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Phosphor-doped hexagonal-boron nitride nanosheets as effective acid-base bifunctional catalyst for one-pot deacetalization-Knoevenagel cascade reaction

Abstract

One-pot cascade reactions over metal-free heterogeneous bifunctional catalysts are attracting wide attention in green chemistry, owing to the advantage of process intensification, as well as the elimination of wastes and metal contamination. In this paper, phosphor doped hexagonal-boron nitride nanosheets (BNP) can act excellent metal-free acid-base bifunctional catalyst for one-pot deacetalization-Knoevenagel cascade reaction. XRD,FT-IR,XPS, Solid NMR characterizations indicated that phosphor was doped into the framework of h-BN mainly at corner sites (N2P=O) and bayer sites (N3P-OH). The CO2-TPD and NH3-TPD characterizations showed that BNP sample with optimal phosphor doping amount possessed the highest amount of acid and base sites at the same time. Correlated with the catalytic performance, it can be concluded that mainly N3P-OH act as BrФsted acid sites and -BNH2 and N2P=O as Lewis and BrФsted base sites, respectively. In addition, the good recycling stability and immobilization feasibility on monolith support prove its potential for practical application.

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Publication details

The article was received on 30 Aug 2018, accepted on 10 Oct 2018 and first published on 11 Oct 2018


Article type: Paper
DOI: 10.1039/C8CY01821A
Citation: Catal. Sci. Technol., 2018, Accepted Manuscript
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    Phosphor-doped hexagonal-boron nitride nanosheets as effective acid-base bifunctional catalyst for one-pot deacetalization-Knoevenagel cascade reaction

    J. Zhao, B. Lin, Y. Zhu, Y. Zhou and H. Liu, Catal. Sci. Technol., 2018, Accepted Manuscript , DOI: 10.1039/C8CY01821A

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