Liquid-phase esterification of methacrylic acid with methanol catalyzed by cation-exchange resin in a fixed bed reactor: Experimental and kinetic studies

[Display omitted] The kinetic behavior of esterification between methacrylic acid and methanol catalyzed by NKC-9 resin was studied in a fixed bed reactor. The reaction was conducted in the temperature range of 323.15 to 368.15 K with the molar ratio of reactants from 0.8 to 1.4 under certain pressu...

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Published inChinese journal of chemical engineering Vol. 58; no. 6; pp. 1 - 10
Main Authors Liu, Junyang, Wang, Luming, Bian, Yuhang, Li, Chunshan, Li, Zengxi, Li, Jie
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2023
Beijing Key Laboratory of Ionic Liquids Clean Process,Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China
Beijing Key Laboratory of Ionic Liquids Clean Process,Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China%Beijing Key Laboratory of Ionic Liquids Clean Process,Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China%School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China
Langfang Technological Center of Green Industry,Langfang 065801,China%School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China
School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China
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Summary:[Display omitted] The kinetic behavior of esterification between methacrylic acid and methanol catalyzed by NKC-9 resin was studied in a fixed bed reactor. The reaction was conducted in the temperature range of 323.15 to 368.15 K with the molar ratio of reactants from 0.8 to 1.4 under certain pressure. The measurement data were regression with the pseudo-homogeneous (P-H), Eley-Rideal (E-R), and Langmuir-Hinshelwood (L-H) heterogeneous kinetic models. Independent adsorption experiments were implemented to gain the adsorption equilibrium constants of four components. Among the above three models, the L-H model exhibited the best fitting results. The stability of NKC-9 was evaluated by long-term running with the yield of methyl methacrylate no decrease during 3000 h operation. The structure and physicochemical properties of the new and used catalyst were performed by several characterizations including thermogravimetric analysis (TG), scanning electron microscope (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) and so on.
ISSN:1004-9541
2210-321X
DOI:10.1016/j.cjche.2022.10.011