Catalytic performance of zinc-supported copper and nickel catalysts in the glycerol hydrogenolysis

Chimentão, R.J.; Miranda, B.C.; Ruiz, Dóris; Gispert-Guirado, Francesc; Medina, Françesc; Llorca, Jordi; Santos, João Batista Oliveira dos

doi:10.1016/j.jechem.2019.07.003

Cited by 38 publications

(31 citation statements)

References 78 publications

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“…We do not have characterization results to demonstrate this, so it is just a hypothesis. Ni has the capability to break the C-C bond effectively towards ethylene glycol production [13]. It is well known that metal leaching, metal particles sintering, the adsorption of organic species, carbon formation, etc., are considered the reasons for the catalyst deactivation [6,27,28].…”

Section: Catalyst Stability and Reusability Studymentioning

confidence: 99%

“…We do not have characterization results to demonstrate this, so it is just a hypothesis. Ni has the capability to break the C-C bond effectively towards ethylene glycol production [13].…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…Therefore, the conversion of glycerol into value-added products, such as H 2 and 1,2-propanediol, among others, is a method to improve the economics of biodiesel as it has been the case during the last decade. Many works have been published on aqueous phase hydrogenolysis (APH) of glycerol using different catalysts such as: noble metals (Pt, Ru, Pd or Rh), transition metals (Ni, Cu or Zr) and bi-metallics (Ni-Cu or Pt-Fe) supported on activated carbon, several oxides, or mixed oxides [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Study of Ni/Al-Fe Catalyst Stability in the Aqueous Phase Hydrogenolysis of Glycerol

et al. 2020

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The present work studied the stability and reusability of Ni/Al-Fe catalyst in the aqueous phase hydrogenolysis of glycerol without external hydrogen addition. The catalyst based on 28 molar % of Ni with 3/1 molar ratio of Al/Fe was prepared through co-precipitation. This catalyst presented the best performance in our last study which compares several Ni/Al-Fe catalysts with different molar ratios of Al/Fe. To see the influence of the pressurized water on the physicochemical characteristics of Ni/Al-Fe catalyst, a test of up to 9 h has been carried out. Fresh and used catalysts were characterized by various techniques: X-ray Diffraction (XRD), N2-physisorption, field emission scanning electron microscopy (FESEM) and STEM. Glycerol conversion and carbon yield to gases and liquids did not vary significantly when compared at 3 h and 9 h. Furthermore, the morphology of the catalyst remains stable after continuous recycling under severe hydrothermal conditions. The nickel rich phase of the catalyst, which was determined by XRD and scanning transmission electron microscopy (STEM) techniques, showed a stable size after 9 h under reaction.

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Section: Catalyst Stability and Reusability Studymentioning

confidence: 99%

“…We do not have characterization results to demonstrate this, so it is just a hypothesis. Ni has the capability to break the C-C bond effectively towards ethylene glycol production [13].…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of Ni/Al-Fe Catalyst Stability in the Aqueous Phase Hydrogenolysis of Glycerol

et al. 2020

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“…Then, the terminal C-OH can be dissociated in a dehydration reaction to produce acetol, which can be reduced over a metallic site into 1,2-PDO [109,137]. On the contrary, when the reaction is carried out under basic conditions, glycerol dehydrogenation over metallic particles to form glyceraldehyde is the initiation step, evolving to produce 1,2-PDO after a dehydration-hydrogenation sequence (Figure 8) [109,137] or lactic acid (LA) via the Cannizzaro reaction [138].…”

