Reactive Distillation Performance of Difunctional Hollow Fiber Composite Membranes with Catalytic and Separative Properties as Structured Packing

Ma, Xiao‐Hua; Wen, Xin

doi:10.1021/ie301016w

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…For the CD process with high reboiler duty, more ethanol vapor can be transferred through the column to enhance the heat/mass transfer while more products can be reboiled to the top of the column for better separation . Therefore, represented by the display temperature in this work, the reboiler duty dependent CD performance was investigated, with the results as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Catalytic distillation for esterification of acetic acid with ethanol: promising SS‐fiber@HZSM‐5 catalytic packings and experimental optimization via response surface methodology

Deng

Ding

Zhao

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND Catalytic distillation (CD) is considered a promising green chemical process for numerous catalytic esterification reactions. Rendering novel structured CD packings is particularly desirable but remains challenging. RESULTS A microfibrous‐structured HZSM‐5 solid acid catalyst is proposed as CD packing and its separation and esterification reaction efficiency for producing ethyl acetate from acetic acid and ethanol are demonstrated. Factorial design based on response surface methodology is employed for fast determination of optimum reaction conditions, which is working effectively and efficiently. Such structured catalyst packing is obtained by direct growth of zeolite onto the θ‐ring analogues shaped from a microfibrous‐structure consisting of 15 vol% 20 µm stainless‐steel‐fiber (SS‐fiber) and 85 vol% voidage. CONCLUSION The SS‐fiber@HZSM‐5 packing provides a unique combination of instantaneous distillation and desired catalytic properties with respect to stability, adequate acidic sites and high mass/heat transfer, and therefore works efficiently and effectively. High total (95.9%) and actual (90.9%) yields of ethyl acetate with 89.8% purity are achievable while the high CD efficiency was well‐preserved after at least 240 h over 30 consecutive batch runs. © 2017 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Catalytic distillation for esterification of acetic acid with ethanol: promising SS‐fiber@HZSM‐5 catalytic packings and experimental optimization via response surface methodology

Deng

Ding

Zhao

et al. 2017

J of Chemical Tech & Biotech

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Distillation of alcohol/water solution in hybrid metal–organic framework hollow fibers

Zhang

et al. 2019

AIChE Journal

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Distillation with multitudinous structured packings has shown great potential for chemical separation. However, there still remains a big challenge to prepare porous structured packings with more productive separation and better mass transfer efficiency due to materials limitations. Metal–organic framework (MOF) membranes have commendable porous structures that provide enough pathways for fast mass transport and superhydrophobic character for efficient separation. Herein, novel MOFs‐based hollow fiber structured packings were fabricated by a facile two‐step blending and post‐coating method and successfully applied in alcohol/water distillation. The ZIF‐8 nanoparticles with high surface area and hydrophobic framework in PDMS matrix greatly accelerated mass transfer rate of membrane. Especially, as hydrophobic ZIF‐8/PDMS layer was coated on the inner surface of fibers, the wetting behavior of membranes can be effectively prevented. The prepared ZIF‐8/PDMS structured packings can be easily operated far above the normal flooding limit and held the height of mass transfer unit as small as desired.

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Process Intensification in Catalysis

Falß,

Rieks,

Kockmann

2017

Contemporary Catalysis: Science, Technology, and Applications

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Intensification of chemical (and/or physical) processes (PI) leads to higher efficiency in smaller equipment, better quality from more robust and flexible processes, as well as cost reduction with increased safety. These goals are very ambitious and need a complete toolbox of measures on all relevant length scales, from molecules to chemical plants, together with appropriate methods. Catalysis should facilitate, accelerate, and direct chemical transformations for enhanced conversion and selectivity, while improved transport processes and energy supply provide comparable process conditions for each molecule. Novel energy logistics assists chemical transformations as well as molecular and convective transport, while integration of various operations generates new opportunities for chemical production processes. Catalysis and process intensification are an intrinsically tied couple for sustainable and green chemistry and engineering.

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Reactive Distillation Performance of Difunctional Hollow Fiber Composite Membranes with Catalytic and Separative Properties as Structured Packing

Cited by 3 publications

References 35 publications

Catalytic distillation for esterification of acetic acid with ethanol: promising SS‐fiber@HZSM‐5 catalytic packings and experimental optimization via response surface methodology

Catalytic distillation for esterification of acetic acid with ethanol: promising SS‐fiber@HZSM‐5 catalytic packings and experimental optimization via response surface methodology

Distillation of alcohol/water solution in hybrid metal–organic framework hollow fibers

Process Intensification in Catalysis

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