Catalytic dehydroxylation of glycerol to propylene glycol over Cu–ZnO/Al2O3 catalysts: Effects of catalyst preparation and deactivation

Panyad, Suchart; Jongpatiwut, Siriporn; Sreethawong, Thammanoon; Rirksomboon, Thirasak; Osuwan, Somchai

doi:10.1016/j.cattod.2011.03.029

Cited by 48 publications

(46 citation statements)

References 23 publications

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“…A stream of H 2 was passed through the copper chromite catalyst bed at 200°C for 24 h of glycerol hydrogenolysis, which yielded more than 73% of 1,2-PD [61]. Panyad et al [62] also investigated the catalytic hydrogenolysis of glycerol in the presence of a Cu-ZnO/Al 2 O 3 catalyst in a continuous-flow fixed-bed reactor at 250°C and 32 bar H 2 ; the process yields 100% conversion to 1,2-PD. Further, Barbelli et al.…”

Section: Propylene Glycolmentioning

confidence: 99%

Conversion of crude and pure glycerol into derivatives: A feasibility evaluation

Kong

Aroua

Daud

2016

Renewable and Sustainable Energy Reviews

161

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Section: Propylene Glycolmentioning

confidence: 99%

Conversion of crude and pure glycerol into derivatives: A feasibility evaluation

Kong

Aroua

Daud

2016

Renewable and Sustainable Energy Reviews

161

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“…Very good results were achieved in this reactor system, with 90% PG selectivity at 90% glycerol conversion. Similar fixed-bed reactors have been reported in literature (44)(45)(46)(47).…”

Section: Development In Reaction Processesmentioning

confidence: 56%

Recent advancements in catalytic conversion of glycerol into propylene glycol: A review

et al. 2016

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The renewability of bio-glycerol has made it an attractive platform for the production of diverse compounds. Selective hydrogenolysis of glycerol to propylene glycol (PG) is one of the most promising routes for glycerol valorization, since this compound is an important chemical intermediate in a number of applications. In this article, advancements in the catalytic conversion of glycerol into propylene glycol are reviewed, which include advances in process development, effects of preparation and activation methods on catalytic activity and stability, and the performance of various types of catalysts. The feasibility of using bio-hydrogen and the challenges of utilizing crude glycerol for glycerol hydrogenolysis are also discussed. ARTICLE HISTORY

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“…The absence of Cu and Ni peaks suggested that the metal particles were highly dispersed into the Al 2 O 3 support so that it was beyond the detection limit of XRD [9]. Furthermore, ZnO introduction increased Lewis acidity of catalysts which was responsible for the synergistic effect between ZnO and 15Cu-15Ni/ Al 2 O 3 catalyst and enhanced the conversion of glycerol and selectivity of 1,2-PDO [22].…”

Section: Physicochemical Propertiesmentioning

confidence: 94%

Effect of ZnO incorporation on Cu–Ni/Al2O3 catalyst for glycerol hydrogenolysis in the absence of added hydrogen

Jiang

Kong

et al. 2015

Appl Petrochem Res

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A series of Cu-Ni bimetallic catalysts were developed and used for glycerol hydrogenolysis to produce 1,2-propanediol in the absence of added hydrogen along with the isopropanol as hydrogen donor. The monometallic Cu catalyst can catalyze the dehydrogenation of isopropanol effectively, but the Cu species would be oxidized to Cu ? which led to the catalyst deactivation. Ni incorporation can change the reduction behavior of Cu catalyst and the formation of Cu-Ni alloy might promote the hydrogenation of acetol. Furthermore, the effect of ZnO incorporation on the catalytic performance of Cu-Ni/Al 2 O 3 bimetallic catalyst for glycerol hydrogenolysis in the absence of added hydrogen was investigated. The addition of ZnO enhanced the acidity of catalyst surface, resulting in higher C-O bond cleavage activity. Comparing the H 2 -TPR profiles of Cu-Ni/Al 2 O 3 with Cu-Ni/ZnO-Al 2 O 3 , it could be clearly observed that the reduction temperature was decreased remarkably by the addition of ZnO. XRD and SEM images revealed that the addition of ZnO inhibited the catalyst sintering and favored the formation of the strong interaction between Cu-Ni species and Al 2 O 3 by the formation of the ZnAl 2 O 4 phase.

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Catalytic dehydroxylation of glycerol to propylene glycol over Cu–ZnO/Al2O3 catalysts: Effects of catalyst preparation and deactivation

Cited by 48 publications

References 23 publications

Conversion of crude and pure glycerol into derivatives: A feasibility evaluation

Conversion of crude and pure glycerol into derivatives: A feasibility evaluation

Recent advancements in catalytic conversion of glycerol into propylene glycol: A review

Effect of ZnO incorporation on Cu–Ni/Al2O3 catalyst for glycerol hydrogenolysis in the absence of added hydrogen

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