Geometric effect promoted hydrotalcites catalysts towards aldol condensation reaction

作     者：Huimin Wang Weihan Bing Chunyuan Chen Yusen Yang Ming Xu Lifang Chen Lei Zheng Xiaolin Li Xin Zhang Jianjun Yin Min Wei 王慧敏;邴威瀚;陈春源;杨宇森;徐明;陈利芳;郑雷;李晓林;张欣;殷建军;卫敏

作者机构：State Key Laboratory of Chemical Resource EngineeringBeijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China China Tianchen Engineering Corporation Technology Research and Development CenterTianjin 300400China Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China SINOPEC Beijing Research Institute of Chemical IndustryBeijing 100013China 

基　　金：国家自然科学基金(21871021,21521005,91741104) 国家重点研发计划(2017YFA0206804) 中央高校基本科研业务费专项资金(buctylkxj01,XK1802-6) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第8期

页      码：1279-1287页

摘      要：In solid basic catalysis field,how to achieve optimized activity and desired stability through elaborate control over basic site properties remains a *** this work,taking advantage of the structure memory effect of layered double hydroxides(LDHs),rehydrated Ca4 Al1-x Gax-LDHs and Ca4 Al1-x Inx-LDHs catalysts were prepared and applied in aldol condensation reaction that isobutyraldehyde(IBD)reacts with formaldehyde(FA)to obtain hydroxypivalaldehyde(HPA).Notably,the resulting re-Ca4 Al0.90Ga0.10-LDHs exhibits an extraordinarily-high catalytic activity(HPA yield:72%),which is to our best knowledge the highest level in this *** weak Br?nsted basic site,7-coordinated Ca-OH group,which serves as an active site,catalyzes the condensation process and promotes the product *** on structure-property correlations demonstrate that Ga as a structural promoter induces a moderate expansion of the laminate lattice,which results in a significant increase in the concentration of weak basic sites in re-Ca4Al0.90Ga0.10-LDHs,accounting for its high catalytic *** work illuminates that geometric structure of basic active sites can be tuned via introducing catalyst additive,which leads to a largely improved performance of hydrotalcite solid basic catalysts towards aldol condensation reaction.

主 题 词：Solid basic catalyst Geometric structure Structural promoter Aldol condensation Reconstructed hydrotalcite material 

学科分类：081702[081702] 081705[081705] 08[工学] 0817[工学-轻工类] 080502[080502] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1016/S1872-2067(20)63556-2

馆 藏 号：203885651...