Catalyst for synthesizing diphenyl carbonate in phenol oxidative carbonylation as well as preparation method and application method of catalyst

Abstract

The invention relates to a catalyst for synthesizing diphenyl carbonate in phenol oxidative carbonylation as well as a preparation method and an application method of the catalyst. The catalyst comprises carrier rod-shaped nanometer CeO3 and an active component Pd compound, wherein the Pd compound is based on Pd, the weight ratio of the Pd to the CeO2 is 0.1: (10:100). The catalyst is used for synthesizing the diphenyl carbonate in the phenol oxidative carbonylation, solving the separation problem of a homogeneous Pd catalyst and overcoming the shortcomings that a conventional heterogeneous catalyst system is low in reaction rate and long in reaction time, and the like; meanwhile, by using the catalyst, the using amount of additives is reduced in the phenol oxidative carbonylation, only one additive is used, and the defects such as large using amount of the additives, multiple varieties, high difficulty in aftertreatment and high cost of a conventional reaction system are overcome. In addition, according to the method, the catalyst has relatively high activity all the time in the reaction process and can be repeatedly used.

Description

technical field

[0001] The invention relates to a rod-shaped nano CeO 2 Loaded Pd catalyst and preparation method thereof, specifically, relate to a kind of rod-shaped nano-CeO for phenol and carbon monoxide, oxygen reaction synthesis diphenyl carbonate 2 Supported Pd catalyst and preparation method thereof. Background technique

[0002] Diphenyl carbonate is non-toxic and non-polluting. It is an important environmental chemical product that can be used to synthesize many important medicines, pesticides and other organic compounds and polymer materials; it can also be used in the plastics industry to manufacture polycarbonate and p-hydroxy Methyl benzoate, monoisocyanate, diisocyanate, etc. In recent years, since polycarbonate is widely used in electronic appliances, machinery, aviation, transportation, construction, agriculture, textile, medical and other fields, the supply exceeds demand, so the demand for its raw material diphenyl carbonate has greatly increased, making...

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