Carbon doped hexagonal BN as a highly efficient metal-free base catalyst for Knoevenagel condensation reaction

Li, Xingyun; Lin, Baining; Li, Haobo; Yu, Qiang; Ge, Ying; Xiao, Jin; Liu, Xuehua; Zhou, Yonghua; Xiao, Jianping

doi:10.1016/j.apcatb.2018.08.021

Cited by 112 publications

(29 citation statements)

References 59 publications

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“…[26][27][28] Generally speaking, cheap organic precursors containing carbon and nitrogen elements can be prepared by thermal condensation to prepare g-C 3 N 4 . 29,30 Its unique chemical composition and conjugated electronic structure endows it with strong nucleophilic capability. The typical layered structure of g-C 3 N 4 can provide a supportive surface for Ag 3 PO 4 to disperse and synthesize semiconductor heterojunctions.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of AgCl/Ag₃PO₄/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

Cai

Wang

et al. 2021

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Fabrication of AgCl/Ag₃PO₄/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

Cai

Wang

et al. 2021

RSC Adv.

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“…One of the feasible methods to further promote the catalytic activity of BN is to introduce the carbon element leading to previously unknown borocarbonitride (BCN) materials (13). BCN hybrids tend to form isolated patches of hexagonal BN in graphene phases (at high B and N concentrations), the structure of which is thermodynamically favorable compared with homogeneous distribution of B, C, and N elements (14).…”

Section: Introductionmentioning

confidence: 99%

Methanol conversion on borocarbonitride catalysts: Identification and quantification of active sites

Zhang

Yan

et al. 2020

Sci. Adv.

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Borocarbonitrides (BCNs) have emerged as highly selective catalysts for the oxidative dehydrogenation (ODH) reaction. However, there is a lack of in-depth understanding of the catalytic mechanism over BCN catalysts due to the complexity of the surface oxygen functional groups. Here, BCN nanotubes with multiple active sites are synthesized for oxygen-assisted methanol conversion reaction. The catalyst shows a notable activity improvement for methanol conversion (29%) with excellent selectivity to formaldehyde (54%). Kinetic measurements indicate that carboxylic acid groups on BCN are responsible for the formation of dimethyl ether, while the redox catalysis to formaldehyde occurs on both ketonic carbonyl and boron hydroxyl (B─OH) sites. The ODH reaction pathway on the B─OH site is further revealed by in situ infrared, x-ray absorption spectra, and density functional theory. The present work provides physical-chemical insights into the functional mechanism of BCN catalysts, paving the way for further development of the underexplored nonmetallic catalytic systems.

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“…This reaction can be accomplished by treating a aldehyde with an active methylene compound in the presence of various homogeneous or heterogeneous basic catalysts, such as sodium carboxymethylcellulose, metal co‐ordinated organic xerogel, ionic liquids, nitrogen doped CN x , Pd/AlO(OH), et al.. However, there are some shortcomings for these reported catalysts, such as low activity, non‐environmentally friendly solvents requirement and unrecyclable . Thus, a green and recyclable catalyst with excellent yields for Knoevenagel condensation is in demand.…”

Section: Introductionmentioning

confidence: 95%

Ultrasonication‐assisted Synthesis of α, β‐Unsaturated Compounds Catalyzed by Amino‐functionalized FDU‐12 Catalyst

Yang

Zhang

et al. 2019

ChemistrySelect

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Amino-group functionalized FDU-12 material (FDU-12-NH 2 ) was utilized as an efficient and recyclable catalyst for the Knoevenagel condensation to afford α, β-unsaturated compounds. The catalysts were characterized by nitrogen adsorption, X-ray diffraction, Fourier transform infrared spectrophotometer, scanning electron microscopy, transmission electron microscopy and thermogravimetric analysis, which showed that FDU-12-NH 2 was successfully prepared using the post-synthesis-grafting method. Compared with the magnetic stirring method, the ultrasound-assisted method could improve the Knoevenagel reaction significantly in this work. In addition, the catalyst exhibited the highest catalytic activity in the mixed solvent of ethanol and water with volume ratio of 3 : 1 due to the solvent effect. Various substrates could convert to their desired products with high yields in short time; what's more, it could be used for four times without significant decrease of the activity. This work reveals that FDU-12-NH 2 is a promising heterogeneous catalyst for the synthesis of α, β-unsaturated compounds.

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Carbon doped hexagonal BN as a highly efficient metal-free base catalyst for Knoevenagel condensation reaction

Cited by 112 publications

References 59 publications

Fabrication of AgCl/Ag₃PO₄/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

Fabrication of AgCl/Ag₃PO₄/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

Methanol conversion on borocarbonitride catalysts: Identification and quantification of active sites

Ultrasonication‐assisted Synthesis of α, β‐Unsaturated Compounds Catalyzed by Amino‐functionalized FDU‐12 Catalyst

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Carbon doped hexagonal BN as a highly efficient metal-free base catalyst for Knoevenagel condensation reaction

Cited by 112 publications

References 59 publications

Fabrication of AgCl/Ag3PO4/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

Fabrication of AgCl/Ag3PO4/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

Methanol conversion on borocarbonitride catalysts: Identification and quantification of active sites

Ultrasonication‐assisted Synthesis of α, β‐Unsaturated Compounds Catalyzed by Amino‐functionalized FDU‐12 Catalyst

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Fabrication of AgCl/Ag₃PO₄/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

Fabrication of AgCl/Ag₃PO₄/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli