期刊
JOURNAL OF POROUS MATERIALS
卷 17, 期 1, 页码 107-113出版社
SPRINGER
DOI: 10.1007/s10934-009-9270-y
关键词
Encapsulation; Zeolite-Y; ZSM-5; Hydrogen peroxide decomposition; Oxidation of phenol; Catechol and hydroquinone formation
资金
- Bangalore Institute of Technology, Bangalore
- Department of Physics, I. I. Sc., Bangalore
Cobalt(II), Copper(II) and Zinc (II) complexes of 2-methylbenzimidazole (Mebzlh) encapsulated in the super cages of zeolite-Y and ZSM-5 have been synthesized by flexible ligand method and characterized by various physico-chemical measurements. The catalytic activity of encapsulated complexes was investigated for the decomposition of H2O2 and for the hydroxylation of phenol using H2O2 as an oxidant. The hydroxylation of phenol yielded catechol and hydroquinone as the major products. All catalysts show good selectivity for diphenol products. The results showed that conversion of phenol varies in the order [Cu(Mebzlh)]-Y > [Cu(Mebzlh)]-ZSM-5 > [Zn(Mebzlh)]-Y > [Co(Mebzlh)]-Y > [Zn(Mebzlh)]-ZSM-5 > [Co(Mebzlh)]-ZSM-5 after 6 h of reaction time.
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