Systematic screening and modification of Ni based catalysts for hydrogen generation from supercritical water gasification of lignin

Kang, Kang; Azargohar, Ramin; Dalai, Ajay K.; Wang, Hui

doi:10.1016/j.cej.2015.08.032

Cited by 70 publications

(51 citation statements)

References 54 publications

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“…Kang et al (2016b) screened of 29 catalysts generated using 5 supports for the production of hydrogen by the water gasification of lignin under supercritical conditions, and finally ranked Ni-based catalysts in order of reactivity as follows: Al2O3 > TiO2 > AC > ZrO2 > MgO. Kang et al (2016b) also showed that Ce improved H2 selectivity by favoring dispersion of Ni and inhibiting Ni-Al2O3 interactions. In their study, the 20Ni-0.36Ce/Al2O3 catalyst exhibited a peak H2 yield of 2.15 mmol g -1 .…”

Section: Tablementioning

confidence: 99%

Applications of subcritical and supercritical water conditions for extraction, hydrolysis, gasification, and carbonization of biomass: a critical review

et al. 2017

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Please cite this article as: Lachos-Perez D., Brown A.B., Mudhoo A., Martinez J., Timko M.T., Rostagno M.A., Forster-Carneiro T. Subcritical and supercritical water extraction, hydrolysis, gasification and carbonization of biomass: a critical review. Biofuel Research Journal 14 (2017) HIGHLIGHTSØAdvances of research trends in development of subcritical and supercritical water processes technologies are reviewed.Essential aspects of sub-and supercritical water applied to extraction, hydrolysis, carbonization and gasification processes are discussed. ØEquipment design, process parameters, and types of biomass used for sub-and supercritical water process are presented. ØBioactive compounds, reducing sugars, hydrogen, biodiesel, and hydrothermal char are the final products of sub-and supercritical water processes. This review summarizes the recent essential aspects of subcritical and supercritical water technology applied to the extraction, hydrolysis, carbonization, and gasification processes. These are clean and fast technologies which do not need pretreatment, require less reaction time, generate less corrosion and residues, do not use toxic solvents, and reduce the synthesis of degradation byproducts. The equipment design, process parameters, and types of biomass used for subcritical and supercritical water process are presented. The benefits of catalysis to improve process efficiency are addressed. Bioactive compounds, reducing sugars, hydrogen, biodiesel, and hydrothermal char are the final products of subcritical and supercritical water processes. The present review also revisits advances of the research trends in the development of subcritical and supercritical water process technologies. GRAPHICAL ABSTRACT ARTICLE INFO ABSTRACT

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Section: Tablementioning

confidence: 99%

Applications of subcritical and supercritical water conditions for extraction, hydrolysis, gasification, and carbonization of biomass: a critical review

et al. 2017

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“…The literature data demonstrate that Ni-based systems are also most popular in this case [84][85][86][87]. In fact, promising results were obtained for catalysts containing noble metals as well [88].…”

Section: Catalysts For the Production Of A Hydrogen-rich Gas From Ligmentioning

confidence: 80%

Development of Heterogeneous Catalysts for Thermo-Chemical Conversion of Lignocellulosic Biomass

Grams

Ruppert

2017

Energies

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Lignocellulosic biomass is one of the most attractive renewable resources that can be used for the production of biofuels and valuable chemicals. However, problems associated with the low efficiency of its conversion and poor selectivity to desired products remain. Therefore, in recent years researchers have focused on the design of highly active and stable catalysts, enabling an increase in the effectiveness of lignocellulosic biomass processing. This work is devoted to the presentation of the latest trends in the studies of the heterogeneous catalysts used in thermo-chemical conversion of such feedstock. The systems applied for the production of both bio-oil and hydrogen-rich gas are discussed. Zeolites, mesoporous materials, metal oxides, supported metal catalysts, and modifications of their structure are described. Moreover, the impact of the physicochemical properties of the presented catalyst on their catalytic performance in the mentioned processes is demonstrated.

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“…The definitions of hydrogen and gas yield reported in this paper can be found in our previous work [11]. For the composition of catalysts, the numbers (e.g., 5,20) before active metal such as Ni/Ru indicates the weight percentage of Ni/Ru with respect to the weight of the catalyst.…”

Section: Data Interpretationmentioning

confidence: 99%

“…For product separation and collection, detailed descriptions are given in our previous work [11]. Briefly, the gas phase products were released to the condenser and collected using a Tedlar bag.…”

Section: Material Scw Reactor and Procedures For Scwg Testsmentioning

confidence: 99%

“…Then, for catalytic SCWG of lignin, under the operation conditions of 650°C, 26 MPa and water to biomass mass ratio of five, it was observed that: using different supports, the activity of Ni-based catalysts were in the order of Al 2 O 3 > TiO 2 > AC > ZrO 2 > MgO. Regarding promoters, the activity of the catalysts were in the order of Ce > Co > Cu [11].…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Hydrogen production from lignin, cellulose and waste biomass via supercritical water gasification: Catalyst activity and process optimization study

Kang

Azargohar

Dalai

et al. 2016

Energy Conversion and Management

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128

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Systematic screening and modification of Ni based catalysts for hydrogen generation from supercritical water gasification of lignin

Cited by 70 publications

References 54 publications

Applications of subcritical and supercritical water conditions for extraction, hydrolysis, gasification, and carbonization of biomass: a critical review

Applications of subcritical and supercritical water conditions for extraction, hydrolysis, gasification, and carbonization of biomass: a critical review

Development of Heterogeneous Catalysts for Thermo-Chemical Conversion of Lignocellulosic Biomass

Hydrogen production from lignin, cellulose and waste biomass via supercritical water gasification: Catalyst activity and process optimization study

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