高等学校化学学报

高等学校化学学报

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MCM-41-HY复合分子筛的合成及其在深度加氢脱硫中的应用

任靖1, 王安杰1,2, 李翔1,2, 曹光伟1, 鲁墨弘1, 胡永康1,2   

    1. 大连理工大学, 精细化工国家重点实验室,
    2. 辽宁省省级高校石油化工技术与装备重点实验室, 大连 116012
  • 收稿日期:2006-01-03 修回日期:1900-01-01 出版日期:2006-12-10 发布日期:2006-12-10
  • 通讯作者: 王安杰

Synthesis of MCM-41-HY Composite Molecular Sieves and Their Application to Deep Hydrodesulfurization

REN Jing1, WANG An-Jie1,2, LI Xiang1,2, CAO Guang-Wei1, LU Mo-Hong1, HU Yong-Kang1,2

  

    1. State Key Laboratory of Fine Chemicals,
    2. Liaoning Key Laboratory of Petroleum Technology and Equipments, Dalian University of Technology, Dalian 116012, China
  • Received:2006-01-03 Revised:1900-01-01 Online:2006-12-10 Published:2006-12-10
  • Contact: WANG An-Jie

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被引次数

19

摘要： 在水热条件下合成了包覆型MCM-41-HY复合分子筛. 采用XRD、N2气吸附和SEM等方法对其进行了表征. 结果表明, MCM-41-HY复合分子筛和MCM-41与H型Y沸石(HY)的机械混合物明显不同, 在复合分子筛MCM-41-HY中, 中孔相MCM-41附晶生长在HY沸石上, 将HY包覆起来. 以二苯并噻吩为模型化合物, 考察了该材料担载NiMo催化剂的加氢脱硫活性. 结果表明, MCM-41-HY复合分子筛与MCM-41和HY的机械混合物担载NiMo催化剂的加氢脱硫(HDS)活性相当, 但MCM-41-HY复合分子筛担载NiMo催化剂的裂化活性较低. 其裂化活性不同的原因在于其载体孔道结构和酸性位的分布不同.

关键词: 复合分子筛, MCM-41, 合成, 加氢脱硫, HY沸石

Abstract: MCM-41-HY composite molecular sieves were synthesized hydrothermally, and characterized by means of XRD, N2 adsorption and SEM. A comparison was made between the mechanical mixture of MCM-41 and HY, and the synthesized MCM-41-HY composite molecular sieves as the hydrodesulfurization(HDS) catalyst support. Both exhibit excellent activities in the HDS hydrodesulfurization of dibenzothiophene, but, the composite shows a much lower hydrocracking activity than the mechanical mixture. It is proposed that the lower hydrocracking activity of MCM-41-HY composite molecular sieves may be attributed to the bimodal structure in which HY zeolite is wrapped by the mesoporous MCM-41.

Key words: Composite molecular sieves, MCM-41, Synthesis, Hydrodesulfurization, HY zeolite

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