The effects of calcination temperature of support on Au/CuO-ZrO2 catalysts for oxidation of glycerol to dihydroxyacetone

Wang, Yanxia; Yuan, Danping; Luo, Jing; Pu, Yanfeng; Li, Feng; Xiao, Fang; Zhao, Ning

doi:10.1016/j.jcis.2019.10.017

Cited by 17 publications

(12 citation statements)

References 51 publications

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“…In addition, the detailed preparation procedures were as described previously. 38 The actual molar ratios of Cu to Zr were consistent with the theoretical molar ratios.…”

Section: ■ Experimental Sectionsupporting

confidence: 75%

“…Zr(NO 3 ) 4 ·3H 2 O (99.5%), Cu(NO 3 ) 2 ·6H 2 O(99.9%), Na 2 CO 3 (AR), urea, and NaAuCl 4 ·2H 2 O were obtained from the same manufacturers as in the previous work …”

Section: Methodsmentioning

confidence: 99%

“…Zr(NO 3 ) 4 •3H 2 O (99.5%), Cu(NO 3 ) 2 •6H 2 O(99.9%), Na 2 CO 3 (AR), urea, and NaAuCl 4 •2H 2 O were obtained from the same manufacturers as in the previous work. 38 Preparation of Cu−Zr Mixed Oxide Supports. The Cu−Zr mixed oxide support was prepared by the coprecipitation method.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…ZrO 2 could be used as a support to modulate the properties of the catalyst because of the surface acidity and basicity, ,, for example, Guo et al found that after the introduction of ZrO 2 , the surface properties, and especially the basicity of the CuO–ZrO 2 mixed oxide can be adjusted. A series of Au/(CuO–ZrO 2 –T) catalysts were prepared in our previous work, and the change in calcination temperature of supports had a great influence on the catalytic properties …”

Section: Introductionmentioning

confidence: 99%

“…A series of Au/ (CuO−ZrO 2 −T) catalysts were prepared in our previous work, and the change in calcination temperature of supports had a great influence on the catalytic properties. 38 Herein, in order to further investigate the influence of the basicity of the catalyst support on the catalytic performance, a series of Cu x Zr 1−x O y was prepared by varying the molar ratio of Cu to Zr through the co-precipitation method. Then, Au was loaded by deposition−precipitation in the presence of urea.…”

Section: ■ Introductionmentioning

confidence: 99%

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Selective Oxidation of Glycerol to Dihydroxyacetone over Au/Cu_xZr_1–xO_y Catalysts in Base-Free Conditions

Wang

Yuan

et al. 2019

ACS Appl. Mater. Interfaces

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In this paper, a series of Cu–Zr mixed metal oxide-supported Au catalysts were prepared by deposition–precipitation and evaluated for selective oxidation of glycerol to dihydroxyacetone (DHA) in base-free conditions. The best catalytic performance was obtained with DHA selectivity of up to 95% and yield of 70% in 4 h, 50 °C and P O2 = 0.2 MPa over the Au/Cu0.95Zr0.05 and Au/Cu0.9Zr0.1 catalysts. Combined with the characterization results of Brunauer–Emmett–Teller, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and CO2 temperature programmed desorption, it was proposed that the content of Au0, the size of Au, and the basicity of the catalyst affected the glycerol conversion and DHA selectivity. After the catalyst was recycled four times, the glycerol conversion decreased by about 14% which might result from the carbon deposition or the byproduct adsorption and the agglomeration of Au particle.

