高等学校化学学报

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新型复合介孔材料HPMo/SBA-15的合成与表征

史春风1,2; 万利丰1; 王润伟1; 龙军2; 朱广山1; 裘式纶1   

  1. 1. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012;
    2. 中国石油化工集团, 石油化工科学研究院, 北京 100083
  • 收稿日期:2005-05-25 修回日期:1900-01-01 出版日期:2006-07-10 发布日期:2006-07-10
  • 通讯作者: 裘式纶

Synthesis and Characterization of a New HPMo/SBA-15 Composite

SHI Chun-Feng1,2; WAN Li-Feng1; WANG Run-Wei1; LONG Jun2; ZHU Guang-Shan1; QIU Shi-Lun1*   

  1. 1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,
    College of Chemistry, Jilin University, Changchun 130012, China;
    2. Research Institute of Petroleum Processing, China Petroleum & Chemical
    Corporation, Beijing 100083, China
  • Received:2005-05-25 Revised:1900-01-01 Online:2006-07-10 Published:2006-07-10
  • Contact: QIU Shi-Lun

摘要: 合成了一种新型复合介孔材料HPMo/SBA-15, 通过XRD, TEM, UV-Vis和IR等方法表征证明HPMo均匀且稳定地包藏到介孔材料SBA-15的由SiO2网络组成的孔壁中. 催化实验结果表明, 该材料在大分子催化裂化反应中具有很高的活性, 在大分子催化氧化反应中连续循环使用未发现活性组分流失, 显示了其在大分子催化和均相催化反应多相化中具有很好的应用前景.

关键词: SBA-15, 12-磷钼酸, 包藏, 复合材料, 大分子催化

Abstract: A new mesosilica HPMo/SBA-15 with molybdophosphoric acid encapsulated into its framework was synthesized by adding HPMo into a sol-gel system involving hydrolysis of tetraethyl orthosilicate under the strong acidic conditions(pH<0). Its structure and physicalchemical properties were characterized by various methods, its catalytic activities were measured by the cracking of 1,3,5 triisopropylbenzene and oxidation reaction of 2,3,6trimethylphenol. The results show that the mesosilica with molybdophosphoric acid encapsulated into its framework was insoluble and readily separable during the catalysis reactions, and was mesoporous materials with uniform mesopores and high specific surface areas, and also show that the HPMo is tightly encapsulated into the network of mesosilica walls and does not leach from the walls. HPMo/SBA-15 is the promising and new catalysts for acid catalytic and redox-atalytic reactions, and the potential replacer of catalysts in the homogenous
reaction to solve the separation and recycle problems.

Key words: SBA-15, Molybdophosphoric acid, Encapsulate, Composite material, Bulky molecule catalysis

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