Ethylene Glycol Acetate by Catalytic Oxidation of Ethylene-A One-Step Process Involving Simultaneous Feed of Oxygen and Ethylene into The Pd-Cu Catalytic System
陆广中, 黄国章, 郭雅珠, et al. Ethylene Glycol Acetate by Catalytic Oxidation of Ethylene-A One-Step Process Involving Simultaneous Feed of Oxygen and Ethylene into The Pd-Cu Catalytic System[J]. CIESC Journal, 1986, (3).
陆广中, 黄国章, 郭雅珠, et al. Ethylene Glycol Acetate by Catalytic Oxidation of Ethylene-A One-Step Process Involving Simultaneous Feed of Oxygen and Ethylene into The Pd-Cu Catalytic System[J]. CIESC Journal, 1986, (3).DOI:
Preparation of ethylene glycol acetate from ethylene using the catalytic system
PdCl2-CuCl2-Cu(OAc)2 in HAc solution
usually involves two steps -acetoxylation and regeneration of catalyst. In this paper
a one-step process has been studied
with oxygen and ethylene introduced simultaneously into a single reactor. It was observed that there must be sufficient partial pressure of oxygen to oxidize Cu+ to Cu++
by keeping oxygen concentration at 8-10% in the raw binary gas mixture of oxygen and ethylene
whereby the activity of the catalytic system could be maintained without formation of CuCl2 residue. By using nitrogen as a diluent
the ratio of O2/C2H4 could be kept in the non-explosive range
and it was found further that 95% of the ethylene in the raw gas could be converted into ethylene glycol monoacetate and diacetate.