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Enantioselective Hydrogenation of alpha,beta-Unsaturated Carboxylic Acids: Effects of Palladium Particle Size and Support Acidic Property
Chen Chunhui; Zhan Ensheng; Yong, Li; Shen Wenjie
关键词Enantioselective Hydrogenation Alpha Pd Particle Size Beta-unsaturated Carboxylic Acid Oxide Support Acidity
刊名ACTA CHIMICA SINICA
2013-11-14
DOI10.6023/A13070728
71期:11页:1505-1510
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]CATALYZED ASYMMETRIC HYDROGENATION ; SUBSTITUTED (E)-2,3-DIPHENYLPROPENOIC ACIDS ; STRUCTURE SENSITIVITY ; (E)-2-METHYL-2-BUTENOIC ACID ; 2-METHYL-2-PENTENOIC ACID ; PD CATALYSTS ; NANOPARTICLES ; PD/AL2O3 ; CINCHONA ; SHAPE
英文摘要Effects of Pd particle size and support acidity on enantioselective hydrogenation of alpha,beta-unsaturated carboxylic acids were systematically studied using Pd nanoparticles with different size immobilized on various oxides. Small Pd particles showed higher activity in the hydrogenation of (E)-2-methyl-2-pentenoic acid due to the larger fraction of edge sites which were more active in olefin hydrogenation; but they did not change the reaction mechanism and/or the adsorption mode of reaction intermediates. Similar correlations in the hydrogenation of (E)-2-methyl-2-butenoic acid and 2-acetamidoacrylic acid further confirmed that the size of Pd particles only mediated the activity but did not alter the enantioselectivity. On the other hand, the activity and the enantioselectivity were strongly dependent on the acidity of the support. The TOF and the ee value followed the order TiO2>gamma-Al2O3>SiO2>CeO2, suggesting that the acidic support favored the adsorption of the reaction intermediates.
语种英语
WOS记录号WOS:000328574000007
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/137537
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Chen Chunhui,Zhan Ensheng,Yong, Li,et al. Enantioselective Hydrogenation of alpha,beta-Unsaturated Carboxylic Acids: Effects of Palladium Particle Size and Support Acidic Property[J]. ACTA CHIMICA SINICA,2013,71(11):1505-1510.
APA Chen Chunhui,Zhan Ensheng,Yong, Li,&Shen Wenjie.(2013).Enantioselective Hydrogenation of alpha,beta-Unsaturated Carboxylic Acids: Effects of Palladium Particle Size and Support Acidic Property.ACTA CHIMICA SINICA,71(11),1505-1510.
MLA Chen Chunhui,et al."Enantioselective Hydrogenation of alpha,beta-Unsaturated Carboxylic Acids: Effects of Palladium Particle Size and Support Acidic Property".ACTA CHIMICA SINICA 71.11(2013):1505-1510.
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