中国化学会第32届学术年会
重要日期
注册参加会议 登录会议管理
线上墙报
Cu/CxNy材料二氧化碳电催化还原中的应用研究
李洪林 曾景斌 阎子峰*

分会

第二十分会:固体表界面化学与多相催化

摘要

Cu/CxNy材料二氧化碳电催化还原中的应用研究 李洪林1,曾景斌2,*,阎子峰1,* 1中国石油大学(华东)重质油国家重点实验室,山东省青岛市长江西路66号,266580 2中国石油大学(华东)理学院,山东省青岛市长江西路66号,266580 *Email: zfyancat@upc.edu.cn xmuzjb@163.com 二氧化碳电催化还原反应能够利用可持续能源将CO2转化为一系列碳氢化合物,是未来能源领域一个重要的发展方向。目前,Cu是唯一能够催化CO2RR产生一些列碳氢化合物的金属催化剂,但是其对特定产物的选择性差。我们利用CuNCN热分解制备了一系列碳氮载体负载的Cu基催化剂,通过不同的焙烧温度调节的氮碳载体中氮的种类与数量,随着焙烧温度的升高以及载体中吡啶氮数量的降低,CO2RR产物中CH4选择性降低,C2H4和CH3CH2OH选择性升高,CuNCN-600在CO2RR中对C2H4、CH3CH2OH法拉第效率总和可达60%以上,表明利用载体调节Cu基催化剂CO2RR的选择性是可行的。 Fig. 1 (a) SEM image CuNCN-600; (b) Faraday efficiency of CuNCN-600 in CO2RR 关键词:Cu/NC;二氧化碳电催化还原;选择性 参考文献 [1] D. Ressnig, G. Clavel, N. Scharnagl, M. Antonietti, Part. Part. Syst. Charact. 2014, 31, 557–560. Preparation of Cu/CxNy and their application in electrocatalytic reduction of carbon dioxide Honglin Li1, Jingbin Zeng2,*, Zifeng Yan1,* 1 State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao City, Shandong Province, 266580 2 College of Science, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao City, Shandong Province, 266580 *Email: zfyancat@upc.edu.cn xmuzjb@163.com Carbon dioxide electrocatalytic reduction reaction (CO2RR) can use sustainable energy to convert CO2 into a series of hydrocarbons, which is an important development direction in the future energy field. At present, Cu is the only metal catalyst that can catalyze CO2RR to produce a series of hydrocarbons, but its selectivity to specific products is poor. We used CuNCN pyrolysis to prepare a series of Cu-based catalysts supported on carbonitride. The types and amounts of nitrogen in the nitrogen-carbon carriers were adjusted by different calcination temperatures. As the calcination temperature increased and the amount of pyridine nitrogen in the carrier decreased, the selectivity of CH4 in CO2RR products decreased, while the selectivity of C2H4 and CH3CH2OH increased. Especially, the sum faraday efficiency of C2H4 and CH3CH2OH could reach 60%, indicating that it is feasible to use the support to adjust the selectivity of Cu-based catalyst CO2RR..

关键词

Cu/NC;二氧化碳电催化还原;选择性

线上墙报仅限年会已缴费参会代表观看。

您还没有登录,请您先 点击这里登录