Hydrogenolysis of bioglycerol to 1,2-propanediol over Ru/CeO2 catalysts: influence of CeO2 characteristics on catalytic performance

Raju, G.S.N.; Damma, Devaiah; Reddy, Padigapati S.; Rao, Komateedi N.; Reddy, Benjaram M.

doi:10.1007/s13203-014-0065-y

Cited by 5 publications

(6 citation statements)

References 38 publications

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“…CeO 2 is a unique metal oxide due to its low redox potential and high oxygen vacancy mobility, which could have a strong interaction with the active metals [27,28,29]. In recent years, CeO 2 has been widely used as a catalyst promoter or support for various reactions, such as dry reforming of methane, partial oxidation of methane, dry reforming of propane, and steam reforming of ethanol [30,31,32,33,34]. The studies indicate that the existence of CeO 2 in catalysts benefits their resistance to carbon deposition, because the coke on the catalyst could be removed by reacting with the oxygen species on the surface of CeO 2 .…”

Section: Introductionmentioning

confidence: 99%

Morphology-Dependent Catalytic Activity of Ru/CeO2 in Dry Reforming of Methane

Ren

et al. 2019

Molecules

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Three morphology-controlled CeO2, namely nanorods (NRs), nanocubes (NCs), and nanopolyhedra (NPs), with different mainly exposed crystal facets of (110), (100), and (111), respectively, have been used as supports to prepare Ru (3 wt.%) nanoparticle-loaded catalysts. The catalysts were characterized by H2-temperature programmed reduction (H2-TPR), CO– temperature programmed desorption (CO-TPD), N2 adsorption–desorption, X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM) and energy-dispersive X-ray spectroscopy (XDS). The characterization results showed that CeO2-NRs, CeO2-NCs, and CeO2-NPs mainly expose (110), (100) and (111) facets, respectively. Moreover, CeO2-NRs and CeO2-NCs present higher oxygen vacancy concentration than CeO2-NPs. In the CO2 reforming of methane reaction, Ru/CeO2-NR and Ru/CeO2-NC catalysts showed better catalytic performance than Ru/CeO2-NPs, indicating that the catalysts with high oxygen vacancy concentration are beneficial for promoting catalytic activity.

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Section: Introductionmentioning

confidence: 99%

Morphology-Dependent Catalytic Activity of Ru/CeO2 in Dry Reforming of Methane

Ren

et al. 2019

Molecules

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“…In the liquid phase, Ru- and Pt-based catalysts have been extensively studied among all other noble metals (Ru, Re, Rh, Pt, and Pd) over different supports (C, CeO 2 , bentonite, Al 2 O 3 , TiO 2 ). − Among all supported Ru catalysts, Ru/CeO 2 demonstrated the highest 1,2-PDO selectivity of 63% at 180 °C and 5 MPa pressure . A series of supported noble bimetallic catalysts were also designed and tested, but the yield of 1,2-PDO obtained was less than 50%. ,,− …”

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

confidence: 99%

“…The performance of Ru-based catalysts have been majorly investigated over C, Al 2 O 3 , ZrO 2 , TiO 2 , SiO 2 , bentonite, and basic oxide supports such as La 2 O 3 , CeO 2 , MgO, and other specific supports such as activated charcoal (AC), high surface area graphite (HSAG), carbon nanotube (CNT), and NaY, KL-zeolite. ,,,− ,,,,,− …”

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

confidence: 99%

“…The highly dispersed smaller Ru particles in the presence of mild acidity or basicity were found to favor higher 1,2-PDO formation. Moreover, strong acidic and basic sites are found to be detrimental to 1,2-PDO production, and such catalysts are more inclined to glycerol C–C bond breakage to lower alcohol ethylene glycol, lactic acid formation, or to promote the sequential hydrogenolysis of glycerol to 1-PO. , The complete glycerol conversion with 53.2% selectivity to 1,2-PDO was observed over a CeO 2 supported Ru catalyst at 200 °C and 6 MPa . Vasiliadou et al (2009) evaluated the performance of SiO 2 , ZrO 2 , and γ-Al 2 O 3 supported Ru metal catalyst and reported that the Ru/ZrO 2 catalyst was most active (40.5%) and selective to 1,2-PDO (60.5%) at 240 °C and 8 MPa pressure, which corresponds to higher Ru dispersion and acidity.…”

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

confidence: 99%

“…Further presence of basic sites favored the dehydrogenation–dehydration-hydrogenation path for glycerol hydrogenolysis . Gangadhara et al (2014) prepared CeO 2 support by different methods and found that the 5 wt % Ru impregnated over hydrothermally synthesized CeO 2 support exhibited complete conversion of glycerol with 53.2% selectivity to 1,2-PDO at 200 °C and at 6 MPa pressure owing to metal support interaction and metal- acid synergetic effect …”

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

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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Effect of reaction conditions and surface characteristics of Ru/CeO2 on catalytic performance for ammonia synthesis as a clean fuel

Javaid

Nanba

2021

International Journal of Hydrogen Energy

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Hydrogenolysis of bioglycerol to 1,2-propanediol over Ru/CeO2 catalysts: influence of CeO2 characteristics on catalytic performance

Cited by 5 publications

References 38 publications

Morphology-Dependent Catalytic Activity of Ru/CeO2 in Dry Reforming of Methane

Morphology-Dependent Catalytic Activity of Ru/CeO2 in Dry Reforming of Methane

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

Effect of reaction conditions and surface characteristics of Ru/CeO2 on catalytic performance for ammonia synthesis as a clean fuel

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