Synthesis of stainless-steel-net supported TS-1 catalyst and Its catalytic performance in liquid-phase epoxidation reactions / Yuting Zheng in Industrial & engineering chemistry research, Vol. 50 N° 16 (Août 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 16 (Août 2011) . - pp. 9587-9593 Titre : Synthesis of stainless-steel-net supported TS-1 catalyst and Its catalytic performance in liquid-phase epoxidation reactions Type de document : texte imprimé Auteurs : Yuting Zheng, Auteur ; Yingtian Zhang, Auteur ; Zhendong Wang, Auteur Année de publication : 2011 Article en page(s) : pp. 9587-9593 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Epoxidation Liquid phase Catalytic reaction Catalyst Stainless steel Résumé : TS-1 particles were loaded on stainless-steel-net (SSN) to form an integrated material (TS-1/SSN) by secondary hydrothermal synthesis. This avoided completely the filtration separation in both catalyst preparation and catalytic applications in liquid-phase reactions. Seeding-assisted secondary crystallization prevented zeolite from detaching from the support during the synthesis process. The TS-1 particles were coated on the SSN support uniformly, and their loading amount was adjustable in the range of 7―25 wt % by repeating the seeding and crystallization processes. UV―visible and IR spectra verified that the titanium species in TS-1/SSN mostly occupied the tetrahedral coordination sites in the zeolite framework. TS-1/SSN was comparably active to conventional TS-1 particles in batchwise epoxidation of 1-hexene with H2O2. The zeolite particles maintained the catalytic activity and did not detach from the SSN after five reuses. Moreover, TS-I/SSN proved to be efficient and reusable in continuous epoxidation of allyl chloride where the separation of products and catalyst occurred easily. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24425201 [article] Synthesis of stainless-steel-net supported TS-1 catalyst and Its catalytic performance in liquid-phase epoxidation reactions [texte imprimé] / Yuting Zheng, Auteur ; Yingtian Zhang, Auteur ; Zhendong Wang, Auteur . - 2011 . - pp. 9587-9593. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 16 (Août 2011) . - pp. 9587-9593 Mots-clés : Epoxidation Liquid phase Catalytic reaction Catalyst Stainless steel Résumé : TS-1 particles were loaded on stainless-steel-net (SSN) to form an integrated material (TS-1/SSN) by secondary hydrothermal synthesis. This avoided completely the filtration separation in both catalyst preparation and catalytic applications in liquid-phase reactions. Seeding-assisted secondary crystallization prevented zeolite from detaching from the support during the synthesis process. The TS-1 particles were coated on the SSN support uniformly, and their loading amount was adjustable in the range of 7―25 wt % by repeating the seeding and crystallization processes. UV―visible and IR spectra verified that the titanium species in TS-1/SSN mostly occupied the tetrahedral coordination sites in the zeolite framework. TS-1/SSN was comparably active to conventional TS-1 particles in batchwise epoxidation of 1-hexene with H2O2. The zeolite particles maintained the catalytic activity and did not detach from the SSN after five reuses. Moreover, TS-I/SSN proved to be efficient and reusable in continuous epoxidation of allyl chloride where the separation of products and catalyst occurred easily. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24425201

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