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Titolo:
Kinetics of aqueous-phase catalytic dehydration of 2-propanol
Autore:
Rivard, JM; Zhang, QL; Chuang, KT;
Indirizzi:
Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada Univ Alberta Edmonton AB Canada T6G 2G6 ngn, Edmonton, AB T6G 2G6, Canada
Titolo Testata:
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
fascicolo: 4, volume: 79, anno: 2001,
pagine: 517 - 523
SICI:
0008-4034(200108)79:4<517:KOACDO>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
METAL-OXIDE SURFACES; ISOPROPANOL; ZEOLITES; ETHANOL; DECOMPOSITION; CONVERSION; MIXTURES; ALCOHOLS; ACIDITY; H-ZSM-5;
Keywords:
2-propanol dehydration; kinetics; silicalite; slurry reactor;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Chuang, KT Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada Univ Alberta Edmonton AB Canada T6G 2G6 on, AB T6G 2G6, Canada
Citazione:
J.M. Rivard et al., "Kinetics of aqueous-phase catalytic dehydration of 2-propanol", CAN J CH EN, 79(4), 2001, pp. 517-523

Abstract

The aqueous-phase catalytic dehydration of 2-propanol was investigated in a batch slurry reactor. Alumina, zeolite 13X, SAPO-5 and silicalite are allactive in the liquid phase dehydration of 2-propanol at 463 K with silicalite being the most active catalyst. Propylene was found to be the major reaction product, with diisopropyl ether and acetone formed in trace amounts. The reaction kinetics over silicalite was determined at a temperature rangeof 434 to 463 K and at a concentration range of 4 to 10 mol% 2-propanol inwater. A single site Langmuir-Hinshelwood-Hougen-Watson (LHHW) type mechanism was found to describe the kinetic data well. Water was found to inhibitthe dehydration reaction. The activation energy over silicalite was determined to be 226.8 kJ/mol while the heat of adsorption for 2-propanol and water was -45.5 and -9.6 kJ/mol, respectively.

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Documento generato il 11/07/20 alle ore 06:42:45