JIANG Fan,LI Shangzhi,ZUO Junjun,et al.Study on the Use of Metal Modified CuMn Catalyst for Low Temperature Catalytic Oxidation of CO[J].Journal of Chengdu University of Information Technology,2026,41(02):260-264.[doi:10.16836/j.cnki.jcuit.2026.02.018]
金属改性铜锰催化剂用于一氧化碳低温催化氧化的研究
- Title:
- Study on the Use of Metal Modified CuMn Catalyst for Low Temperature Catalytic Oxidation of CO
- 文章编号:
- 2096-1618(2026)02-0260-05
- Keywords:
- CO low-temperature catalytic oxidation; co-precipitation; CuMn catalyst; hopcalite; metal modification
- 分类号:
- X701
- 文献标志码:
- A
- 摘要:
- 铜锰催化剂(CuMn催化剂)广泛用于一氧化碳(CO)低温催化氧化,为提高其催化性能,并研发优于商用催化剂的非贵金属催化剂,采用共沉淀法制备铈(Ce)、铝(Al)和锡(Sn)分别掺杂的CuMn复合氧化物催化剂,对比该系列催化剂与商用霍加拉特催化剂的性能,并通过多种表征手段考察金属掺杂对CuMn复合氧化物催化剂结构及CO低温催化氧化性能的影响。结果表明:Ce、Al和Sn掺杂的CuMn复合氧化物催化剂反应活性优于商用催化剂,CO转化率提升约20%,其中Sn掺杂的催化剂反应活性最高,在70 ℃下即可将CO完全氧化。结合多种催化剂表征手段发现Ce、Sn、Al掺入CuMn复合氧化物可以提高催化剂的氧化还原能力,并降低催化剂的结晶度,使更多铜氧化物、锰氧化物以无定形的形式存在,使金属改性的CuMn催化剂反应活性提升。
- Abstract:
- CuMn catalyst is widely used in low temperature catalytic oxidation of CO. In order to improve its catalytic performance and develop non-precious metal catalysts superior to commercial catalysts, the CuMn composite oxide catalysts doped with Ce, Al and Sn were prepared by co-precipitation method in this study, and the performance of these catalysts was compared with that of commercial Hopcalite catalysts. The effects of metal doping on the structure of CuMn composite oxide catalysts and the catalytic oxidation performance of CO at low temperature were investigated by various characterization methods. The results show that the reactivity of CuMn composite oxide catalysts doped with Ce, Al and Sn is superior to that of commercial catalysts, and the CO conversion rate is increased by about 20%, among which the Sn-doped catalyst has the highest reactivity, and CO can be completely oxidized at70 ℃. Combined with a variety of catalyst characterization methods, it was found that the addition of CuMn composite oxides of Ce, Sn and Al could improve the redox capacity of the catalyst, reduce the crystallinity of the catalyst, make more copper oxides and manganese oxides exist in the amorphous form, and improve the reaction activity of the metal-modified CuMn catalyst.
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备注/Memo
收稿日期:2024-10-14
基金项目:国家自然科学青年科学基金资助项目(42007188); 四川省自然科学基金资助项目(2022NSFSC1000)
通信作者:任红.E-mail:renhong@cuit.edu.cn