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CuO/CexZr1-xO2催化剂催化CO氧化性能的研究
黄金花1,2,3, 叶丽萍1,2,3, 李帅1,2,3
1.上海化工研究院有限公司, 上海 200062;2.聚烯烃催化技术与高性能材料国家重点实验室, 上海 200062;3.上海市聚烯烃催化技术重点实验室, 上海 200062
摘要:
采用共沉淀法制备CexZr1-xO2载体,等体积浸渍法制备CuO/CexZr1-xO2催化剂,考察载体中CeO2与ZrO2质量比(mCeO2mZrO2)和CuO负载量对CuO/CexZr1-xO2催化剂结构及物化性能的影响.采用X射线衍射(XRD)、比表面积及孔容积测试(BET)、氢气程序升温还原(H2-TPR)、一氧化碳程序升温还原(CO-TPR)等方法对CuO/CexZr1-xO2催化剂进行表征,结果表明:当mCeO2mZrO2为4∶1时,CuO负载量为10%(质量分数)时,10% CuO/Ce0.815Zr0.185O2催化剂具有较大的比表面积和孔容积,较好的Cu物质分散度,以及较好的还原性能和CO氧化性能.因此,在催化CO氧化反应中,10% CuO/Ce0.815Zr0.185O2催化剂表现出较优的活性,在常压下,CO完全转化温度低至80℃.
关键词:  CuO/CexZr1-xO2  质量比  CuO负载量  CO氧化
DOI:10.3969/J.ISSN.1000-5137.2017.06.013
分类号:TQ032.41
基金项目:上海市自然科学基金(15ZRl421500)
The study on catalytic performance of CuO/CexZr1-xO2 catalyst in carbon monoxide oxidation
Huang Jinhua1,2,3, Ye Liping1,2,3, Li Shuai1,2,3
1.Shanghai Research Institute of Chemical Industry Co., Ltd., Shanghai 200062, China;2.State Key Laboratory of Polyolefin and Catalysts, Shanghai 200062, China;3.Shanghai Key Laboratory of Catalyst Technology for Polyolefin, Shanghai 200062, China
Abstract:
A series of CuO/CexZr1-xO2 samples were prepared by incipient-wetness impregnation method with CexZr1-xO2 used as the catalyst carrier which was synthesized by co-precipitation method.The influences of the mass ratio of CeO2:ZrO2 and CuO loading were investigated using catalytic activity test,XRD,BET,H2-TPR,and CO-TPR techniques.The results revealed that with a CeO2:ZrO2 mass ratio of 4:1 and 10% CuO loading,10%CuO/Ce0.815Zr0.185O2 catalyst showed a larger surface area and pore volume,a higher dispersity of CuO particles,better reduction property and CO oxidation property.Thus,10% CuO/Ce0.815Zr0.185O2 catalyst exhibited a high catalytic activity in the carbon monoxide oxidation with 100% CO conversion at the temperature as low as 80℃ under atmospheric pressure.
Key words:  CuO/CexZr1-xO2  mass ratio  CuO loading  carbon monoxide oxidation