Selective production of 1,2-propanediol by hydrogenolysis of glycerol over bimetallic Ru–Cu nanoparticles supported on TiO2

Salazar, Joyce B.; Falcone, Derek D.; Pham, Hien N.; Datye, Abhaya K.; Passos, Fábio B.; Davis, Robert J.

doi:10.1016/j.apcata.2014.06.002

Cited by 64 publications

(54 citation statements)

References 45 publications

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“…All catalysts presented a very low activity for the hydrogenolysis of glycerol in these reaction conditions compared with Ru catalysts tested in the same conditions. 42 However, the results can be used to better understand the requirements of the iridium catalytic sites. TOF and conversion values increased in the sequence Ir/SiO 2 < Ir/γ-Al 2 O 3 < Ir/ZrO 2 .…”

Section: Cyclohexane Conversionmentioning

confidence: 99%

Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites

Pamphile-Adrián¹,

Florez-Rodriguez²,

Passos³

2015

Journal of the Brazilian Chemical Society

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The support effect on the properties of iridium catalysts for C-C and C-O hydrogenolysis was investigated. Cyclohexane conversion and glycerol hydrogenolysis were used to compare the behavior of iridium catalysts in terms of C-C and C-O cleavage. The nature of the support influenced the catalyst performance in both cyclohexane conversion and glycerol hydrogenolysis. This effect was more evident on the product selectivity. Ir/SiO 2 catalyst presented the highest cyclohexane hydrogenolysis activity and the highest selectivity to minor hydrocarbons formed from hexane re-adsorption. For glycerol hydrogenolysis, all catalysts displayed a higher selectivity to products formed by C-O cleavage, mainly 1,2-propanediol (1,2-PDO). Ir/ZrO 2 catalyst presented the highest activity in all reaction conditions and the lowest selectivity to minor alcohols produced by C-C cleavage like methanol, ethanol and ethylene glycol. The results were explained in terms of the requirements and the structure of the catalytic sites.

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Section: Cyclohexane Conversionmentioning

confidence: 99%

Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites

Pamphile-Adrián¹,

Florez-Rodriguez²,

Passos³

2015

Journal of the Brazilian Chemical Society

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“…Rhodium (Rh) and ruthenium (Ru) photocatalysts, where base material was doped or modified with a small amount of a Rh or Ru species without changing the original crystal structure, have been used to develop visible-light-active TiO 2 or SrTiO 3 [19][20][21][22]. Kuncewicz et al obtained TiO 2 particles modified with a small amount (<0.01 mol%) of a rhodium species [16].…”

Section: Introductionmentioning

confidence: 99%

TiO2/SrTiO3 and SrTiO3 microspheres decorated with Rh, Ru or Pt nanoparticles: Highly UV–vis responsible photoactivity and mechanism

Grabowska

Marchelek

Klimczuk

et al. 2017

Journal of Catalysis

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“…The conversion to gaseous products was negligible at 200 • C. For both catalysts, the main products at 200 • C are 1,2-PG and EG, reaching 76% and 20%, respectively, on the Ru/SC sample. Most 1,2-PG selectivity can be explained due to a greater contribution of C-O cleavage reactions versus Catalysts 2017, 7, 6 8 of 13 C-C cleavage reactions that produce EG [7,31,32]. The selectivity to other products, such as methanol, ethanol, 1-propanol, and acetol is low (about 4%).…”

Section: Catalytic Activity: Glycerol Hydrogenolysis To Glycolsmentioning

confidence: 99%

“…The histogram of particle size distribution shows that the average particle diameter (d TEM ) for the Ru/SC fresh sample is 2.3 nm ( Figure 6A). reactions versus C-C cleavage reactions that produce EG [7,31,32]. The selectivity to other products, such as methanol, ethanol, 1-propanol, and acetol is low (about 4%).…”

Section: Catalytic Activity: Glycerol Hydrogenolysis To Glycolsmentioning

confidence: 99%

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Hydrothermal Stability of Ru/SiO2–C: A Promising Catalyst for Biomass Processing through Liquid-Phase Reactions

et al. 2016

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Abstract:In this work, structural and morphological properties of SiO 2 -C composite material to be used as support for catalysts in the conversion of biomass-derived oxygenated hydrocarbons, such as glycerol, were investigated in liquid water under various temperatures conditions. The results show that this material does not lose surface area, and the hot liquid water does not generate changes in the structure. Neither change in relative concentrations of oxygen functional groups nor in Si/C ratio due to hydrothermal treatment was revealed by X-ray photoelectron spectroscopy (XPS) analysis. Raman analysis showed that the material is made of a disordered graphitic structure in an amorphous silica matrix, which remains stable after hydrothermal treatment. Results of the hydrogenolysis of glycerol using a Ru/SiO 2 -C catalyst indicate that the support gives more stability to the active phase than a Ru/SiO 2 consisting of commercial silica.

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Selective production of 1,2-propanediol by hydrogenolysis of glycerol over bimetallic Ru–Cu nanoparticles supported on TiO2

Cited by 64 publications

References 45 publications

Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites

Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites

TiO2/SrTiO3 and SrTiO3 microspheres decorated with Rh, Ru or Pt nanoparticles: Highly UV–vis responsible photoactivity and mechanism

Hydrothermal Stability of Ru/SiO2–C: A Promising Catalyst for Biomass Processing through Liquid-Phase Reactions

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