Synthesis of Stainless-Steel-Net Supported TS-1 Catalyst and Its Catalytic Performance in Liquid-Phase Epoxidation Reactions

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• 作者：Yuting Zheng ; Yingtian Zhang ; Zhendong Wang ; Yueming Liu ; Mingyuan He ; Peng Wu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2011
• 出版时间：August 17, 2011
• 年：2011
• 卷：50
• 期：16
• 页码：9587-9593
• 全文大小：931K
• 年卷期：v.50,no.16(August 17, 2011)
• ISSN：1520-5045

文摘

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鈥?5 wt % by repeating the seeding and crystallization processes. UV鈥搗isible 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-1/SSN proved to be efficient and reusable in continuous epoxidation of allyl chloride where the separation of products and catalyst occurred easily.