The system Pd/AC/ Ce(OAC)3 /BQ(benzoquinone), in combination with tetrabutylammonium bromide(TBAB) as a surfactant agent is an efficient catalyst for the oxidative carbonylation of phenol to diphenyl Carbonate(DPC). The existence of water has a significant effect on the synthesis of diphenyl carbonate by the oxidative carbonylation of phenol. It can be deduced that the critical value of water content is 1.3wt% by experiments. Based on the XRD results, active components in the catalyst have agglomerated to big crystal with the existence of water, which makes catalyst deactivated. Based on the XPS results, water hindered the recycle of Pd(0) to Pd(?), resulting in the increase of Pd(0), as well as the decrease of catalyst activity.

Effect of water on the synthesis of diphenyl carbonate by the oxidative carbonylation of phenol over Pd/AC

244th National Meeting (2012)

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