Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/TiO<sub>2</sub>-SiO<sub>2</sub> catalysts

LIU Yingxin; LI Qiugui; YAN Wei

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Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/TiO₂-SiO₂ catalysts

更新时间：2025-12-10

- Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/TiO₂-SiO₂ catalysts
- CIESC Journal Issue 1, Pages: 98-103(2009)
- 作者机构：
  
  浙江工业大学催化加氢研发基地，绿色化学合成技术国家重点实验室培育基地
- 作者简介：
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- Online First：05 January 2009，
  
  Published：05 January 2009
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LIU Yingxin, LI Qiugui, YAN Wei. Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/TiO₂-SiO₂ catalysts[J]. CIESC Journal, 2009, (1): 98-103.
DOI：

LIU Yingxin, LI Qiugui, YAN Wei. Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/TiO₂-SiO₂ catalysts[J]. CIESC Journal, 2009, (1): 98-103. DOI：

摘要

采用等体积浸渍法制备了系列Co/TiO2-SiO2催化剂，用于肉桂醛选择性加氢制备肉桂醇反应体系。系统考察了钴含量、焙烧温度、还原温度、稀土助剂等参数变化对钴催化剂选择性加氢性能的影响。结果表明，钴催化剂的活性和选择性与其表面钴的晶粒度有一定关系，较大尺寸的钴物种对肉桂醛加氢有利。当Co含量为15%、焙烧温度和还原温度均为823 K时，催化剂表现出良好的加氢性能。稀土助剂La和Ce的引入能改善Co /TiO2-SiO2催化剂表面活性组分钴的分散度，提高了钴催化剂的加氢性能。

Abstract

A series of TiO2-SiO2 supported cobalt catalysts were prepared by using the incipient wetness impregnation method

and their activity and selectivity were evaluated for the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol.The effects of Co loading

calcination temperature

reduction temperature and rare earth promoters on the hydrogenation performance of the catalysts were tested.The results showed that the catalytic performance of cobalt catalyst depended on the crystal size of Co on the catalyst surface.The catalyst with bigger Co crystals exhibited higher hydrogenation activity and selectivity of cinnamyl alcohol.The optimal cobalt loading

calcination temperature and reduction temperature of the catalyst for cinnamaldehyde hydrogenation were found to be 15%

823 K and 823 K

respectively.The addition of rare earth La or Ce enhanced the dispersion of Co on the catalyst surface

and increased the catalytic activity.

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Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/TiO2-SiO2 catalysts

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Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/TiO₂-SiO₂ catalysts