Results 31 to 40 of about 36,068 (295)

Experimental demonstration of vanadium-doped nanostructured ceria for enhanced solar thermochemical syngas production [PDF]

open access: yes, 2021
Solar-driven thermochemical routes enable storage of solar energy in chemical form for off-sun use by means of synthetic fuel production. Here, we explore vanadium-doped ceria materials for partial oxidation of methane, followed by an efficient splitting
Tsuzuki, Takuya   +13 more
core   +1 more source

Beyond Formate Trapping: A Mechanistic Framework for Homogeneous CO2‐to‐Methanol Conversion With First‐Row Transition Metals

open access: yesAngewandte Chemie, EarlyView.
This review shows that converting CO2 into methanol with catalysts based on abundant first‐row metals requires more than overcoming formate formation. Success depends on balancing hydrogen activation, intermediate reactivity, product release, and catalyst stability.
Elise Boudry, Christophe M. Thomas
wiley   +2 more sources

Performance Analysis of a Proton Exchange Membrane Fuel Cell Based Syngas

open access: yesEntropy, 2019
External chemical reactors for steam reforming and water gas shift reactions are needed for a proton exchange membrane (PEM) fuel cell system using syngas fuel.
Xiuqin Zhang   +5 more
doaj   +1 more source

Active‐Site Photothermal Energy Utilization in PET Depolymerization

open access: yesAngewandte Chemie, EarlyView.
Photothermal catalysis enables efficient PET depolymerization, yet the role of active‐site temperature remains unclear. A catalytic activity reversal between Pd–CNG and PdPOM–CNG is observed under thermal and photothermal conditions. Efficient nanoscale photothermal energy delivery raises active‐site temperature, compensates for lower intrinsic ...
Xin Li   +7 more
wiley   +2 more sources

Syngas Upgrading to Hydrocarbon Fuels Technology Pathway [PDF]

open access: yes, 2013
This technology pathway case investigates the upgrading of woody biomass derived synthesis gas (syngas) to hydrocarbon biofuels. While this specific discussion focuses on the conversion of syngas via a methanol intermediate to hydrocarbon blendstocks ...
Biddy, M.   +4 more
core   +1 more source

From Atoms to Reactors: A Critical Review of a Decade of Machine Learning in Heterogeneous Catalysis (2017–2026)

open access: yesAngewandte Chemie, EarlyView.
Machine learning has digitalized heterogeneous catalysis from the top of the length scale downward: prediction at the atom and the material is now mature, yet the reactor and the process remain the open frontier. This critical review traces a decade of progress across the full catalytic value chain and asks where the next decade of impact must be won ...
Rafael Larraz, Avelino Corma
wiley   +2 more sources

Model-Free Control of UCG Based on Continual Optimization of Operating Variables: An Experimental Study

open access: yesEnergies, 2021
The underground coal gasification (UCG) represents an effective coal mining technology, where coal is transformed into syngas underground. Extracted syngas is cleaned and processed for energy production.
Ján Kačur   +3 more
doaj   +1 more source

Insights Into CO2 Loss, pH Effects, and Tafel Kinetics in Ni Single Atom‐Driven Bicarbonate Electroreduction

open access: yesAdvanced Science, EarlyView.
Selective CO formation in bicarbonate electrolysis is achieved by retaining reactive CO2 and tuning pH, while the competing hydrogen evolution reaction occurs at the interface. The rate‐determining step couples the chemical equilibrium of bicarbonate/CO2 with electrochemical charge transfer, offering insight into optimizing reaction conditions for ...
Lin Li   +7 more
wiley   +1 more source

Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide

open access: yesJournal of CO2 Utilization
Transition metal is quantitatively investigated as a promoter of Pt-supported catalysts for the oxidative dehydrogenation of propane with CO2 (CO2-ODP). However, the criteria for selecting the transition metal are largely from trial and error.
Heng-Bo Zhang   +3 more
doaj   +1 more source

Acetate Production from Syngas Produced from Lignocellulosic Biomass Materials along with Gaseous Fermentation of the Syngas: A Review

open access: yesMicroorganisms, 2023
Biotransformation of lignocellulose-derived synthetic gas (syngas) into acetic acid is a promising way of creating biochemicals from lignocellulosic waste materials.
Budi Mandra Harahap, Birgitte K. Ahring
doaj   +1 more source

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