Hydrophilicity Modification of MCM-41 With Zirconia and Supported Ruthenium-Lanthanum for Benzene Hydrogenation to Cyclohexene

Hydrophilicity Modification of MCM-41 With Zirconia and Supported Ruthenium-Lanthanum for Benzene Hydrogenation to Cyclohexene
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氧化锆和负载钌-镧对MCM-41进行亲水改性用于苯加氢制环己烯

DOI:
10.1080/15533174.2012.756905
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发表时间:
2013-04
影响因子:
--
通讯作者:
He’an Luo
He’an Luo
中科院分区:
工程技术4区
文献类型:
--
作者:
Pingle Liu;Fang Hao;Kuiyi You;He’an Luo

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采用水热合成法、原位合成法和沉淀法制备了氧化锆改性介孔分子筛MCM-41载体。采用双溶剂浸渍法制备了负载Ru和La的MCM-41和氧化锆改性MCM-41催化剂。用X-射线衍射仪、透射电子显微镜、氮气吸附-脱附和水/苯静态吸附技术对催化剂进行了表征。结果表明,用水热合成法(Ru-La/ZrO2-MCM-41-HS)将Ru-La负载到氧化锆改性的MCM-41上,使其亲水性增加最大。亲水性最高的Ru-La/ZrO2-MCM-41-HS催化剂在苯液相加氢制环己烯反应中表现出最好的性能。
Zirconia modified mesoporous molecular sieve MCM-41 supports were prepared by hydrothermal synthesis method, in situ synthesis method and precipitation method. Ruthenium and lanthanum supported on MCM-41 and zirconia modified MCM-41 catalysts were prepared via two solvents impregnation method. The catalysts were characterized by X-ray diffraction, transmission electron microscopy, nitrogen adsorption-desorption, and water/benzene static adsorptions techniques. It has been found that Ru-La supported on MCM-41 modified with zirconia by hydrothermal synthesis method (Ru-La/ZrO2-MCM-41-HS) leads to the biggest increase of the hydrophilicity. Ru-La/ZrO2-MCM-41-HS catalyst with the highest hydrophilicity shows the best performance in liquid phase hydrogenation of benzene to cyclohexene.
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