Nitrogen-doped porous carbon materials: promising catalysts or catalyst supports for heterogeneous hydrogenation and oxidation

Li, Mingming; Xu, Fan; Li, Haoran; Wang, Yong

doi:10.1039/c6cy00544f

Cited by 274 publications

(133 citation statements)

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“…The research results have demonstrated that the incorporation of nitrogen (N) in the carbon skeleton may result in charge modulation to tune their chemical and electrical activities, and thus further promote their catalytic activity. [29] Different strategies have been developed for the preparation of nitrogen doped porous carbon materials, such as post modification, direct carbonization of N-containing precursors or mixture of nitrogen source and carbon source, [30] hardtemplate method and soft-template method. [25] Moreover, the doped nitrogen may increase the binding energy of carbon-metal and stabilize the deposited metal nanoparticles with small size, which can enhance the catalytic capability and durability of the resulting heterogeneous catalysts.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen‐Decorated Porous Carbon Supported AgPd Nanoparticles for Boosting Hydrogen Generation from Formic Acid

Zhang

Shang

et al. 2018

Energy Tech

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Formic acid (FA) decomposition to yield molecular H2 is a promising approach in hydrogen economy. Design of selective, efficient catalysts for dehydrogenation of formic acid remains a challenging topic. Here, nitrogen‐doped porous carbon (NPC) nanosheets were fabricated with glucose as carbon source and g‐C3N4 as both the nitrogen source and self‐sacrificial template. Highly dispersed AgPd nanoparticles were supported on NPC successfully by a simple liquid impregnation approach. The optimized catalyst Ag1Pd9@NPC exhibits high catalytic activity (total turnover frequency up to 3000 h−1) and 100 % hydrogen selectivity for the dehydrogenation reaction of FA at 50 °C. Our study demonstrated that the synergistic effects between the nitrogen‐doped carbon nanosheets support and AgPd nanoparticles play a pivotal role for the efficient catalytic dehydrogenation of formic acid.

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Section: Introductionmentioning

confidence: 99%

Nitrogen‐Decorated Porous Carbon Supported AgPd Nanoparticles for Boosting Hydrogen Generation from Formic Acid

Zhang

Shang

et al. 2018

Energy Tech

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“…On the other hand, the support is also a non‐negligible factor affecting the yield of CMO. Carbon materials have been testified to be one of the best choices as the catalyst support for heterogeneous reactions in the liquid phase owing to their excellent mechanical strength and stability under hydrothermal conditions, good electronic properties, large surface area for dispersing active components, easy recovery–refining–recycling for precious metals, relatively low cost as well as versatile existing forms . Over the past years, various carbon‐supported Pt (Pt/C) catalysts, including Pt/carbon nanotubes (CNTs), Pt/graphite, Pt/graphene, Pt/carbon nanofibers, Pt/carbon aerogel and xerogel, Pt/mesoporous carbon, and Pt/hollow carbon spheres, have been investigated for hydrogenation of CMA towards CMO.…”

Section: Introductionmentioning

confidence: 99%

Three‐Dimensionally Hierarchical Pt/C Nanocomposite with Ultra‐High Dispersion of Pt Nanoparticles as a Highly Efficient Catalyst for Chemoselective Cinnamaldehyde Hydrogenation

Fan

et al. 2017

ChemCatChem

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A monolithic carbon‐supported Pt nanocomposite with an interconnected three‐dimensionally hierarchical porous carbon framework and ultra‐high dispersion of Pt nanoparticles (Pt/3DHPC) is synthesized by using an effective “liquid phase impregnation template” strategy. The obtained Pt/3DHPC possesses rich mesoporosity and a low amount of oxygen‐containing functional groups, which notably improve the accessible internal surface area of macropores, number of active Pt sites, and electron transfer ability. When used as a catalyst for the selective cinnamaldehyde (CMA) hydrogenation towards cinnamyl alcohol (CMO), Pt/3DHPC exhibits high CMA conversion (92.7 %) and CMO selectivity (91.1 %) at 1 h reaction time, and the corresponding activity (1553.7 h−1) greatly surpasses not only the single‐sized mesoporous carbon and microporous activated carbon‐supported counterparts but also the previously reported Pt catalysts dispersed on other forms of carbon. Furthermore, Pt/3DHPC can be reused at least fifteen times without pronounced decay owing to the strong interaction between Pt and carbon. The present work demonstrates the validity of multiscale control in carbon‐supported Pt catalysts by overall consideration of the mass transportation, and the accessibility, quantity, and capability of active sites towards chemoselective hydrogenation of CMA, which is expected to be extended to other catalysis‐related processes.

