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Synthesis of dihydroxybenzenes by hydroxylation of phenol over Cu/ MS-1 with mesoporous
Received date: 2020-08-27
Online published: 2021-02-06
The mesoporous S-1（MS-1） supporter was synthesized by sol-gel method with cetyltrimethyl-ammonium bromide（CTAB） as template.Cu/MS-1 catalyst was prepared by impregnation method,and then it was used to synthesis dihydroxy-benzenes directly by hydroxylation phenol with H2O2 as oxidation.The experimental conditions were optimized by orthogonal experimental[L25（56）].The structure and properties of catalyst were characterized by means of X-ray photoelectron spectro-scopy（XPS）,N2 adsorption-desorption and H2 temperature programmed reduction et al.The results showed that Cu/ MS-1 with mesoporous promised to rapid diffusion in pore of reactants and products,and was better catalytic performance than that of Cu/S-1.Under optimal conditions,the 5.5% Cu/MS-1 with the highest relative mass fraction of highly dispersed CuO pos-sessed the best catalytic activity among the catalysts; the yield of dihydroxybenzenes was 47.2% with the selectivity of 86.7%.The catalysts with mesoporous and MFI structure had a good sustainability,and its dihydroxybenzenes yield was 43.2% after recycle 5 times.
Key words： dihydroxybenzenes; CTAB; catalyst; phenol; hydrogen peroxide
Tianhua Yu , Qipeng Huang , Cheng Situ . Synthesis of dihydroxybenzenes by hydroxylation of phenol over Cu/ MS-1 with mesoporous[J]. Inorganic Chemicals Industry, 2021 , 53(2) : 94 -99 . DOI: 10.11962/1006-4990.2020-0110
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