Influence of inherent hierarchical porous char with alkali and alkaline earth metallic species on lignin pyrolysis

Wang, Shaoqing; Li, Zhihe; Bai, Xueyuan; Yi, Weiming; Fu, Peng

doi:10.1016/j.biortech.2018.07.117

Cited by 76 publications

(24 citation statements)

References 48 publications

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“…The down tube reactor was designed and home-installed following the aforementioned literatures (Wang et al, 2018), and on this basis getting improved. The pyrolysis device was mainly used to accomplish research objectives that exploring the correlation between fast pyrolysis reaction conditions of biomass and target product yields.…”

Section: The Design Of Down Tube Reactormentioning

confidence: 99%

“…The two parts of biochars were combined and weighed. The biochars were fixed to an adhesive carbon stub and covered with gold using a sputter coater at 30 mA for 5 min (Wang et al, 2018). SEM images were obtained at different magnifications (HITACHI S-4800 Scanning Electron Microscopy, Tokyo, Japan).…”

Section: Products Characterization and Analysismentioning

confidence: 99%

“…From Table 1 (a), we can found that the Re has a higher AAEMs (mainly K + , Na + , Ca 2+ and Mg 2+ ) content than JAs. Wang et al (2018) found that these inorganic elements can be present in biomass in numerous forms, such as a free ion and salts. Furthermore, covalent bonds between inorganic elements and the organic biomass structure are seen as well (e.g.…”

Section: Sample Characteristicsmentioning

confidence: 99%

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Fast pyrolysis characteristics of two typical coastal zone biomass fuels by thermal gravimetric analyzer and down tube reactor

Qiao

Zong

et al. 2019

Bioresource Technology

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This study aimed at investigating fast pyrolysis behavior and products distribution of two typical coastal zone biomass fuels (Jerusalem artichoke stalk (JAS) and reeds (Re) by TGA and a homemade down tube reactor. The kinetic analysis with different ramping rates was conducted by FWO and DAEM models. The liquid, gaseous and solid products are characterized to study the influence of temperature. Results indicate that high heating rates may be overcome some resistances to mass or heat transfer inside the particles of biomass, and lead to a higher conversion rates and Re species is preferable to JAs in terms of thermochemical conversion because of the lower apparent activation energy for total conversion. Moreover, the pyrolysis conditions-temperature under fast pyrolysis in a down tube pyrolysis unit will make the covalent bonds in the biomass degradation more rapidly, gave significant influence on the yields and properties of liquid, gaseous and solid products.

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Section: The Design Of Down Tube Reactormentioning

confidence: 99%

Section: Products Characterization and Analysismentioning

confidence: 99%

Section: Sample Characteristicsmentioning

confidence: 99%

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Fast pyrolysis characteristics of two typical coastal zone biomass fuels by thermal gravimetric analyzer and down tube reactor

Qiao

Zong

et al. 2019

Bioresource Technology

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“…The direct pyrolysis of lignin yielded less bio-oil and the liquid products contained less valuable phenolic monomers, but more undesirable oligomers and water. Wang et al [11] obtained 25% of liquid using lignin derived from agricultural crop residues via direct pyrolysis. To improve the quality and yield of bio-oil, pretreatment of lignin and catalytic pyrolysis could be promising methods [5,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni(NO3)2 Pretreatment on the Pyrolysis of Organsolv Lignin Derived from Corncob Residue

et al. 2020

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The thermal degradation of lignin for value-added fuels and chemicals is important for environment improvement and sustainable development. The impact of pretreatment and catalysis of Ni(NO3)2 on the pyrolysis behavior of organsolv lignin were studied in the present work. Samples were pyrolyzed at 500 ∘C with an upward fixed bed, and the characteristics of bio-oil were determined. After pretreatment by Ni(NO3)2, the yield of monophenols increased from 23.3 wt.% to 30.2 wt.% in “Ni-washed” and decreased slightly from 23.3 wt.% to 20.3 wt.% in “Ni-unwashed”. Meanwhile, the selective formation of vinyl-monophenols was promoted in “Ni-unwashed”, which indicated that the existence of nickel species promoted the dehydration of C-OH and breakage of C-C in pyrolysis. In comparison with “Water”, HHV of bio-oil derived from “Ni-unwashed” slightly increased from 27.94 mJ/kg to 28.46 mJ/kg, suggesting that the lowering of oxygen content in bio-oil is associated with improved quality. Furthermore, the content of H2 in gas products dramatically increased from 2.0% to 7.6% and 17.1%, respectively.

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“…In China, for example, the lack of proper handling methods of the abundant agricultural crop residues causes many problems; therefore, nding efficient handling methods has drawn much attention. 2,3 Lignocellulosic biomass contains cellulose, hemicellulose and lignin. 4 Cellulose and hemicelluloses can be easily converted into fuels or other useful products.…”

Section: Introductionmentioning

confidence: 99%

Effects of the novel catalyst Ni–S₂O₈²⁻–K₂O/TiO₂on efficient lignin depolymerization

Wang

et al. 2020

RSC Adv.

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Influence of inherent hierarchical porous char with alkali and alkaline earth metallic species on lignin pyrolysis

Cited by 76 publications

References 48 publications

Fast pyrolysis characteristics of two typical coastal zone biomass fuels by thermal gravimetric analyzer and down tube reactor

Fast pyrolysis characteristics of two typical coastal zone biomass fuels by thermal gravimetric analyzer and down tube reactor

Effect of Ni(NO3)2 Pretreatment on the Pyrolysis of Organsolv Lignin Derived from Corncob Residue

Effects of the novel catalyst Ni–S₂O₈²⁻–K₂O/TiO₂on efficient lignin depolymerization

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Influence of inherent hierarchical porous char with alkali and alkaline earth metallic species on lignin pyrolysis

Cited by 76 publications

References 48 publications

Fast pyrolysis characteristics of two typical coastal zone biomass fuels by thermal gravimetric analyzer and down tube reactor

Fast pyrolysis characteristics of two typical coastal zone biomass fuels by thermal gravimetric analyzer and down tube reactor

Effect of Ni(NO3)2 Pretreatment on the Pyrolysis of Organsolv Lignin Derived from Corncob Residue

Effects of the novel catalyst Ni–S2O82−–K2O/TiO2on efficient lignin depolymerization

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Effects of the novel catalyst Ni–S₂O₈²⁻–K₂O/TiO₂on efficient lignin depolymerization