分會(huì)

第二十分會(huì)：固體表界面化學(xué)與多相催化

摘要

Cu/CxNy材料二氧化碳電催化還原中的應(yīng)用研究 李洪林1，曾景斌2,*，閻子峰1,* 1中國(guó)石油大學(xué)（華東）重質(zhì)油國(guó)家重點(diǎn)實(shí)驗(yàn)室，山東省青島市長(zhǎng)江西路66號(hào)，266580 2中國(guó)石油大學(xué)（華東）理學(xué)院，山東省青島市長(zhǎng)江西路66號(hào)，266580 *Email: zfyancat@upc.edu.cn xmuzjb@163.com 二氧化碳電催化還原反應(yīng)能夠利用可持續(xù)能源將CO2轉(zhuǎn)化為一系列碳?xì)浠衔?，是未來能源領(lǐng)域一個(gè)重要的發(fā)展方向。目前，Cu是唯一能夠催化CO2RR產(chǎn)生一些列碳?xì)浠衔锏慕饘俅呋瘎?，但是其?duì)特定產(chǎn)物的選擇性差。我們利用CuNCN熱分解制備了一系列碳氮載體負(fù)載的Cu基催化劑，通過不同的焙燒溫度調(diào)節(jié)的氮碳載體中氮的種類與數(shù)量，隨著焙燒溫度的升高以及載體中吡啶氮數(shù)量的降低，CO2RR產(chǎn)物中CH4選擇性降低，C2H4和CH3CH2OH選擇性升高，CuNCN-600在CO2RR中對(duì)C2H4、CH3CH2OH法拉第效率總和可達(dá)60%以上，表明利用載體調(diào)節(jié)Cu基催化劑CO2RR的選擇性是可行的。 Fig. 1 (a) SEM image CuNCN-600; (b) Faraday efficiency of CuNCN-600 in CO2RR 關(guān)鍵詞：Cu/NC；二氧化碳電催化還原；選擇性 參考文獻(xiàn) [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..

關(guān)鍵詞

Cu/NC;二氧化碳電催化還原;選擇性

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