The Studies Of Catalysis And Chemical Reaction Engineering On Hydroesterification Of Ethylene To Synthesis Of Propionic Ester

Methyl formate becomes more and more important as a new source of carbon in the carbonyl synthesis. Methyl propionate is an important organic chemical raw material. Methyl propionate is synthesized by hydroesterification of ethylene with carbon monoxide and methanol in the studies during the past years. With the development of chemistry using methyl formate the study on synthesis of carboxylic ester by hydroesterification of olefins with methyl formate is becoming a focus in this field of research.This paper presents the studies of catalyst system, catalytic reaction process and its technic conditions, as well as catalytic reaction kinetic to the synthesis of methyl propionate by hydroesterification of ethylene with methyl formate. The process conditions for this reaction system are further discussed in the stirred vessel on the basis of studies about catalyst.The main contents of studies are:1. The activity of CH₃ONa, PdCl₂, Pd(oAc)2 and RuCl₃ on hydroesterification of ethylene with methyl formate are determined respectivly under presence of some solvents, certain ligands and promoters in the autoclave.lt is concluded that: the catalyst CH₃ONa shows no activity for synthesis of methyl propionate.The decarbonylation of methyl formate occurs if concentration of CH₃ONa is excessive.Some activity of PdCl₂ and Pd(oAc)2 on hydroeserification are demostrated under the presence of ligands Ph₃P and dppb in DME solvent. The yield of methyl propionate is 5.45%. The activity of RuCl₃ is the best on this reaction under...