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Tracer kinetic investigations on isomerization and synthesis of /sup 8/C-aromates. II. Isomerization of ethylbenzene by means of heterogeneous catalysts

Journal Article:

Abstract

The mechanism of ethylbenzene isomerization on Pt/Al/sub 2/O/sub 3/ catalysts by means of /sup 14/C labelled compounds has been investigated, measuring the isotope distribution between ring and alkyl carbon atoms. The results suggest that ethylbenzene isomerizes via structure rearrangement involving ring carbon atoms. A similar mechanism takes place in xylene isomerization under increased hydrogen partial pressure, while under normal pressure 1,2-methyl group shifting is dominating. All three xylenes are formed from ethylbenzene by parallel reactions.
Authors:
Dermietzel, J; Roesseler, M; Jockisch, W; Wienhold, C; [1]  Franke, H; Klempin, J; Barz, H J [2] 
  1. Akademie der Wissenschaften der DDR, Leipzig. Zentralinstitut fuer Isotopen- und Strahlenforschung
  2. VEB Petrolchemisches Kombinat Schwedt (German Democratic Republic)
Publication Date:
Jan 01, 1978
Product Type:
Journal Article
Reference Number:
AIX-09-372954; EDB-78-080529
Resource Relation:
Journal Name: Isotopenpraxis; (German Democratic Republic); Journal Volume: 14:1
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AROMATICS; ISOMERIZATION; ALUMINIUM OXIDES; CARBON 14 COMPOUNDS; CATALYSIS; CATALYSTS; CHEMICAL REACTION KINETICS; HYDROCARBONS; PLATINUM; TRACER TECHNIQUES; XYLENES; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; ISOTOPE APPLICATIONS; KINETICS; LABELLED COMPOUNDS; METALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; REACTION KINETICS; TRANSITION ELEMENTS; 400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
OSTI ID:
7277591
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Journal ID: CODEN: IPRXA
Submitting Site:
INIS
Size:
Pages: 14-18
Announcement Date:
Jul 01, 1978

Journal Article:

Citation Formats

Dermietzel, J, Roesseler, M, Jockisch, W, Wienhold, C, Franke, H, Klempin, J, and Barz, H J. Tracer kinetic investigations on isomerization and synthesis of /sup 8/C-aromates. II. Isomerization of ethylbenzene by means of heterogeneous catalysts. Germany: N. p., 1978. Web.
Dermietzel, J, Roesseler, M, Jockisch, W, Wienhold, C, Franke, H, Klempin, J, & Barz, H J. Tracer kinetic investigations on isomerization and synthesis of /sup 8/C-aromates. II. Isomerization of ethylbenzene by means of heterogeneous catalysts. Germany.
Dermietzel, J, Roesseler, M, Jockisch, W, Wienhold, C, Franke, H, Klempin, J, and Barz, H J. 1978. "Tracer kinetic investigations on isomerization and synthesis of /sup 8/C-aromates. II. Isomerization of ethylbenzene by means of heterogeneous catalysts." Germany.
@misc{etde_7277591,
title = {Tracer kinetic investigations on isomerization and synthesis of /sup 8/C-aromates. II. Isomerization of ethylbenzene by means of heterogeneous catalysts}
author = {Dermietzel, J, Roesseler, M, Jockisch, W, Wienhold, C, Franke, H, Klempin, J, and Barz, H J}
abstractNote = {The mechanism of ethylbenzene isomerization on Pt/Al/sub 2/O/sub 3/ catalysts by means of /sup 14/C labelled compounds has been investigated, measuring the isotope distribution between ring and alkyl carbon atoms. The results suggest that ethylbenzene isomerizes via structure rearrangement involving ring carbon atoms. A similar mechanism takes place in xylene isomerization under increased hydrogen partial pressure, while under normal pressure 1,2-methyl group shifting is dominating. All three xylenes are formed from ethylbenzene by parallel reactions.}
journal = {Isotopenpraxis; (German Democratic Republic)}
volume = {14:1}
journal type = {AC}
place = {Germany}
year = {1978}
month = {Jan}
}