不同载体负载Cu催化剂上甘油氢解制1,2-丙二醇催化性能的研究

郝顺利; 彭伟才; 赵宁; 肖福魁; 魏伟; 孙予罕; 李海

不同载体负载Cu催化剂上甘油氢解制1,2-丙二醇催化性能的研究

郝顺利^1,2,
彭伟才¹,
赵宁¹,
肖福魁¹,
魏伟^1,,
孙予罕^1,3,
李海⁴

1.
中国科学院山西煤炭化学研究所煤转化国家重点实验室, 山西太原 030001;
2.
中国科学院研究生院, 北京 100049;
3.
中国科学院上海高等研究院低碳能源转化中心, 上海 201203;
4.
重庆理工大学化学化工学院重庆 400054

详细信息

通讯作者:
魏伟, Tel: 0351-4049612, E-mail: weiwei@sxicc.ac.cn。

中图分类号: TQ032
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出版历程
- 收稿日期: 2011-05-19
- 修回日期: 2011-08-23
- 刊出日期: 2012-05-31

Hydrogenolysis of glycerol to 1,2-propanediol over various supported Cu catalysts

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3.
Low Carbon Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China;
4.
Department of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China

摘要

摘要: 采用等体积浸渍法合成了一系列不同载体负载的Cu基催化剂,并研究了其在甘油氢解反应中的催化性能。借助X射线衍射(XRD)、程序升温还原(H₂-TPR)和氨气程序升温脱附(NH₃-TPD)等手段对催化剂进行了表征,同时考察了反应温度、反应压力、反应时间和催化剂重复使用次数对其催化性能的影响。结果表明,载体对催化剂反应性能影响较大,且甘油氢解反应需要适当的酸性;当在催化剂8Cu/γ-Al₂O₃用量为反应原料质量的2.5%、反应温度513 K、反应压力6 MPa、反应时间6 h、反应原料为质量分数为10%的甘油水溶液的条件下,其催化效果最优,甘油转化率最高为88.4%,1,2-丙二醇的选择性可达到86.2%,且催化剂显示了良好的稳定性。
- 载体 /
- 铜催化剂 /
- 甘油氢解 /
- 1,2-丙二醇
Abstract: Supported Cu catalysts were prepared by wetness impregnation method and used in the hydrogenolysis of glycerol to l,2-propanediol. The catalysts were characterized by means of XRD, H₂-TPR and NH₃-TPD and the influence of temperature, pressure, reaction time and catalyst reusing on its catalytic activity in glycerol hydrogenolysis was investigated. The results showed that the catalytic activity is strongly dependent on the support and proper acidity is essential for the hydrogenolysis. 8Cu/γ-Al₂O₃ catalyst exhibits high activity and stability; after reaction over it for 6 h under the optimal reaction conditions of 513 K, 6 MPa, catalyst amount of 2.5%, with 10% glycerol aqueous solution as feed, the conversion of glycerol and the selectivity to 1,2-propanediol reach 88.4% and 86.2%, respectively.
- support /
- Cu catalyst /
- glycerol hydrogenolysis /
- 1,2-propanediol

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