Aqueous phase hydrogenolysis of glycerol to bio-propylene glycol over Pt–Sn catalysts

Barbelli, María Laura; Santori, Gerardo Fabián; Nichio, Nora N.

doi:10.1016/j.biortech.2012.02.053

Cited by 78 publications

(51 citation statements)

References 19 publications

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“…This explains the why the reforming ratio of hydrogen to carbon dioxide was lower for the case of 1 g of 5% Pt/Al 2 O 3 . In a similar work under N 2 pressure, the PtSn0.2 catalyst showed 55% of glycerol conversion to liquid with 59% selectivity to propylene glycol leading to the highest yield to propylene glycol 32% [48]. The conversion to gaseous products, to liquids products and total conversion as a function of the reaction time, for three different catalyst weights (0.5, 1, 2.5 g of 5% Pt/Al 2 O 3 ) and 1 wt.% glycerol solution at 240 C are shown in Fig.…”

Section: Effect Of Catalyst Concentrationmentioning

confidence: 88%

Aqueous phase reforming (APR) of glycerol over platinum supported on Al 2 O 3 catalyst

Seretis

Tsiakaras

2016

Renewable Energy

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a b s t r a c tThe glycerol's APR reaction over 5% Pt/Al 2 O 3 catalyst for H 2 production in a batch reactor is investigated in the present work. The effect of the operating parameters, such as the: i) reaction time, ii) operating temperature, iii) glycerol concentration and iv) catalyst concentration on: a) the gaseous and liquid products selectivity, b) the glycerol's conversion and c) the H 2 yield is investigated. Initially, the glycerol's APR is studied at various temperature (200, 220, 240 C) and reaction time (30, 60, 120, 240 min), using 1 wt.% or 10 wt.% glycerol solution and 0.5, 1, 2.5 g of 5% Pt/Al 2 O 3 catalyst weight.H 2 , CO, CH 4 and CO 2 are mainly detected in the gaseous phase and acetaldehyde, acetone, methanol, ethanol, 1-propanol, acetol, lactic acid, propylene glycol and ethylene glycol, in the liquid one. It is found that the optimum conditions were: 1 g of 5% Pt/Al 2 O 3 , 1 wt.% glycerol solution, 240 C and 4 h of reaction time. Under these conditions the total conversion of glycerol is found to be~84% (~41% of gaseous and 39% of liquid products), H 2 yield 14.1%, CH 4 yield 3.1% and propylene glycol (the main liquid product) yield 25%. It is also found that, for 2.5 g of 5% Pt/Al 2 O 3 , 1 wt.% glycerol solution, 240 C and 4 h of reaction time results the total conversion of glycerol is found to be~68% (~45% of gaseous and 17% of liquid products), H 2 yield 16.5%, CH 4 yield 7.4% and propylene glycol yield 8.1%. The increase of catalyst weight leads mostly to gaseous products.

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Section: Effect Of Catalyst Concentrationmentioning

confidence: 88%

Aqueous phase reforming (APR) of glycerol over platinum supported on Al 2 O 3 catalyst

Seretis

Tsiakaras

2016

Renewable Energy

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“…Further, Barbelli et al. [58] demonstrated the use of a bimetallic catalyst (Pt/SiO 2 ) in the hydrogenolysis of glycerol yielded 83% of 1,2-PD at 200°C under 16 bar H 2 -pressurized conditions.…”

Section: Propylene Glycolmentioning

confidence: 97%

“…Propylene glycol [1,2-propanediol (1,2-PD)] is a chemical product originally derived from propylene oxide through hydrolysis [58,59]. 1,2-PD is a potential replacement for ethylene glycol.…”

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

167

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“…This reaction produces principally 1,2-propylene glycol (1,2-PG), through a mechanism that may proceed in the following ways: (i) a first dehydration on the metal site or acid sites on the support to produce acetol as intermediate and (ii) hydrogenation of acetol on the metal site to generate 1,2-PG (Scheme 1). It was found that for a support presenting strong acid properties, the reaction can lead to a strong dehydration that produces acrolein [29], whereas when glycerol reacts directly with hydrogen by a C-C cleavage, the reaction produces ethylene glycol (EG) and other degradation products, such as methanol and ethanol, which are favored with temperature [30]. Accordingly, the hydrogenolysis tests were carried out at 200 °C to favor the production of 1,2-PG.…”

Section: Catalytic Activity: Glycerol Hydrogenolysis To Glycolsmentioning

confidence: 99%

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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Aqueous phase hydrogenolysis of glycerol to bio-propylene glycol over Pt–Sn catalysts

Cited by 78 publications

References 19 publications

Aqueous phase reforming (APR) of glycerol over platinum supported on Al 2 O 3 catalyst

Aqueous phase reforming (APR) of glycerol over platinum supported on Al 2 O 3 catalyst

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

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

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