Alkali-thermal gasification and hydrogen generation potential of biomass

Koven, Alexander; Tong, Shitang; Jia, Charles Q.

doi:10.1007/s11705-017-1662-y

Cited by 18 publications

(3 citation statements)

References 25 publications

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“…The catalysts implemented should have the potential to catalyze the breakage of C–C, C–O, C–H, and O–H bonds to yield H 2 rich gas mixture. , Researchers have tested a variety of both homogeneous and heterogeneous catalysts to selectively enhance H 2 gas yields. − Alkali and alkaline earth metals have been found to be active and selective for H 2 by catalyzing the water gas shift (WGS) reaction. However, at high concentrations, hydroxides and carbonates of these alkali and alkaline earth metals precipitate out in supercritical water, limiting their industrial application .…”

Section: Introductionmentioning

confidence: 99%

In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni²⁺) Impregnated Biomass for H₂ Production

Kumar

Reddy

2019

Ind. Eng. Chem. Res.

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Nanocatalysts and their integration into biomass have gained importance over the past few years. This research gave insights on impregnation of Ni salts in bagasse and mosambi peels with the variation of pH at 30 °C for 48 h. The highest loading was attained at pH 6.5 for bagasse and 5.2 for mosambi peels. The impregnated metal biomass samples were subjected to in situ hydrothermal gasification over the temperature range 300−500 °C. The transition of Ni 2+ to metal nickel nanoparticles during in situ hydrothermal treatment was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. Maximum yields of H 2 , 13.82 mmol/g of bagasse and 9.52 mmol/g of mosambi peel, were attained at the operated temperature of 500 °C and 1:8 biomass to water ratio with carbon gasification efficiency approaching 73.7 and 60.6% for bagasse and mosambi peels, respectively. The performance of hydrothermal gasification of impregnated biomass was compared with Raney Ni and washed samples at the above operated supercritical temperature and biomass to water ratio. The results conveyed that in situ gasification of Ni 2+ impregnated biomass enhanced not only H 2 yields but also improved overall gas yields contributing to the carbon gasification efficiency of both feedstocks.

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Section: Introductionmentioning

confidence: 99%

In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni²⁺) Impregnated Biomass for H₂ Production

Kumar

Reddy

2019

Ind. Eng. Chem. Res.

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“…Taking biomass, even sewage sludge as feedstock, multiple chemicals, biogas, and bio-fuel could be produced by resorting to thermal processes. For instance, glucose, cellulose, xylan, and lignin can be converted into hydrogen-rich gas by using alkali-thermal gasification at moderate temperatures without catalyst, which offers a promising way for producing the biomassbased hydrogen [13]. An effort has been made by Mao et al [14] that upgrades the pyrolysis of bio-fuel from corncobs via integrating a zeolite-coated cordierite honeycomb into a bubbling fluidized bed pyrolyzer.…”

Section: Contributions Of Chemical Science and Engineering In The Bio-ementioning

confidence: 99%

Contributions in renewable energy systems: A perspective from the latest publications of FCSE

Zhu

Wang

2019

Front. Chem. Sci. Eng.

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“…The alkaline and alkaline-earth metals present in mineral species existing in biomass have catalytic effects during biomass gasification [229,230,237,241]. Nevertheless, compared with homogeneous alkali catalysis [242], heterogeneous catalysts based on transition and noble metals have advantages. Ni-Co/Mg-Al catalysts have been evaluated and have demonstrated high flexibility and potential for gasification [243], while noble metals showed higher activity for the gasification, following this order: Ru > Rh > Pt > Pd > Ni [244][245][246][247].…”

Section: Gasificationmentioning

confidence: 99%

Alternatives for Chemical and Biochemical Lignin Valorization: Hot Topics from a Bibliometric Analysis of the Research Published During the 2000–2016 Period

2018

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A complete bibliometric analysis of the Scopus database was performed to identify the research trends related to lignin valorization from 2000 to 2016. The results from this analysis revealed an exponentially increasing number of publications and a high relevance of interdisciplinary collaboration. The simultaneous valorization of the three main components of lignocellulosic biomass (cellulose, hemicellulose, and lignin) has been revealed as a key aspect and optimal pretreatment is required for the subsequent lignin valorization. Research covers the determination of the lignin structure, isolation, and characterization; depolymerization by thermal and thermochemical methods; chemical, biochemical and biological conversion of depolymerized lignin; and lignin applications. Most methods for lignin depolymerization are focused on the selective cleavage of the β-O-4 linkage. Although many depolymerization methods have been developed, depolymerization with sodium hydroxide is the dominant process at industrial scale. Oxidative conversion of lignin is the most used method for the chemical lignin upgrading. Lignin uses can be classified according to its structure into lignin-derived aromatic compounds, lignin-derived carbon materials and lignin-derived polymeric materials. There are many advances in all approaches, but lignin-derived polymeric materials appear as a promising option.

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Alkali-thermal gasification and hydrogen generation potential of biomass

Cited by 18 publications

References 25 publications

In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni²⁺) Impregnated Biomass for H₂ Production

In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni²⁺) Impregnated Biomass for H₂ Production

Contributions in renewable energy systems: A perspective from the latest publications of FCSE

Alternatives for Chemical and Biochemical Lignin Valorization: Hot Topics from a Bibliometric Analysis of the Research Published During the 2000–2016 Period

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Alkali-thermal gasification and hydrogen generation potential of biomass

Cited by 18 publications

References 25 publications

In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni2+) Impregnated Biomass for H2 Production

In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni2+) Impregnated Biomass for H2 Production

Contributions in renewable energy systems: A perspective from the latest publications of FCSE

Alternatives for Chemical and Biochemical Lignin Valorization: Hot Topics from a Bibliometric Analysis of the Research Published During the 2000–2016 Period

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In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni²⁺) Impregnated Biomass for H₂ Production

In Situ Sub- and Supercritical Water Gasification of Nano-Nickel (Ni²⁺) Impregnated Biomass for H₂ Production