Selectivity behavior of monomethyl maleate

Reactions condition Maleic acid Methanol = 1 4 Temperature = 318 K 

Schlessinger G. G., Handbook of chemistry and physics. Chemical Rubber Co., 1970 Yadav G. D. and Thathagar M. B., Reactive and Functional Polymers, 52, 99 (2002) 

Trickle-bed reactors, wherein gas and liquid reactants are contacted in a co-current down flow mode in the presence of heterogeneous catalysts, are used in a large number of industrial chemical processes. Being a multiphase catalytic reactor with complex hydrodynamics and mass transfer characteristics, the development of a generalized model for predicting the performance of such reactors is still a difficult task. However, due to its direct relevance to industrial-scale processes, several important aspects with respect to the influence of external and intraparticle mass transfer effects, partial wetting of catalyst particles and heat effects have been studied previously (Satterfield and Way (1972) Hanika et. al., (1975,1977,1981) Herskowitz and Mosseri (1983)). The previous work has mainly addressed the question of catalyst effectiveness under isothermal conditions and for simple kinetics. It is well known that most of the industrially important reactions represent complex reaction kinetics and very often multistep reactions. Very few attempts have been made on experimental verification of trickle-bed reactor models for multistep catalytic reactions in the previous work. 

The experimental data have been compared with the model predictions for different sets of conditions in which liquid velocity, molar ratio of reactants and temperature were varied. 

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Selectivity behavior of monomethyl maleate in homogeneous reactions 144... 

In a series/ parallel reaction system such as esterification of maleic acid, it is useful to study the selectivity pattern of the intermediate product (monomethyl maleate) as a function of different operating parameters. For the present work, the selectivity of monomethyl maleate was calculated at different conversion levels of maleic acid. In Figs. 4.19-4.21, the selectivity of monomethyl maleate obtained as a function of maleic acid conversion is presented for different reaction conditions. Some specific observations on selectivity behavior are summarized below. Homogeneous reaction ... 

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