Section: Hydrogenolysis and Reduction Processesmentioning

confidence: 99%

Recent Advances in Glycerol Catalytic Valorization: A Review

et al. 2020

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Once a biorefinery is ready to operate, the main processed materials need to be completely evaluated in terms of many different factors, including disposal regulations, technological limitations of installation, the market, and other societal considerations. In biorefinery, glycerol is the main by-product, representing around 10% of biodiesel production. In the last few decades, the large-scale production of biodiesel and glycerol has promoted research on a wide range of strategies in an attempt to valorize this by-product, with its transformation into added value chemicals being the strategy that exhibits the most promising route. Among them, C3 compounds obtained from routes such as hydrogenation, oxidation, esterification, etc. represent an alternative to petroleum-based routes for chemicals such as acrolein, propanediols, or carboxylic acids of interest for the polymer industry. Another widely studied and developed strategy includes processes such as reforming or pyrolysis for energy, clean fuels, and materials such as activated carbon. This review covers recent advances in catalysts used in the most promising strategies considering both chemicals and energy or fuel obtention. Due to the large variety in biorefinery industries, several potential emergent valorization routes are briefly summarized.

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“…The growth of high value added chemicals from low grade crude glycerol is the only way to improve the glycerol value and replace the disposal and purification costs with a wiser application. Techniques like hydrogenolysis (Dieuzeide et al, 2017;Cai et al, 2019;Xu et al, 2019;Chimentão et al, 2020), dehydration (dos Santos et al, 2019;Jia et al, 2019;Zhang et al, 2019), photocatal ysis (Minero et al, 2012;Dodekatos et al, 2018;Mendoza et al, 2019), etherification (D. Bozkurt et al, 2015;Lemos et al, 2018;Liu et al, 2019), selective oxidation (Han et al, 2019;Yan et al, 2019;Zhao et al, 2019), oligomerization (Karam et al, 2016;Galy et al, 2017), carboxylation (Aresta et al, 2006;Narkhede and Patel, 2016;Okoye and Hameed, 2016) and fermentation (Rukowicz and Alejski, 2018;Haosagul et al, 2019;Zhu et al, 2019) have been investigated for glycerol transformation. Yet, recently, the electrochemical conversion technique has shown higher economic interest.…”

Section: Introductionmentioning

confidence: 99%

A review of recent developments on kinetics parameters for glycerol electrochemical conversion – A by-product of biodiesel

Rahim

Lee

Abnisa

et al. 2020

Science of The Total Environment

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Solilltkln \'•rilobb Cam:crcritlo.molsl>vcrol Céll\Cefll'll.ioncild«trol)'II: pllor'"'tloemtJI) / I! a Glycerol is a by product produced from biodiesel, fatty acid, soap and bioethanol industries. Today, the value of glycerol is decreasing in the global market due to glycerol surplus, which primarily resulted from the speedy expansion of biodiesel producers around the world. Numerous studies have proposed ways of managing and treating glycerol, as well as converting it into value added compounds. The electrochem ical conversion method is preferred for this transformation due to its simplicity and hence, it is discussed in detail. Additionally, the factors that could affect the process mechanisms and products distribution in the electrochemical process, including electrodes materials, pH of electrolyte, applied potential, current density, temperature and additives are also thoroughly explained. Value added compounds that can be produced from the electrochemical conversion of glycerol include glyceraldehyde, dihydroxyacetone, gly colic acid, glyceric acid, lactic acid, 1 :i. propanediol, 1,3 propanediol, tartronic acid and mesoxalic acid. These compounds are found to have broad applications in cosmetics, pharmaceutical, food and polymer industries are also described. This review will be devoted to a comprehensive overview of the current sce nario in the glycerol electrochemical conversion, the factors affecting the mechanism pathways, reaction rates, product selectivity and yield. Possible outcomes obtained from the process and their benefits to the industries are discussed. The utilization of solid acid catalysts as additives for future studies is also suggested

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Catalytic performance of zinc-supported copper and nickel catalysts in the glycerol hydrogenolysis

Cited by 38 publications

References 78 publications

Study of Ni/Al-Fe Catalyst Stability in the Aqueous Phase Hydrogenolysis of Glycerol

Study of Ni/Al-Fe Catalyst Stability in the Aqueous Phase Hydrogenolysis of Glycerol

Recent Advances in Glycerol Catalytic Valorization: A Review

A review of recent developments on kinetics parameters for glycerol electrochemical conversion – A by-product of biodiesel

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