Selective oxidation of glycerol to tartronic acid over Pt/N-doped mesoporous carbon with extra framework magnesium catalysts under base-free conditions

Zhan, Tong; Liu, Weibing; Teng, Junjiang; Yue, Chaochao; Li, Dehao; Wang, Suhua; Tan, Hua

doi:10.1039/c8cc10273b

Cited by 29 publications

(22 citation statements)

References 21 publications

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“…Developing profitable applications of glycerol (GLY), the main cheap by product in biodiesel production process, is of great importance for the sustainable extension of biodiesel industry chain. [1][2][3][4][5] Up to date, selective oxidation of GLY on heterogeneous catalysts without the addition of liquid alkali attracted much attention due to the production of various valuable fine chemicals such as glyceric acid (GLYA), glycollic acid (GLYOA) and dihydroxyacetone (DHA). 6 Moreover, it offers an efficiently, environmentally and economically alternative to traditional time-consuming, polluting base (or heavy metal oxidant)promoted and costly methods as well as biological oxidation processes.…”

Section: Introductionmentioning

confidence: 99%

Au‐Promoted Pt nanoparticles supported on MgO/SBA‐15 as an efficient catalyst for selective oxidation of glycerol

et al. 2021

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A systematic study of Au-promoted and unpromoted Pt/MgO/SBA-15 catalyst is developed to separate the promoter effect from electron transfer effect between Au and Pt. Multi-characterizations revealed that Au and Pt metals in these bimetallic catalysts mainly exist in the form of alloy, and the main role of Au is to reduce the size of AuPt alloy nanoparticles, thus enhancing the adsorption and activation of intermediate products. Through the optimization of various factors (including MgO content, Au/Pt molar ratio, reaction temperature and time), the Au 1 Pt 2 /MgO/SBA-15 (0.05) catalyst exhibits excellent catalytic activity and glyceric acid selectivity for the selective oxidation of glycerol. Density functional theory calculation confirmed that the synergistic effect between Pt and Au active sites could facilitate the oxidation of primary hydroxyl group by promoting the activation of C H bond and the oxidation of aldehyde group. The results may give insights on designing effective Pt based bimetallic catalyst for selective oxidation of glycerol.

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Section: Introductionmentioning

confidence: 99%

Au‐Promoted Pt nanoparticles supported on MgO/SBA‐15 as an efficient catalyst for selective oxidation of glycerol

et al. 2021

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“…Mesoporous materials are considered as the ideal choices as catalyst supports due to their large surface areas, tunable pore size, and thermal and chemical stability [23][24][25]. Particularly, functionalized supports, such as nitrogen doped mesoporous carbon, have received great interest because the incorporation of N atoms into mesoporous carbon frameworks not only alters the mechanical and electronic properties, and the surface chemical states, of carbon materials, but also is efficient for the stabilization of the metal nanoparticle [26,27].…”

Section: Introductionmentioning

confidence: 99%

Highly Dispersed Pt Nanoparticles on N-Doped Ordered Mesoporous Carbon as Effective Catalysts for Selective Hydrogenation of Nitroarenes

et al. 2020

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Highly-dispersed Pt nanoparticles supported on nitrogen-modified CMK-3 mesoporous carbon (Pt/N-CMK-3) were first fabricated by a two-step impregnation route. The influences of N content on the catalyst porous structure, Pt nanoparticle size, surface properties, and interaction between Pt species and the support were investigated in detail using N2 sorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectra (XPS). The N species acted as anchoring sites for the stabilization of Pt particles. Benefiting from the formation of ultrafine metal nanoparticles, the Pt/N-CMK-3 exhibited excellent catalytic activity and selectivity for the selective hydrogenation of nitro aromatics to the corresponding anilines with hydrogen. The Pt/N-CMK-3 catalyst could be reused eight times and keep its catalytic performance.

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“…Additionally, large quantities of glycerol are available as a reaction byproduct because of the development of biodiesel production by transesterification of vegetable oils [7]. Numerous main pathways of glycerol transformation have been reported in literature involving hydrogenolysis [8], dehydration [9], oxidation [10], carbonation [5,11], etherification [12,13], esterification [14,15], acetalization [14,16] and ketalization [17,18]. Therefore, a considerable number of chemical intermediates and commodities can be obtained from glycerol through optimized catalytic routes, as shown in Figure 1 [19].…”

Section: Introductionmentioning

confidence: 99%

Green Production of Glycerol Ketals with a Clay-Based Heterogeneous Acid Catalyst

et al. 2019

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Glycerol remains a bottleneck for the biodiesel industry as well as an opportunity from the biorefinery perspective, having a notable reactivity as a platform chemical. In particular, glycerol ketals can be envisaged as oxygenates for fuel formulation. In this study, we have focused on the green synthesis of glycerol ketals by reacting glycerol with acyclic (acetone, butanone) and cyclic (cyclohexanone) ketones in the presence of an acid activated clay Tunisian AC in homogeneous systems under quasi-solventless conditions. These reactions were followed by on-line Fourier Transform Infrared Spectroscopy (FTIR) (namely, ReactIR 10). Firstly, the contacting time was selected studying the activity, stability and chemical characteristics of a set of catalysts. The 1-h activated clay AC was further characterized by X-Ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electronic Microscopy with Energy Dispersive Spectroscopy (SEM/EDS). Finally, the effect of the main operational variables (catalyst concentration, reagents molar ratio, time and temperature) were checked and we reflected on adequate second-order kinetic models with partial first-order deactivation.

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Selective oxidation of glycerol to tartronic acid over Pt/N-doped mesoporous carbon with extra framework magnesium catalysts under base-free conditions

Abstract: Pt/N-doped carbons with extra framework magnesium catalysts exhibit high activity and selectivity in glycerol oxidation to tartronic acid under base-free conditions.

Cited by 29 publications

References 21 publications

Au‐Promoted Pt nanoparticles supported on MgO/SBA‐15 as an efficient catalyst for selective oxidation of glycerol

Au‐Promoted Pt nanoparticles supported on MgO/SBA‐15 as an efficient catalyst for selective oxidation of glycerol

Highly Dispersed Pt Nanoparticles on N-Doped Ordered Mesoporous Carbon as Effective Catalysts for Selective Hydrogenation of Nitroarenes

Green Production of Glycerol Ketals with a Clay-Based Heterogeneous Acid Catalyst

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