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Titolo:
Oxidative dehydrogenation and cracking of ethane and propane over LiDyMg mixed oxides
Autore:
Fuchs, S; Leveles, L; Seshan, K; Lefferts, L; Lemonidou, A; Lercher, JA;
Indirizzi:
TU Munchen, Dept Chem, Inst Chem Technol, Garching, Germany TU Munchen Garching Germany Chem, Inst Chem Technol, Garching, Germany Univ Twente, Dept Chem Engn, NL-7500 AE Enschede, Netherlands Univ TwenteEnschede Netherlands NL-7500 AE 500 AE Enschede, Netherlands Aristotelian Univ Salonika, Dept Chem Engn, Salonika, Greece Aristotelian Univ Salonika Salonika Greece Chem Engn, Salonika, Greece
Titolo Testata:
TOPICS IN CATALYSIS
fascicolo: 2-4, volume: 15, anno: 2001,
pagine: 169 - 174
SICI:
1022-5528(2001)15:2-4<169:ODACOE>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
MG-O CATALYSTS; LIGHT OLEFINS; BUTANE;
Keywords:
oxidative dehydrogenation; mixed metal oxides; ethane; propane;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Fuchs, S TU Munchen, Dept Chem, Inst Chem Technol, Garching, Germany TU Munchen Garching Germany st Chem Technol, Garching, Germany
Citazione:
S. Fuchs et al., "Oxidative dehydrogenation and cracking of ethane and propane over LiDyMg mixed oxides", TOP CATAL, 15(2-4), 2001, pp. 169-174

Abstract

The oxidative dehydrogenation and cracking of ethane and propane over LiDyMg mixed oxides is reported. High yields of olefins and only moderate formation of carbon oxides was observed. Both are primary products that hardly interconvert under the reaction conditions used. Addition of chloride increases the rate of reaction, while slightly decreasing the selectivity to olefins. The addition of carbon dioxide strongly decreases the rate of reaction, the negative order of 0.5 indicating that two active Li+ sites are blocked by the adsorption of one CO2 molecule. The reaction proceeds at low oxygen pressure primarily via elimination of dihydrogen, while at higher oxygen partial pressure the hydrogen elimination occurs via water formation. It isspeculated that dehydrogenation and cracking involve Li+ and a rather nucleophilic oxygen site.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/06/20 alle ore 15:55:48