Direct synthesis of diphenyl carbonate with heterogeneous catalysis reactionⅨ effect of Ce loading methods on catalytic activity of catalyst

ZHANG Guangxu; WU Yuanxin; MA Peisheng; WU Guangwen; LI Dinghuo

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Direct synthesis of diphenyl carbonate with heterogeneous catalysis reactionⅨ effect of Ce loading methods on catalytic activity of catalyst

更新时间：2025-12-10

- Direct synthesis of diphenyl carbonate with heterogeneous catalysis reactionⅨ effect of Ce loading methods on catalytic activity of catalyst
- CIESC Journal Issue 1, Pages: 82-87(2005)
- 作者机构：
  
  1. 武汉化工学院湖北省绿色化学与新型反应器重点实验室,湖北,武汉,430074
  2. 天津大学化工学院一碳化工国家重点实验室,天津,300072
- 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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ZHANG Guangxu, WU Yuanxin, MA Peisheng, et al. Direct synthesis of diphenyl carbonate with heterogeneous catalysis reactionⅨ effect of Ce loading methods on catalytic activity of catalyst[J]. CIESC Journal, 2005, (1): 82-87.
DOI：

ZHANG Guangxu, WU Yuanxin, MA Peisheng, et al. Direct synthesis of diphenyl carbonate with heterogeneous catalysis reactionⅨ effect of Ce loading methods on catalytic activity of catalyst[J]. CIESC Journal, 2005, (1): 82-87. DOI：

摘要

通过XRD、TPR对不同的Ce添加方法所得催化剂进行了表征，结果表明用溶胶-凝胶法所得催化剂中Ce、Sn主要以CeXSn1-xO2物相存在.用混烧法所得催化剂中，Ce和Sn分别以CeO2、SnO2物相形式存在，而用沉淀法所得的催化剂中，Ce则以CeO2晶相的形式存在，Sn与载体其他元素形成了共融体.对3种催化剂的形貌和比表面积进行了表征，结果表明溶胶-凝胶法所得催化剂的表面呈蜂窝状、比表面积较大.用碳酸二苯酯（DPC）的合成实验对催化剂的活性及催化剂的寿命进行评价，结果表明无论是催化剂的活性还是催化剂的寿命，溶胶-凝胶法所得催化剂较好.此外还对DPC合成工艺条件进行优化.

Abstract

Supported Pd-Sn-Ce catalysts for direct synthesis of diphenyl carbonate (DPC) were prepared with three different Ce loading methods that were sol-gel，co-calcination and precipitation methods.The characterization of the catalysts prepared with different Ce loading methods were investigated by XRD and TPR respectively

and the results showed that the main crystal phases in the different catalysts were all La0.62 Pb0.38MnO3.But CeO2 and CeXSn1-xO2 were also detected in the catalyst prepared by sol-gel method;CeO2 and SnO2 were identified in the catalyst prepared by co-calcination method and CeO2 was discovered in the catalyst prepared by precipitation method

too.Specific surface areas of catalysts prepared with different Ce loading methods were determined by SEM and specific surface area instrument

the results showed the SBET of catalyst prepared by sol-gel method was larger than that of the others.The synthesis of DPC was carried out and it was found that the activity and life of catalyst prepared by sol-gel was better than that of the others.Furthermore

optimization of synthesis conditions for different catalysts was also carried out respectively.

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