Catalytic dehydration of biomass-derived polyols in sub- and supercritical water

Lehr, Vanessa; Sarlea, Michael; Ott, Lothar; Vogel, Herbert

doi:10.1016/j.cattod.2006.11.014

Cited by 99 publications

(58 citation statements)

References 7 publications

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“…Pressure required in this system was lower to that reported in the absence of acid additives [12,13]. The same group reported similar results for a higher pressurized protocol (360°C, 340 bar and addition of ZnSO 4 ) [14].…”

Section: Glycerol Dehydrationsupporting

confidence: 66%

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Continuous flow transformations of glycerol to valuable products: an overview

Len

Luque

2014

Sustain Chem Process

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Glycerol conversion to valuable products has been a research avenue that attracted a significant interest in recent years due to its large available volumes (as by-product of biodiesel production) and the different possibilities for chemical and biological conversion into high added value chemicals profiting from the unique presence of three hydroxyl groups in its structure. The utilization of continuous flow processes in combination with transformation of platform chemicals (e.g. glycerol) can offer several advantages to batch processes in view of their potential implementation in industry. This minireview has been aimed to highlight most recent key continuous flow systems for glycerol valorization to valuable products using different types of catalysts and processes.

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Section: Glycerol Dehydrationsupporting

confidence: 66%

“…The double dehydration of glycerol could be achieved under sub-and supercritical water as reaction media [12][13][14][15]. The critical temperature and pressure of water were 374°C and 220 bar, respectively.…”

Section: Glycerol Dehydrationmentioning

confidence: 99%

Continuous flow transformations of glycerol to valuable products: an overview

Len

Luque

2014

Sustain Chem Process

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“…Therefore the use of carbohydrates as raw materials for the production of basic chemicals is an area of increasing interests [7][8][9][10][11]. In this sense, a variety of glycols (1,2-ethanediol, 1,2-propanediol, 1,2-butanediol or 2,3-butanediol) can be obtained from carbohydrates [1][2][3][4][5]12] as well as from glycerol [13,14] via bio-or chemocatalytic reactions. Those glycols could be used as starting reactants to obtain products with higher added value.…”

Section: Introductionmentioning

confidence: 99%

Biomass into chemicals: One-pot two- and three-step synthesis of quinoxalines from biomass-derived glycols and 1,2-dinitrobenzene derivatives using supported gold nanoparticles as catalysts

Climent

Corma

Hernández

et al. 2012

Journal of Catalysis

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ElsevierCliment Olmedo, MJ.; Corma Canós, A.; Hernández, JC.; Hungría, AB.; Iborra Chornet, S.; Martínez Silvestre, S. (2012). Biomass into chemicals: One-pot two-and three-step synthesis of quinoxalines from biomass-derived glycols and 1,2-dinitrobenzene derivatives using supported gold nanoparticles as catalysts. AbstractAn efficient and selective one-pot two steps, method for the synthesis of quinoxalines by oxidative coupling of vicinal diols with 1,2-phenylenediamine derivatives, has been developed by using gold nanoparticles supported on nanoparticulated ceria (Au/CeO 2 ) or hydrotalcite (Au/HT) as catalysts and air as oxidant, in absence of any homogeneous base. Reaction kinetics shows that the reaction controlling step is the oxidation of the diol to α-hydroxycarbonyl compound.Furthermore, a one-pot three steps synthesis of 2-methylquinoxaline starting from 1,2-dinitrobenzene and 1,2-propanediol has been successfully carried out with 98% conversion and 83% global yield to the final product.

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“…Various studies have been conducted in connection with the transformation of glycerol, such as steam reforming [2,3], hydrothermal [4,5], catalytic hydrogenation [6], the catalytic dehydration [7], pyrolysis [4,8], hydrogenolysis [9,10]. Those previous investigations produced both liquid compounds (methanol, formaldehyde, acetaldehyde and others) and gas compounds (CO2, butane, hydrogen and others).…”

Section: Introductionmentioning

confidence: 99%

Non-Catalytic and γ-Al2O3 Catalyst-based Degradation of Glycerol by Sonication Method

Kalla

Sumarno

Mahfud

2015

Bull. Chem. React. Eng. Catal.

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This research aims to study the effect of the addition of the catalyst γ-Al2O3 on the degradation of glycerol with using sonication method. This degradation reaction performed with the aid of a catalyst γ-Al2O3 or without a catalyst. Reactants were prepared from glycerol-water mixture with a mass ratio of 1:8. Experiment was carried out in a batch reactor at atmospheric pressure, temperature range between 30-70 °C for 10-90 min. The products, which were degraded from glycerol, were analyzed by gas chromatography (GC). The results showed that the ultrasonic wave radiation could degrade glycerol. The glycerol conversion was 2.92%-59.95% without employing catalyst, while the conversion of glycerol increased with adding γ-Al2O3.catalyst. It was found that methanol, allyl alcohol and acrolein were degradation products.

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Catalytic dehydration of biomass-derived polyols in sub- and supercritical water

Cited by 99 publications

References 7 publications

Continuous flow transformations of glycerol to valuable products: an overview

Continuous flow transformations of glycerol to valuable products: an overview

Biomass into chemicals: One-pot two- and three-step synthesis of quinoxalines from biomass-derived glycols and 1,2-dinitrobenzene derivatives using supported gold nanoparticles as catalysts

Non-Catalytic and γ-Al2O3 Catalyst-based Degradation of Glycerol by Sonication Method

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