Abstract: Nanocrystalline MgO has been found to be an efficient dehydrohalogenation catalyst. Its reaction with different chlorobutane isomers or 1-bromobutane results in topochemical transformation of the MgO phase to MgCl2 or MgBr2 accompanied by a sharp decrease in the catalyst surface area and increase in its activity. The resulting magnesium chloride and magnesium bromide are very active catalysts for HCl and HBr elimination from halogenated hydrocarbons. The reaction mechanism changes from predominantly E2 elimination on MgO to mostly E1 elimination over MgCl2 and MgBr2, which act as Lewis acids. It was also found that MgBr2 could be completely converted back to MgO by calcination in oxygen at 500°C while MgCl2 oxidation did not occur under similar conditions.

Cite: Mishakov I.V. , Bedilo A.F. , Richards R.M. , Chesnokov V.V. , Volodin A.M. , Zaikovskii V.I. , Buyanov R.A. , Klabunde K.J.
Nanocrystalline MgO as a Dehydrohalogenation Catalyst
Journal of Catalysis. 2002. V.206. N1. P.40-48. DOI: 10.1006/jcat.2001.3474 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	May 10, 2001
Accepted:	Nov 21, 2001
Published print:	Feb 15, 2002
Published online:	May 25, 2002

Identifiers:

Web of science:	WOS:000174003200005
Scopus:	2-s2.0-0036352083
Elibrary:	14243232
Chemical Abstracts:	2002:112649
Chemical Abstracts (print):	136:401384
OpenAlex:	W2143441088

Citing:

DB	Citing
Web of science	139
Scopus	164
Elibrary	166
OpenAlex	154

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