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Kinetic Modelling of Levulinic Acid Hydrogenation Over Ru-Containing Polymeric Catalyst
Topics in Catalysis ( IF 3.6 ) Pub Date : 2020-02-10 , DOI: 10.1007/s11244-020-01223-0
Igor I. Protsenko , Linda Zh. Nikoshvili , Valentina G. Matveeva , Esther M. Sulman

Abstract

This work is devoted to kinetic modelling of levulinic acid (LA) hydrogenation to gamma-valerolactone (GVL) in aqueous medium in a batch mode using 5%-Ru/MN100 catalyst, which comprises Ru dioxide nanoparticles confined in polymeric network of hyper-crosslinked polystyrene of MN100 type. Kinetic models of liquid-phase hydrogenation of LA to GVL were proposed based on Langmuir–Hinshelwood and Eley–Rideal mechanisms. Calculations based on experimental data obtained during the study allowed determining the main kinetic parameters of LA hydrogenation reaction and to propose the rate expression adequately describing the catalytic process. Moreover, hypothesis on the reaction mechanism was proposed considering RuO2 as catalytically active phase and 4-hydroxypentanoic acid as main intermediate compound.

Graphic Abstract



中文翻译:

含钌聚合物催化剂上丙戊酸加氢动力学模型

摘要

这项工作致力于使用5%-Ru / MN100催化剂以间歇方式在水介质中将乙酰丙酸(LA)加氢为γ-戊内酯(GVL)的动力学模型,该催化剂包含局限在超交联聚合物网络中的二氧化钌纳米颗粒。 MN100型聚苯乙烯。基于Langmuir-Hinshelwood和Eley-Rideal机理,提出了LA到GVL液相加氢的动力学模型。根据研究过程中获得的实验数据进行计算,可以确定LA加氢反应的主要动力学参数,并提出足以描述催化过程的速率表达式。此外,提出了以RuO 2为催化活性相,以4-羟基戊酸为主要中间体的反应机理假说。

图形摘要

更新日期:2020-02-10
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