Carbon supported Pt9Sn1 nanoparticles as an efficient nanocatalyst for glycerol oxidation

Dou, Henri; Zhang, Bowei; Liu, Hai; Hong, Jian‐Hao; Yin, Shou-Wei; Huang, Yizhong; Xu, Rong

doi:10.1016/j.apcatb.2015.06.007

Cited by 55 publications

(42 citation statements)

References 40 publications

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“…124,125 A series of bimetallic PtM/C (M = Mn, Fe, Co, Ni, Cu, Zn, and Au) catalysts were developed for the oxidation of glycerol. 126 Among them, Pt 9 Sn 1 /C catalyst showed the highest activity with a 91% of glycerol conversion and a 50% yield of glyceric acid. Modified Pt NPs after the addition of Sn significantly activate oxygen molecules and/or deprotonation of hydroxyl group in glycerol, resulting in improved catalytic performance of Pt 9 Sn 1 /C material as well as stable catalytic activity for at least four recycles after treating the catalyst at 400 1C in H 2 atmosphere (entry 9, Table 1).…”

Section: Conventional Carbon Based Catalystsmentioning

confidence: 98%

Functionalised heterogeneous catalysts for sustainable biomass valorisation

et al. 2018

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Efficient transformation of biomass to value-added chemicals and high-energy density fuels is pivotal for a more sustainable economy and carbon-neutral society. In this framework, developing potential cascade chemical processes using functionalised heterogeneous catalysts is essential because of their versatile roles towards viable biomass valorisation. Advances in materials science and catalysis have provided several innovative strategies for the design of new appealing catalytic materials with well-defined structures and special characteristics. Promising catalytic materials that have paved the way for exciting scientific breakthroughs in biomass upgrading are carbon materials, metal-organic frameworks, solid phase ionic liquids, and magnetic iron oxides. These fascinating catalysts offer unique possibilities to accommodate adequate amounts of acid-base and redox functional species, hence enabling various biomass conversion reactions in a one-pot way. This review therefore aims to provide a comprehensive account of the most significant advances in the development of functionalised heterogeneous catalysts for efficient biomass upgrading. In addition, this review highlights important progress ensued in tailoring the immobilisation of desirable functional groups on particular sites of the above-listed materials, while critically discussing the role of consequent properties on cascade reactions as well as on other vital processes within the bio-refinery. Current challenges and future opportunities towards a rational design of novel functionalised heterogeneous catalysts for sustainable biomass valorisation are also emphasized.

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Section: Conventional Carbon Based Catalystsmentioning

confidence: 98%

Functionalised heterogeneous catalysts for sustainable biomass valorisation

et al. 2018

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“…K elements were doped by an ion-exchanged method, which promote the catalytic activity of noble metal based catalysts [12]. K addition leads to the formation of a well-dispersed Pt species that facilitate the activation of surface OH groups and chemisorbed oxygen [40]. The fitting analysis of these spectra re-veals that they are formed by two diff erent forms of potassium.…”

Section: Xpsmentioning

confidence: 99%

Insight into the efficient oxidation of methyl-ethyl-ketone over hierarchically micro-mesostructured Pt/K-(Al)SiO2 nanorod catalysts: Structure-activity relationships and mechanism

Jiang

Dummer

et al. 2018

Applied Catalysis B: Environmental

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Hierarchically micro-mesostructured Pt/K-Al-SiO2 catalysts with regular nanorod (Pt/KA-NRS) and spherical nanoflower-like (Pt/KA-SNFS) morphologies were prepared. The existence of Al atoms generates Brønsted acid sites and reduces silanol groups over the supports, promoting the dispersion of Pt nanoparticles and stability of catalysts. Potassium atoms balance the negative charge of supports and enhance O2 mobility. The Pt/KA-NRS catalysts exhibit unexceptionable low temperature activity, CO2 selectivity, and stability for MEK oxidation. Amongst, 0.27 wt.% Pt/KA-NRS completely converts MEK at just 170 °C (activation energy as low as 37.22 kJ• % mol −1), more than 100 °C lower than other typical Pt/Pd supported catalysts reported in the literature. Diacetyl and 2,3-butandiol are the main intermediates during MEK activation, which convert into H2O and CO2 through aldehydes and acids. The excellent catalytic activity of Pt/KA-NRS is ascribed to their regular morphology, high Pt 0 content and dispersion, excellent MEK adsorption capacity and superior O2/CO2 desorption capability under low temperature.

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“…Recently, it was reported that H-mordenite supported Au-Pt nanoparticles (NPs) [18,19] and Mg(OH) 2 supported Au-Pt and Au-Pd NPs [20] can catalyze the oxidation of glycerol to free GLYA without the addition of base, and CuO supported Au NPs is active for the selective oxidation of glycerol to DHA without NaOH [21]. At the same time, more recent works found that cuboctahedral Pt NPs [22] and Pt 9 Sn 1 /C [23] are more active for the selective oxidation of glycerol than tetrahedral Pt NPs.…”

Section: Introductionmentioning

confidence: 95%