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Continuous Acetone Ammoximation over TS-1 in a Tubular Membrane Reactor / Zhaohui Li in Industrial & engineering chemistry research, Vol. 49 N° 14 (Juillet 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6309–6316 Titre : Continuous Acetone Ammoximation over TS-1 in a Tubular Membrane Reactor Type de document : texte imprimé Auteurs : Zhaohui Li, Auteur ; Rizhi Chen, Auteur ; Weihong Xing, Auteur Année de publication : 2010 Article en page(s) : pp. 6309–6316 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Tubular  membrane  reactor Résumé : A new tubular membrane reactor based on tubular metallic membrane is developed, which can solve the problem concerning in situ separation of catalyst from the reaction mixture and make the production process continuous. In this article, the feasibility of continuous ammoximation of acetone to acetone oxime over titanium silicalites-1 (TS-1) in the tubular membrane reactor was investigated. It has demonstrated that the tubular membrane reactor system can maintain a more long-term steady production of acetone oxime than that of a side-stream ceramic membrane reactor and has a higher productivity than the batch reactor. The effects of operation conditions (stirring rate, residence time, temperature, catalyst concentration, molar ratio of NH3/acetone, H2O2/acetone, and t-butanol/acetone) on the performances of the reaction system were examined via single factor experiments. Results show that the operation conditions greatly affect the conversion, selectivity of acetone ammoximation, and the filtration resistance. The acetone conversion is >94.5% and the acetone oxime selectivity remains stable at 98% in a 30-h continuous run. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901912e [article] Continuous Acetone Ammoximation over TS-1 in a Tubular Membrane Reactor [texte imprimé] / Zhaohui Li, Auteur ; Rizhi Chen, Auteur ; Weihong Xing, Auteur . - 2010 . - pp. 6309–6316. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6309–6316 Mots-clés : Tubular  membrane  reactor Résumé : A new tubular membrane reactor based on tubular metallic membrane is developed, which can solve the problem concerning in situ separation of catalyst from the reaction mixture and make the production process continuous. In this article, the feasibility of continuous ammoximation of acetone to acetone oxime over titanium silicalites-1 (TS-1) in the tubular membrane reactor was investigated. It has demonstrated that the tubular membrane reactor system can maintain a more long-term steady production of acetone oxime than that of a side-stream ceramic membrane reactor and has a higher productivity than the batch reactor. The effects of operation conditions (stirring rate, residence time, temperature, catalyst concentration, molar ratio of NH3/acetone, H2O2/acetone, and t-butanol/acetone) on the performances of the reaction system were examined via single factor experiments. Results show that the operation conditions greatly affect the conversion, selectivity of acetone ammoximation, and the filtration resistance. The acetone conversion is >94.5% and the acetone oxime selectivity remains stable at 98% in a 30-h continuous run. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901912e