Catalytic activity of transition metals in the hydrogen peroxide decomposition

Quimica nova

Bossa-Benavides, Luis. F.¹  Castillo, Eliana¹  Carriazo, José G.¹ 

[1] Universidad Nacional de Colombia, Bogotá, Colombia

关键词: hydrogen peroxide;    transition metals;    catalysis by metals.;   

DOI  :  10.1590/S0100-40422012000600006

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This paper compares the catalytic activities of some transition metal ions (Fe3+, Co2+, Cu2+, Ni2+, Zn2+) in the H2O2 decomposition in homogenous and heterogeneous processes, including solid mixed systems (Fe-Cu-Co/Al2O3, Fe-Cu/Al2O3, Fe-Co/Al2O3 and Co-Cu/Al2O3). The solids were characterised by X-ray diffraction to explore evolution of phases or possible changes. Different trends of the catalytic activity were observed: in homogeneous medium the most active species was Fe3+, whereas in heterogeneous one the higher activities were shown for Co/Al2O3 and Co-Cu/Al2O3. A strong cooperative effect for the Co-Cu/Al2O3 system was observed, which can be considered as a new catalyst of interest for this type of reactions.

【 授权许可】

CC BY