Progress on Zeolite-membrane-aided Organic Acid Esterification

2nd Materials Research Society of Indonesia Meeting

Makertiharta, I.G.B.N.^1 ; Dharmawijaya, P.T.^1

Chemical Engineering Department, Institut Teknologi Bandung, Jl. Ganesha 10, Jawa Barat, Bandung

40132, Indonesia^1

关键词: Acid esterification;    Chemical resistant;    Effective materials;    Esterification reactions;    Pharmaceutical industry;    Reactive distillations;    Separation performance;    Separation process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/214/1/012012/pdf
DOI  :  10.1088/1757-899X/214/1/012012

来源: IOP

【 摘 要 】

Esterification is a common route to produce carboxylic acid esters as important intermediates in chemical and pharmaceutical industries. However, the reaction is equilibrium limited and needs to be driven forward by selective removal one of the products. There have been some efforts to selectively remove water from reaction mixture via several separation processes (such as pervaporation and reactive distillation). Integrated pervaporation and esterification has gained increasing attention towards. Inorganic zeolite is the most popular material for pervaporation due to its high chemical resistant and separation performance towards water. Zeolite also has proven to be an effective material in removing water from organic compound. Zeolite can act not only as selective layer but also simultaneously act as a catalyst on promoting the reaction. Hence, there are many configurations in integrating zeolite membrane for esterification reaction. As a selective layer to remove water from reaction mixture, high Si/Al zeolite is preferred to enhance its hydrophilicity. However, low Si/Al zeolite is unstable in acid condition due to dealumination thus eliminate its advantages. As a catalyst, acid zeolites (e.g. H-ZSM-5) provide protons for autoprotolysis of the carboxylic acid similar to other catalyst for esterification (e.g. inorganic acid, and ion exchange resins). There are many studies related to zeolite membrane aided esterification. This paper will give brief information related to zeolite membrane role in esterification and also research trend towards it.