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Catalytic hydrothermal gasification of biomass.

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TLDR
The use of heterogeneous catalysts in such a system allows effective operation at lower temperatures, and the issues around the use of catalysts are presented in this article, where the potential of this new processing concept by comparing the various options under development and the results of the research.
Abstract
A recent development in biomass gasification is the use of a pressurized water-processing environment to avoid drying of the biomass. This paper reviews the research undertaken developing this new option for biomass gasification. This review does not cover wet oxidation or near-atmospheric-pressure steam-gasification of biomass. Laboratory research on hydrothermal gasification of biomass focusing on the use of catalysts is reviewed here, and a companion review focuses on non-catalytic processing. Research includes liquid-phase, subcritical processing as well as supercritical water processing. The use of heterogeneous catalysts in such a system allows effective operation at lower temperatures, and the issues around the use of catalysts are presented. This review attempts to show the potential of this new processing concept by comparing the various options under development and the results of the research. © 2008 Society of Chemical Industry and John Wiley & Sons, Ltd

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Journal ArticleDOI

Thermochemical biofuel production in hydrothermal media: A review of sub- and supercritical water technologies

TL;DR: Several biomass hydrothermal conversion processes are in development or demonstration as mentioned in this paper, which are generally lower temperature (200-400 °C) reactions which produce liquid products, often called bio-oil or bio-crude.
Journal ArticleDOI

Engineering Carbon Materials from the Hydrothermal Carbonization Process of Biomass

TL;DR: It will be demonstrated that the HTC process can rationally design a rich family of carbonaceous and hybrid functional carbon materials with important applications in a sustainable fashion.
Journal ArticleDOI

An overview of advances in biomass gasification

TL;DR: In this paper, an assessment on the fundamentals such as feedstock types, the impact of different operating parameters, tar formation and cracking, and modelling approaches for biomass gasification is presented.
Journal ArticleDOI

Hydrogenolysis Goes Bio: From Carbohydrates and Sugar Alcohols to Platform Chemicals

TL;DR: Past and present developments in hydrogenolysis reactions are highlighted, with special emphasis on the direct utilization of cellulosic feedstocks, to bridge currently available technologies and future biomass-based refinery concepts.
Journal ArticleDOI

Kinetics and mechanism of cellulose pyrolysis

TL;DR: In this article, the authors report the kinetics and chemistry of cellulose pyrolysis using both a Pyroprobe reactor and a thermogravimetric analyzer mass spectrometer (TGA-MS).
References
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Journal ArticleDOI

Hydrogen from catalytic reforming of biomass-derived hydrocarbons in liquid water

TL;DR: It is demonstrated that hydrogen can be produced from sugars and alcohols at temperatures near 500 K in a single-reactor aqueous-phase reforming process using a platinum-based catalyst, and the findings suggest that catalytic aqueus phase reforming might prove useful for the generation of hydrogen-rich fuel gas from carbohydrates extracted from renewable biomass and biomass waste streams.
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Biomass gasification in near- and super-critical water: Status and prospects

TL;DR: The current status of biomass gasification in near and supercritical water (SCWG) is reviewed in this article, where two approaches for SCWG are compared: low-temperature catalytic gasification, which employs reaction temperature ranging from 350 to 600 °C, and gasifies the feedstock with the aid of metal catalysts.
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Biomass Gasification in Supercritical Water

TL;DR: In this paper, three different tubular flow reactors were used to produce high yields of gas with a high content of hydrogen (57 mol %) at the highest temperatures employed in this work, and all three reactors plugged after 1−2 h of use with feedstocks.
Journal ArticleDOI

Aqueous-phase reforming of ethylene glycol on silica-supported metal catalysts

TL;DR: In this article, reaction kinetic studies were conducted for aqueous-phase reforming of ethylene glycol over silica-supported Ni, Pd, Pt, Ru, Rh and Ir catalysts at temperatures of 483 and 498 K and at a total pressure of 22 bar.
Journal ArticleDOI

Carbon-Catalyzed Gasification of Organic Feedstocks in Supercritical Water†

TL;DR: In this paper, the effects of temperature, pressure, reactant concentration, weight hourly space velocity, and the type of catalyst on the gasification of glucose are reported, and complete conversion of glucose (22% by weight in water) to a hydrogen-rich synthesis gas was realized at a weight hourly velocity (WHSV) of 22.2 h-1 in supercritical water at 600 °C, 34.5 MPa.
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