SiO_(2)气凝胶负载过渡金属氧化物催化分解N2O的研究  

Study on catalytic decomposition of N2O by SiO_(2) aerogel supported transition metal oxides

作　　者：王逸飞 王亚涛 王新承 马小丰 李翠清[1] 王虹[1] 宋永吉[1] WANG Yi-fei;WANG Ya-tao;WANG Xin-cheng;MA Xiao-feng;LI Cui-qing;WANG Hong;SONG Yong-ji(Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology,College of New Materials and Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;Coal Chemical R&D Center,Tangshan Kailuan Chemical Technology Co.,Ltd.,Tangshan 063006,China)

机构地区：[1]北京石油化工学院新材料与化工学院,燃料清洁化及高效催化减排技术北京市重点实验室,北京102617 [2]唐山开滦化工科技有限公司煤化工研发中心,河北唐山063006

出　　处：《现代化工》2022年第9期134-140,共7页Modern Chemical Industry

基　　金：国家自然科学基金项目(20176012,21076025)。

摘　　要：以二氧化硅气凝胶为载体,采用等体积浸渍法制备了一系列不同负载量的过渡金属氧化物M/SiO_(2)-ag(M=Ni、Co、Cu、Fe、Mn、Zn)催化剂,利用XRD、BET、H_(2)-TPR等对催化剂进行表征,研究了SiO_(2)气凝胶负载过渡金属氧化物分解N_(2)O的催化性能。结果表明,负载NiO的样品具有最高的催化分解活性,当NiO负载量为27%时催化活性最佳,可在451℃完全转化N_(2)O;在455℃下对Ni_(27)/SiO_(2)-ag进行100 h寿命实验,催化活性未下降,表明Ni_(27)/SiO_(2)-ag具有较好的热稳定性。Using SiO_(2) aerogel as the carrier,a series of transition metal oxides catalysts,M/SiO_(2)-ag(M=Ni,Co,Cu,Fe,Mn,Zn),with different loadings are prepared via an equal volume impregnation method.The prepared catalysts are analyzed by means of XRD,BET and H_(2)-TPR.Their catalytic performance for the decomposition of N_(2)O is studied.Among them,the sample loaded with NiO has the highest catalytic decomposition activity.The catalyst has the best catalytic activity when the loading amount of NiO is 27%,over which N_(2)O can completely be converted at 451℃.The catalytic activity of Ni_(27)/SiO_(2)-ag does not drop after 100 h of life test at 455℃,indicating that Ni_(27)/SiO_(2)-ag has a good thermal stability.

关 键 词：氧化亚氮 催化分解 过渡金属氧化物 SiO_(2)气凝胶 催化剂 

分 类 号：TQ426[化学工程]