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“…Up to date now, with combination of the effective synthesis strategies and renewable biomass, great progresses have been made in the application field of catalysis, adsorption/separation, energy conversion and storages. Several groups have summarized the recent progresses of biomassderived carbon in catalysis, [20][21][22] rechargeable lithium/sodium batteries, 23 and Song et al also gave a brief introduction of preparation and applications of crude biomass. 24 Besides the large roles in those important fields, biomass-derived carbons are also something in energy application (energy conversion and storage in electrochemical application).…”

Section: Introductionmentioning

confidence: 99%

Biomass-derived carbon: synthesis and applications in energy storage and conversion

2016

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The explosive growth of energy consumption hungers for highly efficient energy conversion and storage devices, whose innovation greatly depends on the development of advanced electrode materials and catalysts. Among those advanced materials explored, carbon materials have drawn much attention due to their excellent properties, such as high specific surface area and tunable porous structures. Challenges also come from global warming and environmental pollution, which require sustainable carbon-rich precursors for carbon materials. Hence, the use of biomass for carbon materials features the concept of Green Chemistry. This review has summarized the most advanced progress in biomass-derived carbon for the use of fuel cells, eletrocatalytic water splitting devices, supercapacitors and lithium-ion battery. Several synthetic strategies for synthesizing biomass-derived carbon, including direct pyrolysis, hydrothermal carbonization, and ionothermal carbonization, have been reviewed, and the corresponding formation mechanisms and prospects are also discussed. This provides fundamental insight and offers an important guideline for future design of biomass-derived carbon on specific energy application.Please do not adjust margins Please do not adjust margins process, the activators make great effects on the properties of the final products. Among those activators, KOH is very promising due to its lower activation temperature, hence leading to high yields, and well-defined micropore size distribution with ultrahigh SSA (up to 3000 m 2 /g). Through KOH activation, micropores and small mesopores can be introduced into the framework of various structured carbons. 33 The high SSA and increased micropore and mesopore volume demonstrate excellent properties in energy storage and conversion. Although, the activation mechanism of KOH is complex and it is not understood clearly, three main activation processes for KOH activation of carbon are accepted: 13 1) Potassium compounds, including KOH and some compounds (K 2 CO 3 and K 2 O) formed during the calcination process, react with carbon, generating the pore network; 2) the intermediate products (H 2 O and CO 2 ) contribute to the further development of the porosity via the gasification of carbon; 3) the as-prepared metallic K intercalate into the carbon lattices of carbon matrix effectively, leading to the expansion of the carbon lattices. The porous structure is created, after the metallic K and other K compounds are removed. Fig. 1 (a) Schematic diagram of the formation of HPCs: mixing the biomass with the "leavening" agents followed by pyrolysis under an inert gas, 34 (b) the SEM images with different mass ratio of cellulose, hemicellulose, and lignin. 35 Reproduced with permission from ref. 34, 35. Copyright©Fig. 20 (a) schemiatic mechanism of the synthesis of nanostructured silicon/porous carbon spheres; the charge-discharge curves and schematic diagram of the lithiationdelithiation process (inset) of (a) Si NPs and (c) N-SPC, and (d) their cycling performance at constant densi...

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Nitrogen-doped porous carbon materials: promising catalysts or catalyst supports for heterogeneous hydrogenation and oxidation

Abstract: Developing novel and efficient catalysts is a critical step in common heterogeneous hydrogenation and oxidation reactions.

Cited by 274 publications

References 189 publications

Nitrogen‐Decorated Porous Carbon Supported AgPd Nanoparticles for Boosting Hydrogen Generation from Formic Acid

Nitrogen‐Decorated Porous Carbon Supported AgPd Nanoparticles for Boosting Hydrogen Generation from Formic Acid

Three‐Dimensionally Hierarchical Pt/C Nanocomposite with Ultra‐High Dispersion of Pt Nanoparticles as a Highly Efficient Catalyst for Chemoselective Cinnamaldehyde Hydrogenation

Biomass-derived carbon: synthesis and applications in energy storage and conversion

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