MTPP-CeO_x-SiO_2催化分解NO的研究  

The Study of Catalytic Decomposition Reaction of Nitric Oxide on MTPP-CeO_-SiO_2

作　　者：程大典[1] 曹守镜[2] 江启温 周牧易 

机构地区：[1]厦门大学北学系 [2]厦门大学分析测试中心 [3]厦门大学化学系

出　　处：《厦门大学学报（自然科学版）》1991年第2期184-188,共5页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金

摘　　要：用密闭循环反应系统研究 MTPP-CeO_x-SiO_z(M=Co^(2+)、Ni^(2+)、Cu^(2+)催化分解No的性能。催化活性顺序是 NiTPP≈CoTPP>CuTPP。用原位 DRFTIRS 及 XPS 揭示了 MTPP-CeOx 催化分解NO经历了 NO 在中心金属上吸附活化的状态——M~* TPP(NO~*)。CeO_x 助催剂的电子给于性对改善 MTPP的催化活性起着关键作用。提出M~*TPP(NO~*)与气态或吸附在卟啉环上的NO分子形成二聚体中间过渡态的设想。The catalytic decomposition of nitric oxide was investigated on MTPP-CeOx-SiO2 (M= Co2+ ,Ni2+,Cu2+)by a closed circulating reactor. The activity order of the metalloporphyrins used in the present work was as follows : NiTPP≈ CoTPP > CuTPP. A species activated, M TPP (NO ) ,of NO adsorbed on central metal was found by in-situ DRFTIRS and XPS. The supply electrons property of CeOx should play a key role in improvement of catalytic activity of MTPP. Dimeric transition state, that M TPP (NO) link with NO in gas phase or adsorbed on porphyrin rings, was supposed.

关 键 词：一氧化氮 催化分解 MTPP 氧化铈 

分 类 号：O613.61[理学—无机化学]