蜂窝陶瓷基催化剂的制备及贫氧条件下的催化氧化活性  

Preparation of honeycomb ceramics matrix catalysts and their catalytic oxidation activity in lean oxygen

作　　者：李卫东 付鹏兵 李俊 朱吉钦[2] LI Wei-dong;FU Peng-bing;LI Jun;ZHU Ji-qin(Shanxi Lu＇an Coal-based Clean Energy Co.,Ltd.,Changzhi 046200,China;State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]山西潞安煤基清洁能源有限责任公司,山西长治046200 [2]北京化工大学化工资源有效利用国家重点实验室,北京100029

出　　处：《现代化工》2018年第7期141-144,共4页Modern Chemical Industry

摘　　要：以堇青石蜂窝陶瓷载体为基体,拟薄水铝石为过渡涂层,Pt-Pd双元贵金属为活性组分,采用不同助剂配比及制备工艺得到系列蜂窝陶瓷基结构化催化剂。通过催化剂的XRD和SEM结构表征,以及甲苯为模型化合物的催化氧化活性评价结果,确定了活性组分负载方法、贵金属负载量、助剂质量比及负载量和煅烧条件。最终以贫氧条件下的费-托合成脱碳塔尾气为研究对象,考察了催化剂的催化氧化活性,结果表明,制得的催化剂在贫氧条件下对脱碳塔尾气中的烃类转化率大于95%,达到环保排放要求。A series of honeycomb ceramics matrix structuring catalysts are prepared by different auxiliary ratios and preparation processes,through using cordierite honeycomb ceramics supporter as substrate,pseudo-boehmite as transition coating and Pt-Pd binary noble metal as active ingredients. The as-made catalysts are characterized via XRD and SEM.The loading method for active ingredients,the loading amount of noble metals,the mass and loading amount of auxiliaries and the calcinations conditions for the catalysts are determined by their activity evaluation results in the catalytic oxidation using toluene as model compound.The catalytic oxidation activity of the catalyst is investigated through treating with the tail gas from Fischer-Tropsch synthesis decarbonizing tower under lean oxygen conditions. It is found that the conversion rate of hydrocarbon in the tail gas can exceed 95% over the as-prepared catalyst in the lean oxygen atmosphere.

关 键 词：堇青石蜂窝陶瓷 Pt-Pd 脱碳塔尾气 贫氧 

分 类 号：TQ032.4[化学工程]