Platinum nanoparticles supported on N-doped carbon nanotubes for the selective oxidation of glycerol to glyceric acid in a base-free aqueous solution

Chen, Shasha; Qi, Puyu; Jin, Changqing; Yuan, Youzhu

doi:10.1039/c5ra02112j

Cited by 63 publications

(65 citation statements)

References 54 publications

(116 reference statements)

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“…The incorporation of basic sites in catalyst support as solid base additives to replace liquid alkalis is believed to tune surface electron reconfigurations of metal for promoting oxidation reactions. Pt nanoparticles immobilized on anion exchange resins, nitrogen doped carbon nanotubes (entry#10 in Table ) and mesoporous carbon nitride (Figure (a), entry#8 in Table ) show synergistic activity during glycerol oxidation to glyceric acid. Nitrogen‐doped carbon materials are found to accelerate the activation of O−H bond in glycerol molecules to alkoxide .…”

Section: Figurementioning

confidence: 99%

“…Pt nanoparticles immobilized on anion exchange resins, nitrogen doped carbon nanotubes (entry#10 in Table ) and mesoporous carbon nitride (Figure (a), entry#8 in Table ) show synergistic activity during glycerol oxidation to glyceric acid. Nitrogen‐doped carbon materials are found to accelerate the activation of O−H bond in glycerol molecules to alkoxide . Electron donating groups can anchor Pt particles effectively while promoting nucleophilic attack on terminal carbon and activation of C−H bond in glycerol molecules.…”

Section: Figurementioning

confidence: 99%

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Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Jin

Fang

Wang

et al. 2018

The Chemical Record

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Conversion of biomass to chemicals provides essential products to human society from renewable resources. In this context, achieving atom‐economical and energy‐efficient conversion with high selectivity towards target products remains a key challenge. Recent developments in nanostructured catalysts address this challenge reporting remarkable performances in shape and morphology dependent catalysis by metals on nano scale in energy and environmental applications. In this review, most recent advances in synthesis of heterogeneous nanomaterials, surface characterization and catalytic performances for hydrogenation and oxidation for biorenewables with plausible mechanism have been discussed. The perspectives obtained from this review paper will provide insights into rational design of active, selective and stable catalytic materials for sustainable production of value‐added chemicals from biomass resources.

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Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Jin

Fang

Wang

et al. 2018

The Chemical Record

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“…There are many reports on the oxidation of glycerol over Pt‐ and Pd‐based anode catalysts in both acidic and basic solutions. Pt acts as a universal catalyst in the oxidation of small organic molecules . Nevertheless, this metal is expensive, because only small amounts of Pt are available in the earth's crust.…”

Section: Figurementioning

confidence: 99%

Effect of Co‐catalyst on the Selective Electrooxidation of Glycerol over Ruthenium‐based Nanomaterials

et al. 2016

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Ruthenium‐based Pd and Pt nanoparticles were prepared by mild microwave‐assisted heating and were characterized by X‐ray diffraction and transmission electron microscopy. The activities of these catalysts during the oxidation of glycerol in alkaline media were studied by electrochemical, analytical, and in situ spectroscopy techniques. Changing the noble metal (Pd or Pt) allowed the selectivity of the catalysts to be tailored during the electrooxidation of glycerol. This introduces the possibility of utilizing the catalysts in cogeneration processes for renewable energy sources and also of employing the catalysts to produce value‐added molecules selectively. High‐performance liquid chromatography evidenced that the PtRu material had excellent catalytic activity in the selective oxidation of glycerol to dihydroxyacetone, whereas the PdRu anode favored the production of glycerate.

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“…Chen et al reported oxidation of glycerol over reusable Pt catalysts supported on nitrogen-doped carbon nanotubes (Pt/N-CNTs) with 0.1 MPa O2 at 333 K in base-free aqueous solution formed glyceric acid with 43 % selectivity and 51 % conversion 75) . TPD analyses indicated that the surface of the CNTs had basic sites originating from doped nitrogen atoms.…”

Section: Oxidative Transformations Of Glycerolmentioning

confidence: 99%

金属担持触媒を用いたバイオマス由来アルコールの選択的酸化反応

Nishimura

Ebitani

2017

J. Jpn. Petrol. Inst.

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Simple transformation of sustainable biomass-resources to value-added chemicals and fuels has become important to diminish our heavy reliance on decreasing petroleum resources. Biomass-derived materials with hydroxyl groups such as 5-hydroxymethylfurfural (HMF) and glycerol can be obtained from sugars directly and transesterification of triglycerides with methanol as by-products, respectively. These chemicals are versatile starting materials because hydroxyl groups can be easily converted to afford value-added chemicals and fuels under oxidative/reductive conditions using supported metal catalysts. This review overviews recent studies on supported metal catalyzed oxidation reactions of HMF, glycerol and biomass-derived aliphatic a,w-diols together with our research to develop highly efficient catalytic systems for bio-refining, based on petroleum conversion and nanotechnologies. Especially, role of external bases in the selective oxidation of biomass-derived alcohols will be discussed. We found that external base-free oxidation of HMF and glycerol is possible if basic supports are used. The activity of alloyed metal nanoparticles for selective oxidation of aliphatic a,w-diols to w-hydroxycarboxylic acids in basic aqueous media at high-pH value is also demonstrated. Keywords5-Hydroxymethylfurfural, Glycerol, Aliphatic a,w-diols, Selective oxidation, Supported metal catalyst, Bimetallic nanoparticle DOI: doi.org/10.1627/jpi.60.72 To whom correspondence should be addressed. E-mail: ebitani@jaist.ac.jp using molecular oxygen as the oxidant 18) . For example, Sahu and Dhepe compared the catalytic performance of various metal-oxide supported Pt catalysts with 0.1 MPa O2 in the presence of NaOH (1 equiv.) at 348 K for 12 h 19) . Under the same reaction conditions, Pt/ γ-A12O3, Pt/ZrO2, and Pt/C showed high catalytic activity with FDCA yields of 96, 94, and 89 %, respectively. In contrast, Pt supported on reducible TiO2 and CeO2 produced little FDCA (2 % and 8 % yields) even with ca. 100 % HMF conversion. Cai et al. reported superior catalytic performance of Au nanoparticles (1 nm size) encapsulated in the supercage of HY zeolite for selective HMF oxidation into FDCA with 99 % FDCA yield in water under 0.3 MPa O2 in the presence of NaOH at 333 K 20) . It has been reported the structures of Au nanoparticles and HY zeolite are stable under these conditions, and the Au/HY catalyst is reusable for several catalytic cycles. Negatively-charged Au nanoparticles may be responsible for this excellent catalytic performance.Pasini et al. reported AuCu bimetallic alloy catalyst (4.4 nm diameter) supported on TiO2 for HMF oxidation to FDCA under 1 MPa O2 in the presence of NaOH at 368 K to afford 99 % FDCA yield with complete HMF conversion 21) . A strong synergistic effect is evident with the addition of Cu to Au, especially for catalyst reusability without significant leaching of metal nanoparticles. However, stability test experiments showed the final product is mainly 5-hydroxymethyl-2-furancaoboxylic acid (HMFCA) instead...

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Platinum nanoparticles supported on N-doped carbon nanotubes for the selective oxidation of glycerol to glyceric acid in a base-free aqueous solution

Cited by 63 publications

References 54 publications

Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Effect of Co‐catalyst on the Selective Electrooxidation of Glycerol over Ruthenium‐based Nanomaterials

金属担持触媒を用いたバイオマス由来アルコールの選択的酸化反応

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