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Titolo:
Effects of acid strength and micro pore size on epsilon-caprolactam selectivity and catalyst deactivation in vapor phase Beckmann rearrangement over acid solid catalysts
Autore:
Takahashi, T; Nasution, MNA; Kai, T;
Indirizzi:
Kagoshima Univ, Fac Engn, Dept Chem Engn & Appl Chem, Kagoshima 8900065, Japan Kagoshima Univ Kagoshima Japan 8900065 pl Chem, Kagoshima 8900065, Japan
Titolo Testata:
APPLIED CATALYSIS A-GENERAL
fascicolo: 1-2, volume: 210, anno: 2001,
pagine: 339 - 344
SICI:
0926-860X(20010309)210:1-2<339:EOASAM>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYCLOHEXANONE OXIME; ZEOLITE;
Keywords:
Beckmann rearrangement; solid acid catalyst; micropore size; acid strength; catalyst deactivation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Takahashi, T Kagoshima Univ, Fac Engn, Dept Chem Engn & Appl Chem, Kagoshima 8900065, Japan Kagoshima Univ Kagoshima Japan 8900065 shima 8900065, Japan
Citazione:
T. Takahashi et al., "Effects of acid strength and micro pore size on epsilon-caprolactam selectivity and catalyst deactivation in vapor phase Beckmann rearrangement over acid solid catalysts", APP CATAL A, 210(1-2), 2001, pp. 339-344

Abstract

The vapor phase Beckmann rearrangement of cyclohexanone oxime (CHO) over solid acid catalysts including zeolites was carried our to elucidate the effects of the acid strength and the micropore size of the catalysts on the selectivity of E-caprolactam (CL) and the catalyst deactivation rate. It was found that the catalyst deactivation rate was strongly dependent on the acid strength of the acid catalysts. The improvement of catalyst life was achieved by using MFI-type metallosilicates having weak acid sites. The CL selectivity decreased over the acid catalysts with micropores larger than thoseof the MFI zeolites. Furthermore, using methanol and carbon dioxide as thediluent solvent and diluent gas improved CL selectivity and catalyst life,respectively. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/11/17 alle ore 05:51:09