Enhanced transesterification reactive distillation for producing isopropanol: From kinetics, pilot-scale experiments, and process design to sustainability evaluation

Geng, Xueli; Ding, Qiuyan; Na, Jian; Ping, Yan; Li, Hong; Lei, Zhigang; Li, Guoxuan; Dai, Chengna; Gao, Xin

doi:10.1016/j.seppur.2022.122108

Cited by 18 publications

(1 citation statement)

References 37 publications

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“…Reactive distillation (RD) is a typical process intensification technology which combines separation with reaction in a column. − Compared with the traditional separation technologies, the limit of chemical reaction equilibrium is easily broken by RD, − which improves the reaction conversion, and significantly reduces the investment and operating costs. − RD has been industrially applied for certain types of chemical-equilibrium limited reactions, such as esterification, − transesterification, and etherification. , However, because the RD process relies on coupling when the reactions and distillation are combined into a single unit, there must be a good match between reaction and separation. ,, Especially in esterification systems, which are limited by the separation efficiency of gas–liquid mass transfer, the matching problem of reaction and separation in the RD column is an urgent problem in the field. ,, …”

Section: Introductionmentioning

confidence: 99%

Understanding the Quantitative Matching Principle of Reaction and Distillation for the Reactive Distillation Process of Cyclohexyl Acetate Synthesis

Hou

Geng

Ding

et al. 2023

Ind. Eng. Chem. Res.

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The matching problem of reaction and separation in reactive distillation (RD) is an urgent problem, and the main reason for little relevant research is that there is no suitable RD for experiments. To understand the matching principle, this work designed KRD001#SCPI and HY@SiC catalytic packings, which tend to different coupling ratios of reaction and separation. The pilot-scale RD experiments and corresponding simulation of cyclohexyl acetate production were studied to verify matching coupling of different reaction RD requirements. Upon verification of this, conventional RD processes were considered from economic, environmental, and energy perspectives, and a new matching form of RD was further proposed based on uneven product distribution. For a ternary reaction system where product was heavy, product concentration moved downward, catalytic packings with high reaction rates were needed at lower reaction sections to avoid a reverse reaction, and those with high separation efficiency are needed at the upper section to separate product and reactants better.

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Section: Introductionmentioning

confidence: 99%

Understanding the Quantitative Matching Principle of Reaction and Distillation for the Reactive Distillation Process of Cyclohexyl Acetate Synthesis

Hou

Geng

Ding

et al. 2023

Ind. Eng. Chem. Res.

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A novel magnetic bifunctional hydrochar catalyst derived from palm leaf residue for biodiesel production: kinetic and thermodynamic studies

Aliyu,

Rashid,

Tsubota

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDNovel magnetic bifunctional hydrochar‐based catalysts were produced from activated hydrochar derived from palm leaf residue (PLRAH) via a wet impregnation technique and used to perform one‐step waste cooking oil (WCO) transesterification to produce biodiesel. The magnetic bifunctional hydrochar‐based catalysts were evaluated for their acid–base properties, crystallinity, functional groups, magnetism, textural properties, thermal stability, chemical composition, and morphology.RESULTSThe PLRAH‐Fe2O3/K2O magnetic catalyst performed well in thermal testing, with a large specific surface area of 111.08 m2 g−1 and its high basicity value of 7.34 mmol g−1, as well as an acidity value of 12.67 mmol g−1, significantly contributed to the WCO transesterification. An optimum biodiesel yield of 98.36% was obtained under the following conditions: catalyst loading of 3 wt%, a methanol‐to‐WCO molar ratio of 12:1, and a reaction temperature of 75 °C for a duration of 4 h and biodiesel yields maintained at >80% after five cycles. The produced biodiesel complied with the physicochemical properties stated in ASTM D6751. The kinetic study also revealed that WCO transesterification using the one‐step approach had a pseudo‐first order and activation energy () of 24.27 kJ mol−1. Furthermore, the thermodynamic variables, including Gibbs free energy (∆Go), enthalpy (∆Ho), and entropy (∆So) of WCO transesterification, were found to be 7.60 kJ mol−1, 24.27 kJ mol−1, and −21.78 J mol−1 K, respectively. This suggests that WCO transesterification was an endothermic and non‐spontaneous process.CONCLUSIONThe synthesized magnetic bifunctional hydrochar‐based catalyst demonstrated outstanding performance for WCO transesterification, highlighting its potential for efficient biodiesel production. © 2024 Society of Chemical Industry (SCI).

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Measurement and correlation of the isobaric vapor-liquid equilibria data of 2-Ethyl Hexanol + 2-Ethyl Hexyl Acrylate and Acrylic Acid + 2-Ethyl Hexyl Acrylate systems

Wahab,

Nawaz,

Ahmed

et al. 2024

Chemical Data Collections

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Enhanced transesterification reactive distillation for producing isopropanol: From kinetics, pilot-scale experiments, and process design to sustainability evaluation

Cited by 18 publications

References 37 publications

Understanding the Quantitative Matching Principle of Reaction and Distillation for the Reactive Distillation Process of Cyclohexyl Acetate Synthesis

Understanding the Quantitative Matching Principle of Reaction and Distillation for the Reactive Distillation Process of Cyclohexyl Acetate Synthesis

A novel magnetic bifunctional hydrochar catalyst derived from palm leaf residue for biodiesel production: kinetic and thermodynamic studies

Measurement and correlation of the isobaric vapor-liquid equilibria data of 2-Ethyl Hexanol + 2-Ethyl Hexyl Acrylate and Acrylic Acid + 2-Ethyl Hexyl Acrylate systems

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