Optimization of cyclical process for CO coupling regeneration reactions

Wang, Baowei; Ma, Xinbin; Xu, Genhui; Mao, Lanfang

doi:10.1016/s0098-1354(00)00409-9

Cited by 9 publications

(1 citation statement)

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“…Many articles have mentioned the possibility of oxalate synthesis through carbon monoxide coupling, − and the development of downstream products, such as ethylene glycol, − methyl glycolate, and glycolic acid, has begun to attract growing interest. Moreover, oxalic acid can also be produced through the hydrolysis of dimethyl oxalate (DMO).…”

Section: Introductionmentioning

confidence: 99%

Autocatalytic Kinetic Study of Dimethyl Oxalate Consecutive Hydrolysis

Xü

Zhao

et al. 2014

Ind. Eng. Chem. Res.

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The autocatalytic hydrolysis kinetics of dimethyl oxalate (DMO) was investigated in an isothermal batch reactor at 328.15–358.15 K. It was observed that DMO hydrolysis involved two reactions in series, with monomethyl oxalate (MMO) as an intermediate product. The results showed that water dominates the initial hydrolysis rate of DMO. In later stages, oxalic acid plays a major role in catalyzing DMO hydrolysis and MMO further hydrolysis. Based on these observations, a mechanism involving the ionization of water and oxalic acid was developed that assumes nucleophilic substitution to be the rate-determining step. Concentration-based rate equations were further deduced including the contribution of water startup and the catalytic action of oxalic acid. In addition, the kinetic and equilibrium parameters were estimated from the experimental data through regression analysis.

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