Inorganic Chemicals Industry ›› 2021, Vol. 53 ›› Issue (2): 94-99.doi: 10.11962/1006-4990.2020-0110

• Catalytic Materials • Previous Articles     Next Articles

Synthesis of dihydroxybenzenes by hydroxylation of phenol over Cu/ MS-1 with mesoporous

Yu Tianhua(),Huang Qipeng,Situ Cheng   

  1. School of Life Sciences,Guizhou Normal University,Guiyang 550001,China
  • Received:2020-08-27 Online:2021-02-10 Published:2021-02-06

Abstract:

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

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