Taming electronic properties of boron nitride nanosheets as metal-free catalysts for aerobic oxidative desulfurization of fuels

Lu, Linjie; He, Jing; Wu, Peiwen; Wu, Yin‐Zhong; Chao, Yanhong; Li, Hongping; Tao, Duan‐Jian; Fan, Lei; Zhu, Wenshuai

doi:10.1039/c8gc01625a

Cited by 135 publications

(74 citation statements)

References 60 publications

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“…For all samples, there are two diffraction peaks situating at about 24° and 44° in their patterns, representing the interlayer (002) facets diffraction and in‐plane (100) facets diffraction of graphitic carbon. [ 14 ] With the increase of carbonization temperature from 400 to 600 °C, the peaks at about 24° slightly shift left for the samples C‐ T and C‐P‐ T , suggesting the distance between (002) facets becomes larger due to the oxidation of carbon in air at a higher temperature. Similarly, peaks at about 44° become obvious along with the increase of carbonization temperature, which illustrates that the triperiodic order of graphitic phase increases at a higher temperature.…”

Section: Resultsmentioning

confidence: 99%

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines^†

et al. 2020

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of main observation and conclusion Sustainable phytic acid and cellulose are selected as precursors to fabricate P-doped carbon material (C-P-500), which possesses the high surface area and exhibits excellent catalytic activity and stability in the oxidative coupling of benzylamines (conversion > 95%, yield > 95%). During the carbonization of cellulose in the muffle furnace, phytic acid can efficiently prevent the cellulose-derived carbon from combustion and create micro/meso porous structure because of its special function of fire retardation. Control experiments and characterizations demonstrate that P-containing groups anchoring on C-P-500 improve the catalytic performance of carbocatalyst in the oxidation of benzylamines to imines. The excellent catalytic activity of C-P-500 should be contributed collectively by carbonyl and P=O(OH)2 groups. Due to the sustainable property of precursors and simple methodology for fabricating P-doped carbocatalyst, along with the moderate reaction conditions, it is a green catalytic system for the oxidative coupling of benzylamines to imines.

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Section: Resultsmentioning

confidence: 99%

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines^†

et al. 2020

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Section: Mechanism Of Podsmentioning

confidence: 99%

“…To study the mechanism of PODS, researchers have mainly adopted active species capture test using electron paramagnetic resonance (EPR) technique for the detection of active species. [40,[127][128][129][130][131] The procedure is similar to PODS, adding a certain amount of scavenger or charging sufficient N 2 . The ascorbic acid (AA), isopropyl alcohol (IPA), dimethyl sulfoxide (DMSO), and triethanolamine (TEA) scavengers were employed for trapping the superoxide radicals ( * O 2 À ), hydroxyl radicals ( * OH), electrons (e À ), and holes (h + ), respectively, [86,34,[132][133][134][135] while N 2 was used for evacuating the oxidant O 2 .…”

Section: Mechanism Of Podsmentioning

confidence: 99%

Desulfurization through Photocatalytic Oxidation: A Critical Review

et al. 2020

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Fuel oil, the most important strategic resource, has been widely used in industrial applications. However, the sulfur‐containing compounds in fuel oil also present humanity with huge environmental issues and health concerns due to the hazardous combustion waste. To address this problem, the low vulcanization of fuel production technology has been intensively explored. Compared with traditional hydrodesulfurization technology, the newly emerged photocatalytic desulfurization has the advantages of milder operating conditions, lower energy consumption, and higher efficiency, holding great prospect to achieve deep desulfurization. Though great efforts have been made, the desulfurization catalysts still suffer from inferior light absorption, fast recombination of photocarriers, and poor structure modification. This Review summarizes recent development of photocatalytic desulfurization, including the desulfurization principle, current desulfurization challenges, and corresponding solutions. Particularly, the roles of defect engineering, hybrid coupling, and structure modifications in the enhancement of photocatalytic performance are emphasized. In addition, the photocatalytic desulfurization mechanism is also introduced with the .OH and .O2− radicals as main active species. Finally, some perspectives on the photocatalytic desulfurization are provided, which can further optimize the desulfurization efficiency and guide future photocatalyst design.

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“…In the ODS system, thiophene compounds and their aromatic derivatives are oxidized to corresponding sulfones or sulfoxides by suitable oxidants, and the polar products are subsequently removed by extraction or adsorption . Hydrogen peroxide has been widely used as the oxidant in various ODS systems, becoming the most popular oxidant due to its low cost and environmental friendliness .…”

Section: Introductionmentioning

confidence: 99%

Ultradeep desulfurization of model oil through the oxidative adsorption process using Dawson‐type polyoxometalates and graphene oxide multifunctional composites

Dou

Wang

2019

Applied Organom Chemis

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Eight Dawson-type polyoxometalates were successfully prepared and used in an octanal/air oxidative desulfurization (ODS) system for model oil. Among which, the classical 2:18 polyoxometalate K 6 [α-P 2 W 18 O 62 ]·14H 2 O exhibited the best catalytic performance with a sulfur removal ratio of 99.63%. Then, K 6 [α-P 2 W 18 O 62 ]·14H 2 O was supported on graphene oxide (GO) to afford K 6 P 2 W 18 O 62 /GO using the hydrothermal method. Due to the in situ adsorption of the supported catalysts in the ODS process, the sulfur removal ratio was 96.10% without extraction treatment. Compared with the octanal/air ODS system using pure GO as an adsorbent for the oxidation products, the sulfur removal ratio increased from 89.21 to 96.10%, and the n-octanal/S molar ratio decreased from 24 to 4. To facilitate the recycling of the catalyst and avoid catalyst loss, K 6 [α-P 2 W 18 O 62 ]·14H 2 O was supported on magnetic graphene oxide (mGO) to afford K 6 P 2 W 18 O 62 /mGO. The results showed that the supported catalyst could be easily recovered with the aid of an external magnetic field, while maintaining high catalytic activity during five cycles of reuse with little catalyst loss. Furthermore, all the prepared materials were analyzed by a series of characterizations, and the reaction mechanism of the studied system was proposed through contrast tests and GC-MS characterization analysis.

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Taming electronic properties of boron nitride nanosheets as metal-free catalysts for aerobic oxidative desulfurization of fuels

Abstract: Electronic properties of boron nitride nanosheets were tamed by doping carbon atoms into the matrix for boosted aerobic catalytic performance.

Cited by 135 publications

References 60 publications

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines^†

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines^†

Desulfurization through Photocatalytic Oxidation: A Critical Review

Ultradeep desulfurization of model oil through the oxidative adsorption process using Dawson‐type polyoxometalates and graphene oxide multifunctional composites

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Taming electronic properties of boron nitride nanosheets as metal-free catalysts for aerobic oxidative desulfurization of fuels

Abstract: Electronic properties of boron nitride nanosheets were tamed by doping carbon atoms into the matrix for boosted aerobic catalytic performance.

Cited by 135 publications

References 60 publications

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines†

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines†

Desulfurization through Photocatalytic Oxidation: A Critical Review

Ultradeep desulfurization of model oil through the oxidative adsorption process using Dawson‐type polyoxometalates and graphene oxide multifunctional composites

Contact Info

Product

Resources

About

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines^†

Functions of Phytic Acid in Fabricating Metal‐Free Carbocatalyst for Oxidative Coupling of Benzylamines^†