Conversão química de no e co sobre catalisadores à base de óxidos de cobalto ou de ferro

Química Nova

Andreza A. Longati²  Willian C. Ferreira²  Cristiane M. Finzi Quintão²  Maikel L. Maloncy¹  Marcelo S. Batista² 

[1] ,Universidade Federal de São João Del Rei Departamento de Engenharia Química e Estatística Ouro Branco MG ,Brasil

关键词: catalyst;    nitrogen oxide;    iron oxide;   

DOI  :  10.5935/0100-4042.20140038

来源: SciELO

【 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】

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