Results 111 to 120 of about 40,745 (328)

Design of a Gas Rapid Injection Nuclear Magnetic Resonance System for Structure Elucidations and Kinetic Analyses

open access: yesChemistry–Methods, EarlyView.
A gas rapid injection nuclear magnetic resonance (GRI‐NMR) device was designed and constructed for the precise delivery of gases at atmospheric pressures for real‐time data acquisition. The GRI‐NMR system precluded any modifications to the NMR instrument itself and was implemented for the kinetic analysis of ligand displacement using a highly sensitive
Lupita S. Aguirre   +3 more
wiley   +1 more source

Biological fermentation of syngas

open access: yes, 2010
Synthesis gas (or syngas) can be produced from a variety of materials including commonly-used fossil fuels, but also renewable organic compounds such as poorly degradable biomass sources and wastes, through gasification. Syngas is a mixture composed of mainly H2, CO and CO2 that can be used in a biological process for the production of fuels or usable ...
Alves, J. I., Sousa, D. Z., Alves, M. M.
openaire   +2 more sources

Tri‐Reforming of Methane over a Hydroxyapatite‐Supported Nickel Catalyst Prepared by Cation Exchange

open access: yesChemPlusChem, Accepted Article.
Catalytic steam reforming of methane is a major process to produce synthetic gas (syngas), deployed at large industrial scale. However, this is an energy‐intensive process since it is carried out at high temperature above 900 °C with large excess of water to preserve catalyst stability.
Xuan-Huynh Pham   +2 more
wiley   +1 more source

Rhamnolipid Self‐Aggregation in Water–Bioglycerol Mixtures: Byproduct Valorization for Sustainable Formulation Design

open access: yesChemPlusChem, EarlyView.
Bioglycerol, the primary byproduct of biodiesel production, has the potential to be valorized as a cosolvent in industrial formulations. Surface tension and self‐diffusion data reveal that rhamnolipid self‐aggregation in water is poorly affected by the addition of bioglycerol up to very high concentrations. These results demonstrate that biosurfactants
Rodolfo Esposito   +8 more
wiley   +1 more source

Temperature‐Dependent Kinetics of Plasma‐Based CO2 Conversion: Interplay of Electron‐Driven and Thermal‐Driven Chemistry

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The transformation of CO2 into chemical building blocks is essential for a net‐zero energy future. Plasma‐chemical processing offers promising potential to achieve this. Here, we explore a temperature‐dependent plasma‐chemical reaction mechanism, revealing a shift from electron‐driven to thermal‐driven CO2 conversion regimes.
Aswath Mohanan   +2 more
wiley   +1 more source

CO2 Electroreduction Coupled with the Electrooxidation of Alcohols and Sugars to Formate: Review and Evaluation

open access: yesChemSusChem, EarlyView.
This review summarizes the latest literature on the production of formate by coupling the CO2 electroreduction with the electrooxidation of alcohols or sugars, covering the selection of catalysts, optimization of electrolytes, electrolyzer design and product separation. The economic and environmental impact of electroproduction of formate are analyzed,
Chongyang Jiang   +6 more
wiley   +1 more source

Elemental Trade‐Off in the Selective Electro‐Oxidation of Ethylene Glycol on Palladium‐Silver/Nickel Electrodes

open access: yesChemSusChem, EarlyView.
Connect 4: Tuning the surface composition of Pd‐Ag electrodes on nickel foam enables the four‐electron oxidation of ethylene glycol to glycolic acid in high yields. The electrochemical reaction is tested under batch and industrially realistic flow conditions. For the latter, the Pd–Ni electrode yields >80% selectivity to glycolate for over 140 h.
Noë I. Watson   +4 more
wiley   +1 more source

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang   +3 more
wiley   +1 more source

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