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“…In addition, the detailed preparation procedures were as described previously. 38 The actual molar ratios of Cu to Zr were consistent with the theoretical molar ratios.…”

Section: ■ Experimental Sectionsupporting

confidence: 75%

“…Zr(NO 3 ) 4 ·3H 2 O (99.5%), Cu(NO 3 ) 2 ·6H 2 O(99.9%), Na 2 CO 3 (AR), urea, and NaAuCl 4 ·2H 2 O were obtained from the same manufacturers as in the previous work …”

Section: Methodsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Selective Oxidation of Glycerol to Dihydroxyacetone over Au/Cu_xZr_1–xO_y Catalysts in Base-Free Conditions

Wang

Yuan

et al. 2019

ACS Appl. Mater. Interfaces

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Facile conversion of glycerol to 1,3-dihydroxyacetone by using mesoporous CuO–SnO2 composite oxide supported Au catalysts

Qin

Wang

et al. 2022

J Porous Mater

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Selective catalytic oxidation of polyols, e.g., the selective catalytic oxidation of the secondary -OH bond in glycerol, remains a considerable challenge. In this study, a series of mesoporous CuO-SnO 2 composite oxides were prepared by a hard-template method and used to support Au catalysts for the selective oxidation of glycerol to 1,3-dihydroxyacetone (DHA) under base-free conditions. Catalysts with different Cu:Sn molar ratios gave different catalytic performances. A high conversion of glycerol (100%) and selectivity for DHA (94.7%) were obtained in 2 h at 80°C and P O2 = 1 MPa over the Au/CuO-SnO 2 -3:1 catalyst. Further investigation indicated that the high catalytic activity of Au/CuO-SnO 2 -3:1 is related to the small size and high dispersion of Au nanoparticles (NPs), the interactions between the Au NPs and the support, the synergistic effect between CuO and SnO 2 , and the amount of surface lattice oxygen species. Various reaction parameters, namely the glycerol:Au molar ratio, the reaction temperature, the initial O 2 pressure, the reaction time, and the support calcination temperature were studied. Although the conversion rate by the catalyst decreased after four cycles, the selectivity remained above 86%. Density functional theory calculations showed that the synergy between CuO and SnO 2 improves the catalytic activity in glycerol oxidation to DHA. The results show that mesoporous composite oxide supports have a wide range of potential applications in the selective oxidation of glycerol to other high-value-added products.

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Oxidation of glycerol to dihydroxyacetone over highly stable Au catalysts supported on mineral-derived CuO-ZnO mixed oxide

Wang,

Liu,

Zhao

et al. 2024

Applied Catalysis A: General

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The effects of calcination temperature of support on Au/CuO-ZrO2 catalysts for oxidation of glycerol to dihydroxyacetone

Cited by 17 publications

References 51 publications

Selective Oxidation of Glycerol to Dihydroxyacetone over Au/Cu_xZr_1–xO_y Catalysts in Base-Free Conditions

Selective Oxidation of Glycerol to Dihydroxyacetone over Au/Cu_xZr_1–xO_y Catalysts in Base-Free Conditions

Facile conversion of glycerol to 1,3-dihydroxyacetone by using mesoporous CuO–SnO2 composite oxide supported Au catalysts

Oxidation of glycerol to dihydroxyacetone over highly stable Au catalysts supported on mineral-derived CuO-ZnO mixed oxide

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The effects of calcination temperature of support on Au/CuO-ZrO2 catalysts for oxidation of glycerol to dihydroxyacetone

Cited by 17 publications

References 51 publications

Selective Oxidation of Glycerol to Dihydroxyacetone over Au/CuxZr1–xOy Catalysts in Base-Free Conditions

Selective Oxidation of Glycerol to Dihydroxyacetone over Au/CuxZr1–xOy Catalysts in Base-Free Conditions

Facile conversion of glycerol to 1,3-dihydroxyacetone by using mesoporous CuO–SnO2 composite oxide supported Au catalysts

Oxidation of glycerol to dihydroxyacetone over highly stable Au catalysts supported on mineral-derived CuO-ZnO mixed oxide

Contact Info

Product

Resources

About

Selective Oxidation of Glycerol to Dihydroxyacetone over Au/Cu_xZr_1–xO_y Catalysts in Base-Free Conditions

Selective Oxidation of Glycerol to Dihydroxyacetone over Au/Cu_xZr_1–xO_y Catalysts in Base-Free Conditions