A Ti-containing Molecular Sieve Assembled from Titanosilicate Precursors with Long-chain Alkylamines

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• 作者：Changzi Jin (1)
  Gang Li (1)
  Xiangsheng Wang (1)
  Lixia Zhao (1)
  Yun Wang (1)
  Dewei Sun (1)
  
• 关键词：Ti ; WMS ; Mesopore ; Micropore ; Synthesis ; Oxidation
• 刊名：Topics in Catalysis
• 出版年：2008
• 出版时间：July 2008
• 年：2008
• 卷：49
• 期：1-2
• 页码：118-124
• 全文大小：287KB
• 参考文献：1. Taramasso M, Perego G, Notari B (1983) US Pat 4,410,501
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• 作者单位：Changzi Jin (1)
  Gang Li (1)
  Xiangsheng Wang (1)
  Lixia Zhao (1)
  Yun Wang (1)
  Dewei Sun (1)
  
  1. Department of Catalytical Chemistry and Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116012, People’s Republic of China
  
• ISSN：1572-9028

文摘

Novel Ti-containing wormlike mesoporous silica (Ti-WMS) had been synthesized through assembly of preformed titanosilicate-1 precursors with long-chain alkylamines at room temperature. The structural and catalytic properties of prepared material were characterized by a variety of techniques including powder X-ray diffraction, transmission electron microscopy, infrared spectroscopy, UV–Visible spectroscopy, N2 physical adsorption and oxidative desulfurization reactions. The hydrothermal stability of Ti-WMS in steam and boiling water was investigated with comparing to the conventional Ti-HMS. It has been shown that Ti-WMS, relative to Ti-HMS, possesses disordered mesostructure, thicker porous walls, improved amount of micropores and higher catalytic activities, which can be attributed to the existence of zeolitic building units in it. However, there is no enhancement in hydrothermal stability of Ti-WMS assembled from zeolite precursors relative to Ti-HMS prepared through conventional process.