Cu-Cr<sub>2</sub>O<sub>3</sub> catalysts for hydrogenation of methyl difluoroacetate to 2,2-difluoroethanol

CAO Xiaoyan; ZHENG Suzhen; WU Zhouan; WANG Shuhua; ZHOU Qiang; LU Jiqing; LUO Mengfei

doi:10.3969/j.issn.0438-1157.2013.06.028

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Cu-Cr₂O₃ catalysts for hydrogenation of methyl difluoroacetate to 2,2-difluoroethanol

更新时间：2025-12-10

- Cu-Cr₂O₃ catalysts for hydrogenation of methyl difluoroacetate to 2,2-difluoroethanol
- CIESC Journal Issue 6, Pages: 2103-2108(2013)
- 作者机构：
  
  1. 浙江师范大学物理化学研究所,先进催化材料教育部重点实验室,浙江,金华,321004
  2. 浙江巨化集团技术中心,浙江,衢州,324004
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.06.028
  CLC： 643
- Online First：05 June 2013，
  
  Published：05 June 2013
- 稿件说明：
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CAO Xiaoyan, ZHENG Suzhen, WU Zhouan, et al. Cu-Cr₂O₃ catalysts for hydrogenation of methyl difluoroacetate to 2,2-difluoroethanol[J]. CIESC Journal, 2013, (6): 2103-2108. DOI: 10.3969/j.issn.0438-1157.2013.06.028.
DOI：

CAO Xiaoyan, ZHENG Suzhen, WU Zhouan, et al. Cu-Cr₂O₃ catalysts for hydrogenation of methyl difluoroacetate to 2,2-difluoroethanol[J]. CIESC Journal, 2013, (6): 2103-2108. DOI: 10.3969/j.issn.0438-1157.2013.06.028. DOI：

摘要

采用共沉淀法制备了Cu-Cr2O3催化剂

考察了铜含量对Cu-Cr2O3催化剂的二氟乙酸甲酯加氢合成二氟乙醇性能的影响。运用X射线衍射(XRD)、程序升温还原(TPR)、BET和Raman光谱技术对该催化剂进行了表征。结果表明

还原态Cu-Cr2O3催化剂物相主要由Cu和Cr2O3组成

然而30Cu-Cr2O3和50Cu-Cr2O3催化剂存在少量CuCr2O4和CuCrO2复合氧化物。随着铜含量的增加

Cu-Cr2O3催化剂的二氟乙酸甲酯单程转化率呈现先上升后下降的趋势

而二氟乙醇选择性保持在70%左右; 30Cu-Cr2O3催化剂的二氟乙酸甲酯单程转化率达到最大值97%。Cu-Cr2O3催化剂的二氟乙酸甲酯加氢反应比速率随着铜含量的增加呈现增大的趋势

反应比速率的提高可能与催化剂中CuCr2O4和CuCrO2物种的存在有关。

Abstract

Cu-Cr2O3 catalysts were prepared by the coprecipitation method.The effect of Cu content on catalytic performance for hydrogenation of methyl difluoroacetate to 2

2-difluoroethanol was investigated.The catalysts were characterized with XRD

H2-TPR

BET and Raman techniques.The results showed that the reduced Cu-Cr2O3 catalysts contained mainly Cu and Cr2O3

while catalysts with a high Cu content (e.g.30 Cu-Cr2O3 and 50 Cu-Cr2O3) contained CuCr2O4 and CuCrO2 oxides.It was also found that with increasing Cu content

conversion of methyl difluoroacetate first increased and then slightly decreased and selectivity to 2

2-difluoroethanol was about 70%.The 30Cu-Cr2O3 catalyst exhibited the highest conversion of 97%.In addition

conversion of methyl difluoroacetate increased gradually in bi-component Cu-Cr2O3 catalysts with increasing Cu content

which was probably due to the presence of CuCr2O4 and CuCrO2 oxides.

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Cu-Cr2O3 catalysts for hydrogenation of methyl difluoroacetate to 2,2-difluoroethanol

DOI：10.3969/j.issn.0438-1157.2013.06.028

摘要

Abstract

关键词

Keywords

references

Cu-Cr₂O₃ catalysts for hydrogenation of methyl difluoroacetate to 2,2-difluoroethanol