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Issue 11, 2018, Issue in Progress
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Experimental study on the durability of the polydopamine functionalized gas–liquid–solid microreactor for nitrobenzene hydrogenation

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Abstract

As a promising technique for multiphase catalytic reactions, the widespread applications of gas–liquid–solid microreactors are still limited by poor durability. Hence, in this work, a method for the preparation of Pd nanocatalysts inside a gas–liquid–solid microreactor was proposed to realize long-term durability using electroless deposition on the polydopamine functionalized surface followed by hydrogen reduction. This method not only increases the utilization efficiency of the Pd ions but also improves the durability of the microreactor. The chemical composition and topography characterization of the fabricated catalyst layer were tested using XPS and FESEM, respectively. The results indicated that the incorporation of hydrogen reduction resulted in nearly all palladium ions being reduced and the palladium nanoparticles were dispersed uniformly on the polydopamine modified surface. The microreactor prepared by this method exhibited high durability and high nitrobenzene conversion as compared to the traditional electroless catalyst deposition. Besides, it was shown that the increased inlet nitrobenzene concentration and flow rates played a negative role in the durability. The longer microreactor exhibited a better durability.

Graphical abstract: Experimental study on the durability of the polydopamine functionalized gas–liquid–solid microreactor for nitrobenzene hydrogenation

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Publication details

The article was received on 15 Nov 2017, accepted on 24 Jan 2018 and first published on 02 Feb 2018


Article type: Paper
DOI: 10.1039/C7RA12460K
RSC Adv., 2018,8, 5661-5669
  • Open access: Creative Commons BY license
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    Experimental study on the durability of the polydopamine functionalized gas–liquid–solid microreactor for nitrobenzene hydrogenation

    X. Zhu, H. Feng, R. Chen, Q. Liao, D. Ye, B. Zhang, J. Liu, M. Liu and G. Chen, RSC Adv., 2018, 8, 5661
    DOI: 10.1039/C7RA12460K

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