催化材料

Synthesis of diphenyl carbonate by oxidative carbonylation over palladium loaded MnOx-based bimetallic oxide catalysis

  • Wei Su ,
  • Linfeng Zhang ,
  • Qingyang Lü ,
  • Yuyan Xia ,
  • Hua Yuan
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  • Key Laboratory for Green Chemical Process of Ministry of Education,Wuhan Institute of Technology School of Chemistry and Environmental Engineering,Wuhan,430205,China

Received date: 2019-03-19

  Online published: 2020-06-10

Abstract

The Mn-doped W,V and Bi bimetallic oxide supports were prepared by co-precipitation method.PdCl2 was used as the active component to prepare supported catalysts for synthesis of DPC by heterogeneous catalytic oxidation of phenol.The structure and properties were characterized by means of gas chromatography,X-ray diffraction,hydrogen temperature programmed reduction and X-ray photoelectron spectroscopy etc..Results showed that with the increase of tungsten-manganese doping ratio and calcination temperature,MnO grew into Mn3O4 grains gradually and infiltrated into the lattice of MnOx.Finally,the catalytic activity was best and the yield of DPC was 5.20% at a doping ratio(amount-of-substance ratio) of 1:1 and calcination at 600 ℃.For vanadium manganese oxide,higher calcination temperature will destroy the integrity of the crystal form,and formation of MnO2 at a doping ratio of 1:5 at 400 ℃ can significantly improve the property of activity,and the yield of DPC was 10.46%.The bismuth-manganese bimetallic oxide catalyst with doping ratio of 1:5 and calcination at 400 ℃ had the best catalytic effect,the one-way yield of DPC was 13.13%.

Cite this article

Wei Su , Linfeng Zhang , Qingyang Lü , Yuyan Xia , Hua Yuan . Synthesis of diphenyl carbonate by oxidative carbonylation over palladium loaded MnOx-based bimetallic oxide catalysis[J]. Inorganic Chemicals Industry, 2019 , 51(9) : 91 -96 . DOI: 10.11962/1006-4990.2018-0568

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