Chemical conversion of no and co on catalysts based on cobalt or iron oxides

Quimica nova

Maloncy, Maikel L.¹  Longati, Andreza A.²  Ferreira, Willian C.²  Quintão, Cristiane M. Finzi²  Batista, Marcelo S.² 

[1] The Hague University of Applied Sciences, The Hague, The Netherlands;Universidade Federal de São João Del Rei, Ouro Branco, Brasil

关键词: catalyst;    nitrogen oxide;    iron oxide.;   

DOI  :  10.5935/0100-4042.20140038

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Cobalt or iron oxides supported or not on zeolite Hbeta were prepared and evaluated in the reduction reaction of NO by CO in presence of O2, SO2 or H2O. XRD results evidenced the Hbeta structure and the formation of Co3O4 and Fe2O3. TPR-H2 analysis showed complete reduction of cobalt oxide at lower temperatures than for iron oxide. The catalysts are quite active and the activity depends on the reaction temperature. The highest conversions rates were observed for pure iron oxide, which can be a relatively low cost catalyst for reduction of NO by CO, with high selectivity towards the N2 formation.

【 授权许可】

CC BY