Removal of biomass tar by steam reforming over calcined scallop shell supported Cu catalysts

Kaewpanha, Malinee; Karnjanakom, Surachai; Guan, Guoqing; Hao, Xiaogang; Yang, Jingxuan; Abudula, Abuliti

doi:10.1016/j.jechem.2017.03.012

Cited by 35 publications

(5 citation statements)

References 46 publications

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“…From the composition of this catalyst and the conditions used in calcination, the formation of this two phases (CaO and CaCuO 2 ) is in accordance with the results predicted by Roth et al, 38 which studied the phase equilibrium diagram for the binary system CaO-CuO. Kaewpanha et al 39 prepared catalysts with different CuO loading supported in scallop shells (>99% CaO) by the wet impregnation method. Aer the calcination of the catalysts at 650 C/3 h, it was obtained a mixture of phases, including CaO, CuO and CaCuO 2 .…”

Section: Catalystsupporting

confidence: 83%

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

et al. 2020

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Section: Catalystsupporting

confidence: 83%

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

et al. 2020

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“…Using waste shells would avoid the mining activity usually linked to the use of dolomite, olivine and other metal-based catalysts, reducing also the environmental impacts associated with it. So far, among the different seafood shells available, only scallop and egg waste shells have been investigated for in-situ tar reduction in biomass steam gasification as active phase and as catalyst supports [51,52,53,54].…”

Section: Wte and Wtm Valorization Routes [3]mentioning

confidence: 99%

Seashell waste-derived materials for secondary catalytic tar reduction in municipal solid waste gasification

Gomez-Rueda

Zaini

Yang

et al. 2020

Biomass and Bioenergy

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Catalytic tar removal from producer gas is critical for the economic feasibility of Municipal Solid Waste (MSW) gasification in the waste-to-energy(WtE) approach. Nickel-and noble-metal catalysts have the highest tar cracking activities, but they increase costs, use scarce materials, and generate dangerous byproducts. To overcome these drawbacks, naturally occurring materials should be used for tar cracking. In this paper, two nanomaterials, synthesized from oyster and mussel waste shells respectively, are used to clean syngas from MSW in a secondary tar cracking unit. We observed that they reform class 1 tar (heavy tars that condense at high temperatures at very low concentrations) into class 3 tar (light hydrocarbons that are not important in condensation) and benzene. Although both catalysts' composition and textural properties were identical, crystallite size and especially specific surface area variation was enough to generate a change in product selectivity.A larger crystallite size and SSA shows a soot yield reduction of 95% with respect to the non-catalytic case, simultaneously increasing the H 2 /CO at 1000 • C.

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“…Many studies have been performed on heterogeneous transformations of tar, but there has been limited exploration of homogeneous processes. There is still a lack of insight into the intrinsic mechanisms underlying tar transformations. − …”

Section: Introductionmentioning

confidence: 99%

Influence of H₂O and O₂ on the Homogeneous Conversion of Toluene and the Underlying Reaction Mechanisms

Cui,

Liu,

et al. 2024

Ind. Eng. Chem. Res.

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In this study, the impact of H2O and O2 on the homogeneous conversion of toluene at various temperatures and concentrations was investigated. Molecular dynamics simulations were performed using the ReaxFF force field to decipher the underlying high-temperature reaction dynamics among toluene, H2O, and O2. In the presence of both H2O and O2, the toluene conversion efficiency reached 98%, primarily producing H2 and CO. Toluene conversion and H2 and CO generation were strengthened under 1–2% O2 with 5–15% H2O. Conversely, elevated O2 (3%) and H2O (25–35%) hindered the combustible gas yield. Two principal H2 and CO formation pathways were identified: (1) Under high temperatures, H2O and O2 generate OH radicals, promoting toluene side chain conversion into (CHO) entities, which subsequently break down into H2 and CO. (2) The toluene-benzene ring disintegrates under OH radical activity. The resulting fragments, in the presence of H2O, produce H2 and CO. The simulation insights were validated by D2O and 18O2 isotope labeling experiments.

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Removal of biomass tar by steam reforming over calcined scallop shell supported Cu catalysts

Cited by 35 publications

References 46 publications

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

Seashell waste-derived materials for secondary catalytic tar reduction in municipal solid waste gasification

Influence of H₂O and O₂ on the Homogeneous Conversion of Toluene and the Underlying Reaction Mechanisms

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Removal of biomass tar by steam reforming over calcined scallop shell supported Cu catalysts

Cited by 35 publications

References 46 publications

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

Seashell waste-derived materials for secondary catalytic tar reduction in municipal solid waste gasification

Influence of H2O and O2 on the Homogeneous Conversion of Toluene and the Underlying Reaction Mechanisms

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Influence of H₂O and O₂ on the Homogeneous Conversion of Toluene and the Underlying Reaction Mechanisms