Synthesis process of trimethylene carbonate from 1,3-propanediol and urea by heterogeneous catalysis

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Abstract

The invention relates to the synthesis of trimethylene carbonate by reaction of alcoholysis of urea with 1,3-propanediol in liquid phase catalyzed by a mixed metal oxide comprising Zn and La. The catalyst used in the process of the invention is an intimate mixture of Zinc oxide (ZnO) and Lanthanum oxide (La2O3) leading, according to the molar ratio La:Zn ranging from 0.01 to 1.5, to a new mixed metal oxide comprising a solid solution of Lanthanum or Zinc in Zinc oxide or Lanthanum oxide, respectively, or to a spinel like structure when the molar ratio La/Zn is equal to 1. The solid mixed catalyst La:Zn improves both yield and selectivity of the reaction and makes easier the further step of separating the compounds of the reaction medium with an improved recovering rate in trimethylene carbonate.

Classe Tecnologica

C - Chemistry and Metallurgy

Patent Office

European Patent Office

Numero Deposito

EP 2873661

Anno Deposito

2013

Anno Concessione

2015

Inventori Pugliesi

Tutti gli inventori

  • Dubois Jean-luc
  • Aresta Michele
  • Dibenedetto Angela
  • Di Bitonto Luigi

Titolari pugliesi

  • Non ci sono titolari pugliesi

Tutti i titolari

  • ARKEMA FRANCE