Pt-Pd/MnCo_(2)O_(4)复合型催化剂的制备及其对低碳烃等有机物的催化燃烧性能  

PREPARATION OF Pt-Pd/MnCo_(2)O_(4) COMPOSITE CATALYST AND ITS CATALYTIC COMBUSTION PERFORMANCE FOR LOW CARBON HYDROCARBONS AND OTHER ORGANIC COMPOUNDS

作　　者：刘世达 侯栓弟 刘淑鹤 赵磊 刘忠生 Liu Shida;Hou Shuandi;Liu Shuhe;Zhao Lei;Liu Zhongsheng(SINOPEC(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian,Liaoning 116045)

机构地区：[1]中石化(大连)石油化工研究院有限公司,辽宁大连116045

出　　处：《石油炼制与化工》2024年第10期94-101,共8页Petroleum Processing and Petrochemicals

基　　金：中国石油化工股份有限公司合同项目(322068)。

摘　　要：在涂覆氧化铝的陶瓷蜂窝载体上,通过化学还原法原位构建MnCo_(2)O_(4)纳米小球颗粒使其生长于氧化铝涂层,制备出两种Pt-Pd/MnCo_(2)O_(4)复合型催化燃烧催化剂MnCo-2、MnCo-3。MnCo-2的贵金属含量比国外参比剂少约44%、比国产参比剂少约16%,乙烷等低碳烃氧化活性与国外参比剂相当,其乙烷转化率为99%时的氧化转化温度(T_(99))、丙烷T_(99)、甲烷转化率为90%时的氧化转化温度(T_(90))分别为440,380,460℃,比国产参比剂低60℃,且在累积800 h的测试中性能稳定。MnCo-3的贵金属含量比国外参比剂少约61%、比国产参比剂少约41%,其试剂总成本约比国产参比剂低38%,其乙烷T 99为475℃,比国产参比剂低25℃。Chemical reduction reaction between potassium permanganate and manganese nitrate was employed to directly generate MnCo_(2)O_(4) spinel on a monolith coated with alumina,and two kinds of Pt-Pd/MnCo_(2)O_(4) composite combustion catalysts,named MnCo-2 and MnCo-3,were prepared.MnCo-2 had approximately 44%less noble metal content than the foreign reference sample,and about 16% less than the domestic reference sample.Its activity in the oxidation of low carbon hydrocarbons such as ethane was comparable to that of the foreign reference sample.The oxidation conversion temperature T_(99) for ethane,T_(99) for propane,and T_(90) for methane were 440,380 and 460℃,respectively,which were approximately 60℃ lower than that of the domestic reference sample,and the performance was stable in the cumulative 800 h test.MnCo-3 had approximately 61% less noble metal content than the foreign reference sample and about 41% less than the domestic reference sample.Its total reagent cost was approximately 38% lower than that of the domestic reference sample,and the ethane T 99 conversion temperature was 475℃,which was 25℃ lower than that of the domestic reference sample.

关 键 词：低碳烃 催化燃烧 贵金属 非贵金属氧化物 复合型催化剂 

分 类 号：TQ426[化学工程]