Abstract
Owing to their unique structural and surface properties, mesoporous microspheres are widely applied in the catalytic field. Generally, increasing the surface area of the specific active phase of the catalyst is a good method, which can achieve a higher catalytic activity through the fabrication of the corresponding catalytic microspheres with the smaller size and hollow structure. However, one of the major challenges in the use of hollow microspheres (microcapsules) as catalysts is their chemical and structural stability. Herein, the grape-like hypercrosslinked polystyrene hierarchical porous interlocked microcapsule (HPIM-HCL-PS) is fabricated by SiO2 colloidal crystals templates, whose structure is the combination of open mouthed structure, mesoporous nanostructure and interlocked architecture. Numerous microcapsules assembling together and forming the roughly grape-like microcapsule aggregates can enhance the structural stability and recyclability of these microcapsules. After undergoing the sulfonation, the sulfonated HPIM-HCL-PS is served as recyclable acid catalyst for condensation reaction between benzaldehyde and ethylene glycol (TOF = 793 h−1), moreover, exhibits superior activity, selectivity and recyclability.
Highlights
For effectively decreasing mass transfer resistance and greatly enhancing catalytic activity of polymeric microcapsules, the following critical structural/morphological characteristics should be taken into consideration: the size and shape of the entire microcapsule; the porosity on the capsule wall; the thickness, structure/morphology, and the stability of the capsule wall[15,16]
We present a facile method to fabricate grape-like hypercrosslinked polystyrene hierarchical porous interlocked microcapsule (HPIM-HCL-PS) by silica colloidal crystals templates (CCTs)
As recyclable acid catalysts, the sulfonated HPIM-HCL-PS (HPIM-HCL-SPS) for condensation reaction between ethylene glycol and benzaldehydeas is illustrated as an example
Summary
Acid Functionalization as Acid received: 30 September 2016 accepted: 03 February 2017 Published: 16 March 2017. The grape-like hypercrosslinked polystyrene hierarchical porous interlocked microcapsule (HPIM-HCL-PS) is fabricated by SiO2 colloidal crystals templates, whose structure is the combination of open mouthed structure, mesoporous nanostructure and interlocked architecture. We present a facile method to fabricate grape-like hypercrosslinked polystyrene hierarchical porous interlocked microcapsule (HPIM-HCL-PS) by silica colloidal crystals templates (CCTs). Their structure is the integration of open mouthed structure, hierarchical porous nanostructure and interlocked architecture. The presence of interlocked architecture makes numerous microcapsules assemble together and form the roughly grape-like microcapsule aggregates This interlocked structure endows HPIM-HCL-PS with excellent mechanical stability and recyclability. The HPIM-HCL-SPS is served as recyclable acid catalyst for condensation reaction between ethylene glycol and benzaldehyde, exhibits high catalytic activity
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
