Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(17), P. 6279 - 6290
Published: Jan. 1, 2024
A new family of Isothermal, redox-activated CO 2 sorbents were successfully developed using a high-throughput combinatorial approach to facilitate the generation green hydrogen from biogenic carbonaceous feedstocks.
Language: Английский
Fuel, Journal Year: 2024, Volume and Issue: 374, P. 132434 - 132434
Published: July 8, 2024
Language: Английский
Citations
7
Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(13), P. 11541 - 11561
Published: June 20, 2024
Chemical looping is a revolutionary energy conversion method aimed at the low-carbon transformation of fossil fuels. The development this technology primarily involves screening oxygen carriers, design reactors, and optimization process flows, typically requiring extensive experimental trials time consumption. Machine learning, with its high-precision predictive capabilities, can optimize chemical technology. This review comprehensively summarizes methods recent advances in application machine learning outlined typical involving database construction, model analysis, interpretable algorithms. Then, carrier screening, reactor design, flow through are explored. To address challenges found these research developments, potential solutions future perspectives proposed. We hope that offer inspiration for researchers field promote advancement
Language: Английский
Citations
6
Energy & Fuels, Journal Year: 2022, Volume and Issue: 36(17), P. 9648 - 9659
Published: July 24, 2022
Chemical looping combustion (CLC) enables efficient of hydrocarbon fuels while also producing a gas stream with high CO2 concentrations, suitable for carbon capture and storage (CCS). CLC biomass in combination CCS results removal dioxide from the atmosphere, i.e., negative emissions. However, waste-derived can contain significant fractions aggressive ash precursors, which affect operability functionality oxygen carriers. In this paper, fate common elements will be investigated thermodynamically system utilizing iron-based carriers: ilmenite iron oxide. Multiphase, multicomponent equilibrium calculations were performed using databases FACT user-defined database, specific focus on alkali (K Na) heavy metals (Cu, Zn, Pb). A detailed comprehensive comparison available literature data experimental investigations was performed, compounds not identified. Due to lack thermodynamic literature, properties four compounds, K0.85Fe0.85Ti0.15O2, K0.4Fe0.4Ti0.6O2, KTi8O16, KTi8O16.5, obtained first-principles calculations. The is studied three solid under relevant conditions: 950 °C fuel reactor 1050 air reactor. Results show that choice carriers largely influences behavior elements. Compared oxide, more beneficial respect high-temperature corrosion since less potassium released into phase titanium content immobilizes both calcium. For carriers, most corrosive are expected leave reactor, keeping free chlorides. It found compound KTi8O16 stable reducing conditions low concentrations. This conformity previous data, where has been identified interior particles used carrier aided wood chips.
Language: Английский
Citations
28
Discover Chemical Engineering, Journal Year: 2022, Volume and Issue: 2(1)
Published: July 25, 2022
Abstract Chemical looping reforming (CLR) provides a viable process intensification approach for clean and efficient syngas production from carbonaceous fuel with inherent gas–gas separation. The rational design of metal oxide-based oxygen carriers the scale-up associated CLR reactor systems play important roles in development. This review first introduces concept advantages as well its historical fundamentals, including basic schemes, reaction stoichiometry, thermodynamics, kinetics system design, are reviewed. integral development is illustrated, showing that compatibility critical performance. principle during reduction discussed, followed by strategies improving redox reactivity stability. We further discuss latest exciting advances on this subject purpose illustrating factors govern fundamental mechanisms chemistry their principles sustained chemical applications. It expected these new will inspire more effective deployment various processes.
Language: Английский
Citations
28
Fuel, Journal Year: 2024, Volume and Issue: 369, P. 131676 - 131676
Published: April 15, 2024
Chemical looping combustion (CLC) is an innovative technology suitable for converting waste-derived fuels into heat and power. The process inherently produces pure CO2, which highly favorable carbon capture storage could be instrumental achieving negative emissions. CLC operates by utilizing solid oxygen carriers (OCs) to transfer between two reactors. OC play a crucial role in efficient combustion. Manganese-based OCs are particularly interesting, due their ability release gaseous oxygen. However, ash components from alter capacity, cause problems related corrosion agglomeration. objective of this work obtain in-depth insights about Mn-based fuels. This achieved investigating phase transitions during when manganese-based OCs: manganese oxide representative ore. For purpose, thermodynamic modeling employed, specific focus given K, Na, Cu, Zn, Pb, important and/or Thermodynamic databases expanded calculating properties first-principles. It shown that effectively while limiting corrosion. Furthermore, the iron ores found have positive implications oxygen-transfer reactions. In terms alkali gas phase, ore seems more promising material compared oxide. pathways heavy metals Pb were, meanwhile, independent type.
Language: Английский
Citations
5
Biomass and Bioenergy, Journal Year: 2024, Volume and Issue: 190, P. 107393 - 107393
Published: Sept. 23, 2024
Language: Английский
Citations
5
Fuel, Journal Year: 2022, Volume and Issue: 326, P. 125024 - 125024
Published: June 28, 2022
Language: Английский
Citations
20
Current Opinion in Green and Sustainable Chemistry, Journal Year: 2022, Volume and Issue: 39, P. 100721 - 100721
Published: Nov. 5, 2022
Language: Английский
Citations
19
Chemical Communications, Journal Year: 2022, Volume and Issue: 59(1), P. 10 - 28
Published: Dec. 1, 2022
Over the past two decades, chemical looping combustion (CLC) has been extensively investigated as a promising means to produce electric power while generating concentrated carbon dioxide stream for sequestration. We note that strategy can be extended well outside of combustion-based capture. In fact, application in areas beyond result somewhat unexpected energy and savings without producing CO2 at all. Furthermore, it allows looping-based technologies tap into applications such production - $4 trillion per year industrial sector with high intensities. The key resides design effective oxygen carriers, also known redox catalysts context selective conversion through catalysis (CLCa). This contribution focuses on mixed oxides multi-function reaction media CLCa. Since typical oxide carriers tend nonselective hydrocarbon conversion, first part this article presents generalized principles surface modification improve their selectivity catalytic activity. Applications these oxidative dehydrogenation (CL-ODH) variety light alkanes alkyl-benzenes are presented. is followed discussion computation assisted based upon thermodynamic criteria. Finally, few new directions introduced.
Language: Английский
Citations
19
Fuel, Journal Year: 2023, Volume and Issue: 339, P. 127310 - 127310
Published: Jan. 5, 2023
Iron sand as an industrial by-product has a reasonable iron content (35 wt% Fe) and low economical cost. The reactivity of oxygen carrier was examined in bubbling fluidized bed reactor using both gaseous solid fuels at 850–975 °C. Pre-reductions were performed prior to fuel conversion adapt the less-oxygen-requiring environment chemical looping gasification (CLG). Based on investigations CO CH4, transfer capacity around 1 wt%, which is lower than that ilmenite. pine forest residue char H2 higher when compared Depending mass degree sand, activation energy between 187 234 kJ/mol, slightly Neither agglomeration nor defluidization occurred even high reduction degrees. These suggests can be utilized CLG. Furthermore, this study presents novel findings crystalline phase transformation various degrees oxidation, altogether with relevant thermodynamic stable phases.
Language: Английский
Citations
11