负载型Pt-Fe/Al_2O_3催化剂用于室温催化氧化甲醛  

Pt-Fe/Al_2O_3 catalysts for removal of formaldehyde at ambient temperature

作　　者：崔维怡[1] 王圣公 王琳琳 戴俊琦 谭乃迪[2] CUI Weiyi;WANG Shenggong;WANG Linlin;DAI Junqi;TAN Naidi(The Key Laboratory of Chemical Cleaner Production Technology of Jilin Province,Jilin Institute of Chemical Technology,Jilin 132022,Jilin,China;College of Chemical and Pharmaceutical Engineering,Jilin Institute of Chemical and Technology,Jilin 132022,Jilin,China)

机构地区：[1]吉林化工学院化工清洁生产技术吉林省高校重点实验室,吉林吉林132022 [2]吉林化工学院化学与制药工程学院,吉林吉林132022

出　　处：《化工进展》2019年第3期1427-1433,共7页Chemical Industry and Engineering Progress

基　　金：吉林市科技创新发展计划(201750211);吉林省教育厅‘十三五’科学技术研究规划项目(JJKA20180559KJ)

摘　　要：采用胶体沉积法制备不同载体(Ni2O_3、Co_3O_4、TiO_2、Al_2O_3)的Pt-Fe/MeOx催化剂用于甲醛室温催化氧化。活性测试表明,以γ-Al_2O_3为载体的Pt-Fe/Al_2O_3催化剂具有较高的催化活性,在25℃时甲醛的转化率可达到100%,而且Pt-Fe/Al_2O_3催化剂还表现出良好的稳定性。采用各种表征技术对Pt-Fe/Al_2O_3的形貌、价态及氧化还原性等物理化学性质进行了研究,结果表明:Pt-Fe/Al_2O_3催化剂中Pt物种和Fe物种在Al_2O_3载体的表面上均匀分散;二者之间存在着较强的相互作用,在Al_2O_3载体的表面上形成一些类似Pt-O-Fe活性物种,有效促进了Pt-Fe/Al_2O_3催化性能,从而显示出较高的氧化活性。Various supported platinum-iron catalysts Pt-Fe/MeOx (MeOx=Ni2O3, Co3O4, TiO2, Al2O3) were prepared by colloid-deposition method, and their catalytic properties were investigated through oxidation of formaldehyde at ambient temperature. Activity result shows that the γ-Al2O3 supported Pt-Fe catalyst exhibits the highest activity and long-term stability, which had achieved complete oxidation of HCHO at 25℃. Characterizations were performed to investigate the physicochemical properties of the Pt-Fe/Al2O3 catalyst including its morphology, chemical states and redox ability. The results indicated that the adopted preparation process could lead to an uniform distribution of the Pt species and the Fe species on the surface of the γ-Al2O3 support. And the enhanced catalytic activity of the Pt-Fe/Al2O3 catalyst might be mainly attributed to the presence of the strong interactions between the Pt and the Fe species, which resulted in the formation of the Pt-O-Fe active sites.

关 键 词：甲醛 催化 氧化 活性 

分 类 号：TQ426[化学工程]