CuAl2O4–CuO–Al2O3 catalysts prepared by flame-spray pyrolysis for glycerol hydrogenolysis

Kunthakudee, Naphaphan; Khemthong, Pongtanawat; Luadthong, Chuleeporn; Panpranot, Joongjai; Mekasuwandumrong, Okorn; Witoon, Thongthai; Faungnawakij, Kajornsak

doi:10.1016/j.mcat.2021.111426

Cited by 11 publications

(11 citation statements)

References 46 publications

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“…This was due to the coking and metal sintering probably arising from the pyrolysis preparation technique as well as operating reaction conditions of higher temperature. 89 The activity testing of the 60% Cu/Al 2 O 3 in a continuous down-flow fixed bed reactor shows that an increase in catalyst size from 0.1-0.16 (in a batch reactor) to 1.6-2.5 (in a continuous reactor) transfers the process to an intermediate mode between kinetic and inter diffusion-controlled reaction regime. Over the same catalysts, the optimized reaction conditions for glycerol hydrogenolysis in a fixed bed reactor are temperature ≤250 °C, 50 bar H 2 , superficial liquid velocity 0.55 (m 3 m −2 h −1 ) giving 1,2-PDO selectivity of 91.5% with glycerol conversion of 80-95%.…”

Section: Supported Cu Based Catalystsmentioning

confidence: 99%

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

2022

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Section: Supported Cu Based Catalystsmentioning

confidence: 99%

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

2022

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“…Higher selectivity to 1,2-PDO (∼83%) was also observed over a Cu-ZnO catalyst owing to acidity incorporated by ZnO and small Cu particle size; however, the catalyst was not active, and glycerol conversion was limited to only ∼22% . The CuO-CuAl 2 O 4 -Al 2 O 3 mixed phase catalyst prepared by flame-spray pyrolysis results 55.5% conversion and 50.9% yield to 1,2-PDO at 5 MPa H 2 and 220 °C due to synergy among the different phases …”

Section: Classification and Overview Of Catalysts Developed For Liqui...mentioning

confidence: 90%

“…Al sites and the copper sites present on hydroxylated alumina showed similar affinity toward the adsorption of glycerol and acetol, respectively. Al sites revealed a lower energy barrier for the cleavage of the O–H bond of glycerol with respect to the Cu site …”

Section: Classification and Overview Of Catalysts Developed For Liqui...mentioning

confidence: 99%

“…142 The CuO-CuAl 2 O 4 -Al 2 O 3 mixed phase catalyst prepared by flame-spray pyrolysis results 55.5% conversion and 50.9% yield to 1,2-PDO at 5 MPa H 2 and 220 °C due to synergy among the different phases. 143 A catalyst based on density functional theory (DFT) could be more fruitful as it reduces the time and resources to get a desired catalyst. The effect of partial hydration of alumina support in the Cu/Al 2 O 3 catalyst has been investigated by density functional theory (DFT) calculations.…”

Section: Performance Of Non-noble Monometallic Catalystmentioning

confidence: 99%

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Review of the Development of Heterogeneous Catalysts for Liquid and Vapor Phase Hydrogenolysis of Glycerol to Propylene Glycol (1,2-Propanediol): State-of-the-Art and Outlook

Pandey

Biswas

2023

Energy Fuels

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In the last two decades, various glycerol value addition techniques have been developed and discussed in the literature. Among all these processes, conversion of glycerol to 1,2-propanediol (1,2-PDO) has been recognized as one of the promising and commercially attractive glycerol value addition routes. This review is an attempt to scan out the progress in catalysts design and development for liquid and vapor phase glycerol hydrogenolysis for the production of 1,2-PDO. The development of supported and mixed metal oxide catalysts with their novel catalytic characteristics for glycerol conversion and 1,2-PDO selectivity has been scrutinized systematically. It was observed that among the nonnoble metal catalysts, Cu-based catalysts have shown promising activity toward 1,2-PDO; however, their stability is an issue. Among noble metals, Pt-and Ru-based catalysts were reported active for glycerol conversion. Comparatively, catalysts composed of Pt, Ru, Pd as a noble metal, and Cu as a non-noble metal have resulted in higher catalytic activity and 1,2-PDO selectivity. This review also summarizes different reaction pathways for hydrogenolysis of glycerol to 1,2-PDO, the effect of additives (solid acid and base), and methods of catalyst preparation on the catalyst performances. Further, glycerol hydrogenolysis with in situ H 2 production by glycerol reforming or by chemical transfer hydrogen using various hydrogen donors and the effect of different solvents on the glycerol hydrogenolysis process are also discussed. Reaction kinetic models are also included at the end.

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“…Glycerol dehydration is influenced by the reaction time. Since the dehydration of glycerol is a multi-step cascade reaction that takes time to complete, longer reaction times appear to produce higher product yields [172][173][174]. On the other hand, reaction pressure has a great effect on glycerol dehydration.…”

Section: Some Special Process Featuresmentioning

confidence: 99%

A Review on Catalytic Dehydration of Glycerol to Acetol

Basu

Sen

2021

ChemBioEng Reviews

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The renewability of glycerol has made it an appealing medium for the processing of various compounds. Selective dehydration of glycerol to acetol is one of the promising glycerol valorizations. The performance and recent progress of those typical and most frequently mentioned catalysts for the synthesis of acetol from glycerol, including noble metals and transition-based metals, are summarized in detail. A Cu-based catalyst is identified as an appropriate catalyst for the synthesis of the glycerol dehydration route. In addition, advances in process development of several solid supports, the effects of catalyst preparation methods of suitable supports on catalytic activity, and the performance of catalysts' considering the catalytic conversion of glycerol to acetol are reviewed.

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CuAl2O4–CuO–Al2O3 catalysts prepared by flame-spray pyrolysis for glycerol hydrogenolysis

Cited by 11 publications

References 46 publications

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

Review of the Development of Heterogeneous Catalysts for Liquid and Vapor Phase Hydrogenolysis of Glycerol to Propylene Glycol (1,2-Propanediol): State-of-the-Art and Outlook

A Review on Catalytic Dehydration of Glycerol to Acetol

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