Catalytic performance of morphology-controlled Pd/SBA-15 in hydrogenation of alkyl-anthraquinone

Catalytic performance of morphology-controlled Pd/SBA-15 in hydrogenation of alkyl-anthraquinone
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形貌控制的Pd/SBA-15在烷基蒽醌加氢中的催化性能

DOI:
10.1016/j.micromeso.2020.110672
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发表时间:
2020-11
影响因子:
5.2
通讯作者:
Zong baoning
Zong baoning
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhang yue;Wang li;Wang nan;Gao guohua;Pan zhiyong;Zong baoning

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在常规合成方法的基础上,加入正癸烷,合成了单分散的介孔SBA-15氧化硅。以SBA-15为载体,制备了2-烷基蒽醌加氢Pd催化剂,并通过扫描电镜、透射电镜、X射线衍射、XPS和N2吸附-脱附等手段对催化剂进行了表征。当正癸烷与P123的摩尔比(C10/P123)为120 ~ 240时,SBA-15的孔道长度缩短,中孔尺寸增大,微孔比例降低,分散性较好。在C10/P123中以240合成的SBA-15为载体的Pd催化剂表现出较好的上级催化性能。2-乙基蒽醌、叔丁基蒽醌和戊基蒽醌的初始加氢速率分别比无癸烷的SBA-15催化剂提高约300%、183%和150%,活性蒽醌的选择性> 99%。
Monodispersed mesoporous SBA-15 silica was synthesized by addingn-decane to conventional synthesis recipe. Pd catalysts for 2-alkyl-anthraquinone hydrogenation were then prepared on the as-synthesized SBA-15 and characterized by scanning and transmission electron micrographs, X-ray diffraction, XPS spectroscopy and N2adsorption-desorption. At the molar ratio ofn-decane to P123 (C10/P123) ranging between 120 and 240, monodispersed SBA-15, together with the shortened length of pore channels, expanded size of mesopores and decreased proportion of micropores could be obtained. The Pd catalyst on SBA-15 synthesized with 240 in C10/P123 exhibited the superior catalytic performance. The initial hydrogenation rate of 2-ethyl-, tert-butyl- and amyl-anthraquinone increases by approximately 300%, 183% and 150% compared with that on SBA-15 synthesized using a recipe withoutn-decane, with the selectivity to active anthraquinone of >99%.
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