负载型过渡金属氧化物催化剂催化分解臭氧性能研究  

Study on catalytic performance of supported transition metal oxide catalyst for ozone decomposition

作　　者：鹿靖麟 王胜[1] 赵琨[1,2] 王婷 倪长军 汪明哲[1] 王树东[1] LU Jing-lin;WANG Sheng;ZHAO Kun;WANG Ting;NI Chang-jun;WANG Ming-zhe;WANG Shu-dong(Dalian National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大连化学物理研究所,洁净能源国家实验室,辽宁大连116023 [2]中国科学院大学,北京100049

出　　处：《燃料化学学报》2021年第7期1014-1021,共8页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(U20A20132);国家重点研发计划(2016YFC0204302);大连化物所创新研究基金项目(DICPI201937)资助。

摘　　要：通过浸渍法制备了γ-Al_(2)O_(3)负载镍、锰、钴等不同金属氧化物催化剂,在25℃、200000 mL/(gcat·h)的空速条件下,研究了其臭氧催化分解性能。结果表明,10%NiO/γ-Al_(2)O_(3)催化剂催化活性最佳,20 h内臭氧转化率高于96%。借助XRD、XPS、TEM、SEM-EDS、H_(2)-TPR等表征手段,揭示出在NiO/γ-Al_(2)O_(3)催化剂表面形成的镍铝尖晶石结构可能是其优良臭氧分解性能的内在原因。此外,揭示出在不同过渡金属氧化物负载型催化剂上臭氧分解机理不同,相关研究为镍、锰等过渡金属氧化物催化剂催化分解臭氧的反应机理提供了新思路,并为开发高效的臭氧分解催化剂提供了指导。In this paper,γ-Al_(2)O_(3) supported nickel,manganese,cobalt,and other metal oxide catalysts were prepared by the impregnation method respectively,and its ozone catalytic decomposition performance was studied at 25℃under a WHSV of 200000 mL/(gcat·h).The results showed that 10%NiO/γ-Al_(2)O_(3) catalyst demonstrates superior catalytic activity,and the ozone conversion rate is higher than 96%within 20 h.According to the characterizations of XRD,XPS,TEM,SEM-EDS and H_(2)-TPR,its excellent ozone may be attributed to the formation of NiAl2O4 spinel on the surface of NiO/γ-Al_(2)O_(3) catalyst.Furthermore,the mechanism of ozone decomposition on different transition metal oxide catalysts is divergent.The related study sheds new light on the reaction mechanism of ozone catalytic decomposition over transition metal oxides such as nickel and manganese,it also provides the guidelines for the development of efficient ozone decomposition catalysts.

关 键 词：臭氧 催化分解 催化剂 金属氧化物 

分 类 号：TQ423.93[化学工程]