Methyl Methacrylate Synthesis: Thermodynamic Analysis
for Oxidative Esterification of Methacrolein and Aldol Condensation
of Methyl Acetate
Posted on 2020-06-08 - 17:05
Methyl
methacrylate (MMA) as a specialty monomer of polymers has
motivated industry to develop clean and sustainable technologies for
its production. Herein, a comprehensive thermodynamic analysis of
MMA production from petroleum-based and coal/biomass-based resources
is conducted through the Gibbs free energy minimization method. For
the petroleum-based route via oxidative esterification of methacrolein
(MAL), the production of MMA is sensitive to the composition of methanol
(MeOH) and O2 in the feed, but insensitive to the reaction
temperature and pressure. For the coal/biomass-based route via aldol
condensation of methyl acetate (MeOAc), a moderate temperature (350–400
°C) and large MeOH/MeOAc ratio (>2) give rise to the efficient
production of MMA. Hence, significant improvements in the MMA yield
could be achieved by optimizing the reaction conditions, which could
almost reach the maximal value theoretically of 1.0 mol from per mole
of MAL or MeOAc. This study would shed new light on the thermodynamics
of MMA production, which is foundational for the development of new
processes at the industrial scale.
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Guan, Yanan; Ma, Hongqin; Chen, Wenyao; Li, Maoshuai; Qian, Gang; Chen, De; et al. (2020). Methyl Methacrylate Synthesis: Thermodynamic Analysis
for Oxidative Esterification of Methacrolein and Aldol Condensation
of Methyl Acetate. ACS Publications. Collection. https://doi.org/10.1021/acs.iecr.0c02017