Experimental study on supercritical carbon dioxide gasification of biomass

Zhou, Chenchen; Ge, Zhiwei; Wang, Yu; Shang, Fei; Guo, Liejin

doi:10.1007/s43979-022-00043-3

Cited by 11 publications

(2 citation statements)

References 45 publications

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“…Currently, there are a variety of uses for biomass in many industrial applications such as energy. 3,4…”

Section: Introductionmentioning

confidence: 99%

“…Currently, there are a variety of uses for biomass in many industrial applications such as energy. 3,4 Biomass-derived biodiesel has become increasingly popular because of the advantages it offers. Not only is biodiesel renewable, but it is also biodegradable, environmentally benign, and non-toxic; hence, it is a good substitute for diesel fuel.…”

Section: Introductionmentioning

confidence: 99%

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Determination of active sites on the synthesis of novel Lewis acidic deep eutectic solvent catalysts and kinetic studies in microalgal biodiesel production

et al. 2023

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“…Currently, there are a variety of uses for biomass in many industrial applications such as energy. 3,4…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of active sites on the synthesis of novel Lewis acidic deep eutectic solvent catalysts and kinetic studies in microalgal biodiesel production

et al. 2023

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Preparation of biochar adsorption material from walnut shell by supercritical CO2 pretreatment

Zhuang,

Liu,

Wei

et al. 2024

Biochar

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In order to treat dyes in the wastewater of the printing industry and to reutilize walnut shell (WS) waste generate economic benefits, supercritical carbon dioxide (SC-CO2) pretreatment technology was developed to prepare porous biochar as a precursor for adsorption material. Orthogonal experiments were conducted at the temperatures of 200, 300, and 400 ℃ with durations of 20, 40, and 60 min, and a control group was set up using N2 pretreatment. Then, KOH activation was employed to prepare biochar adsorption material. The biochars were analyzed and characterized using TGA, BET, SEM, FT-IR, and XRD, and the liquid and gas phase products of the pretreatment process were analyzed semi-quantitatively and quantitatively using GC–MS and gas chromatography. Methylene blue (MB) dye was selected as an indicator to measure the adsorption capacity of biochar, and adsorption kinetics were analyzed based on the data. The results indicate that pretreatment with SC-CO2 effectively enhanced the performance and yield of the activated carbon. The highest specific surface area increased by 18%, and the maximum adsorption of MB increased by 23% compared to the N2 control group. The yield increased by 8–262% and the specific surface area increased by 50–192% compared to the direct activation of walnut shell (WS). During the pretreatment processes for the preparation of biochar adsorption material with the best specific surface area, phenol-enriched bio-oil was produced as a by-product which has economic value. Graphical Abstract

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Mechanistic insight into the C1 product selectivity for the catalytic hydrogenation of CO2 over metal-doped graphene

Chen,

Liu,

et al. 2024

Carb Neutrality

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The conversion of CO2 into fuels and valuable chemicals presents a viable path toward carbon neutrality. The aim of this study is to investigate the potential of metal-doped graphene catalysts in the reduction of CO2 to C1 products. 20 typical M-graphene (M = metal) catalysts were established based on DFT calculations. Six candidate catalysts, i.e., V-, Cr-, Mn-, Ni-, Mo-, and Ta-graphene catalysts, were selected by combining the hydrogen dissociation ability and the energy band gap of the catalysts. Subsequently, the adsorption characteristics and hydrogenation reactions of CO2 over the six candidates were explored. CO2 tends to adsorb at the M site through vertical adsorption and carbon–oxygen co-adsorption. V- and Cr-graphene catalysts promote the production of intermediate COOH, whereas Mn-, Ni-, Mo-, and Ta-doped surfaces are more favorable for HCOO formation. Concerning the hydrogenation to CO and HCOOH, V-, Cr-, Ni- and Mo-graphene catalysts preferentially yield CO from COOH, whereas Ta-doped graphene favors the formation of HCOOH. In total, the competitive hydrogenation of CO2 reveals the selectivity of the C1 products. Cr- and Ni-graphene favor the production of HCOOH and CH3OH, whereas V-, Mn-, Mo-, and Ta-graphene primarily yield CH3OH. Graphical Abstract

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Experimental study on supercritical carbon dioxide gasification of biomass

Cited by 11 publications

References 45 publications

Determination of active sites on the synthesis of novel Lewis acidic deep eutectic solvent catalysts and kinetic studies in microalgal biodiesel production

Determination of active sites on the synthesis of novel Lewis acidic deep eutectic solvent catalysts and kinetic studies in microalgal biodiesel production

Preparation of biochar adsorption material from walnut shell by supercritical CO2 pretreatment

Mechanistic insight into the C1 product selectivity for the catalytic hydrogenation of CO2 over metal-doped graphene

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