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Facile synthesis of hierarchical porous solid catalysts with acid–base bifunctional active sites for the conversion of cellulose to 5-hydroxymethylfurfural

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Abstract

Herein, rod-shaped modified halloysite nanotubes (m-HNTs) with suitable wettability and basic active sites were utilized as stable particles to stabilize W/O Pickering HIPEs. Immediately following the thermal polymerization treatment and the subsequent sulfonation process, we have synthesized hierarchical porous solid catalysts (HPSCs) with acid–base bifunctional active sites. The as-prepared HPSCs have hierarchical meso–macroporous structures, strongly acidic surfaces and basic catalytic active sites, which can remarkably improve the catalytic activity for the conversion of cellulose to 5-hydroxymethylfurfural (HMF). This suggests that the stable particles with basic active sites embedded in the porous structure of HPSCs can significantly improve the catalytic activity. The results showed that a maximum yield of HMF (45.6%) can be obtained and the catalyst was recycled in four consecutive cycles without significant loss of catalytic activity. Moreover, this provides a new way for the development of multistage pore structure catalysts for catalytic conversion of carbohydrates.

Graphical abstract: Facile synthesis of hierarchical porous solid catalysts with acid–base bifunctional active sites for the conversion of cellulose to 5-hydroxymethylfurfural

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Publication details

The article was received on 31 Jul 2018, accepted on 19 Sep 2018 and first published on 21 Sep 2018


Article type: Paper
DOI: 10.1039/C8NJ03812K
Citation: New J. Chem., 2018, Advance Article
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    Facile synthesis of hierarchical porous solid catalysts with acid–base bifunctional active sites for the conversion of cellulose to 5-hydroxymethylfurfural

    K. Wang, Y. Zhang, J. Zhao, C. Yan, Y. Wei, M. Meng, X. Dai, C. Li and Y. Yan, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ03812K

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