Hydrogenation of α-alkyl benzoic alcohol into corresponding alkyl benzene catalyzed by Pd/C

WANG Lin; WANG Dongxian; GONG Qingtao; ZHAO Sui; YU Jiayong

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Hydrogenation of α-alkyl benzoic alcohol into corresponding alkyl benzene catalyzed by Pd/C

更新时间：2025-12-10

- Hydrogenation of α-alkyl benzoic alcohol into corresponding alkyl benzene catalyzed by Pd/C
- CIESC Journal Issue 1, Pages: 70-74(2005)
- 作者机构：
  
  中国科学院理化技术研究所,北京,100101
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 January 2005，
  
  Published：25 January 2005
- 稿件说明：
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WANG Lin, WANG Dongxian, GONG Qingtao, et al. Hydrogenation of α-alkyl benzoic alcohol into corresponding alkyl benzene catalyzed by Pd/C[J]. CIESC Journal, 2005, (1): 70-74.
DOI：

WANG Lin, WANG Dongxian, GONG Qingtao, et al. Hydrogenation of α-alkyl benzoic alcohol into corresponding alkyl benzene catalyzed by Pd/C[J]. CIESC Journal, 2005, (1): 70-74. DOI：

摘要

研究了在H2-HAc-HClO4体系中，Pd/C催化氢化α-烷基取代苯甲醇到相应的支链烷基苯的反应.讨论了反应温度、氢气压力、Pd/C催化剂用量对反应的影响，以及高氯酸作为助催化剂在此反应中起的重要作用.高氯酸作为助催化剂时，最佳的反应条件是：质量分数为5%～10%的Pd/C催化剂，室温15～30 ℃，氢气压力400～800 kPa.XPS能谱分析表明，在高氯酸存在下Pd的表面生成了PdOxCly原子簇化合物，形成高活性的活性中心，对催化氢化起到了促进作用.

Abstract

α-Alkyl benzoic alcohol is hydrogenated over Pd/C in the H2-HAc-HClO4 system into the corresponding branched-alkyl benzene.The influence of the reaction temperature

hydrogen gas pressure and the amount of catalyst is investigated.Perchloric acid as co-catalyst plays a key role in relation to the catalyst activity.Room temperature (15—30℃)

H2 pressure (400—800 kPa)

and 5%—10% Pd/C catalyst by mass are the optimum conditions for this hydrogenation reaction.Perchloric acid as co-catalyst can lead to formation of PdOxCly cluster on the surface of Pd during the hydrogenation reaction.PdOxCly cluster may be a new active center

which enhances the activity of catalyst.

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