres are formed. High temperature chlorination leads exclusively to Lewis acid sites. It is proposed that such Lewis sites are responsible for olefin isomerization reactions. On a etudie l'influence du chlore a l'etat gazeux sur les proprietes chimiques et catalytiques de l'alumine. Cl2 reagit a la fois avec les groupes OH superficiels et les anions oxygene superficiels donneurs d'electrons, et forme de nouveaux sites en surface. Lorsque le traitement au chlore se fait a basse temperature (293 K), il se produit des centres acides de Lewis et de Bronsted. La chloruration a temperature elevee conduit exclusivement aux sites acides de Lewis. Il y a lieu de croire que les sites de Lewis sont responsables des reactions d'isomerisation des olefines.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fb790b31db114a3e4f4fefa97ec3eb39 https://doi.org/10.1002/cjce.5450610116 Zobrazit plný text záznamu Plný text