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Issue 12, 2012
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Synthesis of hierarchically porous zeolite A crystals with uniform particle size in a droplet microreactor

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Abstract

Simple and fast synthesis of zeolite A nanocrystals with uniform particle size and bimodal mesoporous-microporous distribution is presented. It takes only tens of minutes to synthesize rather than hours to days that are usually needed. A microfluidic system is devised and used for the hydrothermal synthesis, in which monodispersed nanolitre droplets containing a gel type precursor solution are generated in a lab-on-a-chip part of the system and then passed through a capillary tube part at 100 °C. A water-soluble alginate polymer was introduced into the gel to generate a hierarchically mesoporous-microporous zeolite A crystals with around 100 nm particle size and high crystallinity, which showed a superior catalytic performance in alkyl borate synthesis. The approach presented here could open a new avenue for producing high quality inorganic nanoparticles continuously with no clogging problem that is inherent in the synthesis of nanoparticles.

Graphical abstract: Synthesis of hierarchically porous zeolite A crystals with uniform particle size in a droplet microreactor

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Publication details

The article was received on 12 Jan 2012, accepted on 30 Mar 2012 and first published on 30 Mar 2012


Article type: Paper
DOI: 10.1039/C2RA20074K
Citation: RSC Adv., 2012,2, 5323-5328
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    Synthesis of hierarchically porous zeolite A crystals with uniform particle size in a droplet microreactor

    P. H. Hoang, K. Yoon and D. Kim, RSC Adv., 2012, 2, 5323
    DOI: 10.1039/C2RA20074K

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