Glycerol Dehydration to Acrolein over Activated Carbon-Supported Silicotungstic Acids

Ning, Lili; Ding, Yunjie; Chen, Weimiao; Gong, Liang; Lin, Rui‐Biao; Lü, Yuan; Xin, Qin

doi:10.1016/s1872-2067(08)60026-1

Cited by 71 publications

(19 citation statements)

References 8 publications

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“…The Keggin-anion density at the surface of the support was identified as a key parameter for tuning the activity and the selectivity of the HPA for acrolein production, which is in good agreement with the conclusions of Ning et al who used activated carbon-supported silicotungstic acid catalysts. [46] The latter claimed that a 10 wt % H 4 SiW 12 O 40 supported catalyst gives the best acrolein space-time yield ever reported in the literature (i.e., 68.5 10…”

Section: Catalyst Acidity As An Important Parametermentioning

confidence: 99%

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Towards the Sustainable Production of Acrolein by Glycerol Dehydration

et al. 2009

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The massive increase in biodiesel production by transesterification of vegatable oils goes hand-in-hand with the availability of a large volume of glycerol, which must be valorized. Glycerol dehydration to acrolein over acid catalysts is one of the most promising ways of valorization, because this compound is an important chemical intermediate used in, for example, the DL-methionine synthesis. In this Minireview, we give a detailed critical view of the state-of-the-art of this dehydration reaction. The processes developed in both the liquid and the gas phases are detailed and the best catalytic results obtained so far are reported as a benchmark for future developments. The advances on the understanding of the reaction mechanism are also discussed and we further focus particularly on the main obstacles for an immediate industrial application of this technology, namely catalyst coking and crude glycerol direct-use issues.

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Section: Catalyst Acidity As An Important Parametermentioning

confidence: 99%

“…However, another method to calculate the STY takes into account only the active phase mass, and when using this method the best result was achieved by Ning et al with an activated carbonsupported silicotungstic acid catalyst (10 wt % H 4 SiW 12 O 40 ). [64] The STY was 68.5 10…”

mentioning

confidence: 97%

Towards the Sustainable Production of Acrolein by Glycerol Dehydration

et al. 2009

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“…Recently, Ding et al [19] published that silicotungstic acids supported on activated carbon leads to 75% acrolein selectivity at 93% glycerol conversion under He atmosphere at 330°C.…”

Section: Introductionmentioning

confidence: 99%

Conversion of Glycerol to Acrolein in the Presence of WO3/ZrO2 Catalysts

2009

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“…Various solid acid catalysts, viz. metal phosphates, 8,9,[13][14][15][16] metal sulfates, 17 metal oxides, [17][18][19] supported heteropolyacids (HPAs) 17,[20][21][22][23][24][25][26] and zeolites, 11,17,27,[28][29][30][31][32] have been reported. HPAs with well defined Keggin structures are well-known solid acid catalysts.…”

Section: Introductionmentioning

confidence: 99%

Gas-phase Dehydration of Glycerol over Supported Silicotungstic Acids Catalysts

Kim¹,

Jung²,

Park³

2010

Bulletin of the Korean Chemical Society

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The gas-phase dehydration of glycerol to acrolein was carried out over 10 wt % HSiW catalysts supported on different supports, viz. γ-Al2O3, SiO2-Al2O3, TiO2, ZrO2, SiO2, AC, CeO2 and MgO. The same reaction was also conducted over each support without HSiW for comparison. Several characterization techniques, N2-physisorption, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), the temperature-programmed desorption of ammonia (NH3-TPD), temperature-programmed oxidation (TPO) with mass spectroscopy and CHNS analysis were employed to characterize the catalysts. The glycerol conversion generally increased with increasing amount of acid sites. Ceria showed the highest 1-hydroxyacetone selectivity at 315 o C among the various metal oxides. The supported HSiW catalyst showed superior catalytic activity to that of the corresponding support. Among the supported HSiW catalysts, HSiW/ZrO2 and HSiW/SiO2-Al2O3 showed the highest acrolein selectivity. In the case of HSiW/ZrO2, the initial catalytic activity was recovered after the removal of the accumulated carbon species at 550 o C in the presence of oxygen.

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Glycerol Dehydration to Acrolein over Activated Carbon-Supported Silicotungstic Acids

Cited by 71 publications

References 8 publications

Towards the Sustainable Production of Acrolein by Glycerol Dehydration

Towards the Sustainable Production of Acrolein by Glycerol Dehydration

Conversion of Glycerol to Acrolein in the Presence of WO3/ZrO2 Catalysts

Gas-phase Dehydration of Glycerol over Supported Silicotungstic Acids Catalysts

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