Results 61 to 70 of about 4,417 (299)

A DFT investigation of the mechanisms of CO2 and CO methanation on Fe (111)

open access: yesMaterials for Renewable and Sustainable Energy, 2020
Insight into the detailed mechanism of the Sabatier reaction on iron is essential for the design of cheap, environmentally benign, efficient and selective catalytic surfaces for CO2 reduction. Earlier attempts to unravel the mechanism of CO2 reduction on
Caroline R. Kwawu   +3 more
doaj   +1 more source

Insights into Nickel-Based Dual Function Materials for CO2 Sorption and Methanation: Effect of Reduction Temperature

open access: yes, 2021
Ni-MgO dual function materials (DFMs) show promise for integrated CO2 sorption and methanation. To improve CO2 sorption capacity, Ni-MgO DFMs are promoted with alkali metal nitrates.
Guodong Wang   +13 more
core   +1 more source

Co1/Ru Single‐Atom Alloy Catalyst for Sustainable Polypropylene Hydrogenolysis to Long‐Chain Liquid Products

open access: yesAdvanced Materials, EarlyView.
A titania‐supported Co1/Ru single‐atom alloy catalyst enables efficient polypropylene hydrogenolysis. Ru─Co─Ru motifs maintain Ru activity while suppressing excessive chain scission to gaseous products. Both virgin and waste plastics achieve high, environmentally and economically optimal C11+ liquid yields, supporting sustainable chemical recycling ...
Yuzhen Ge   +6 more
wiley   +1 more source

CO2 methanation: deciphering the role of dopants (Mn, Co, and Cu) in Ni/SiO2 catalysts prepared by sol-gel chemistry

open access: yes, 2023
CO2 methanation is effectively catalyzed by Ni-based catalysts, and reactivity can be further tuned by the addition of promoters. Deciphering the relationship between the promoter in Ni-based catalysts and the corresponding catalytic performance in CO2 ...
Yingrui, Zhao   +3 more
core   +1 more source

Enhanced Photocatalytic H2O2 Production on Terpyridine‐Based Acrylonitrile‐Linked Covalent Organic Frameworks with Asymmetric Localized Electron Distribution

open access: yesAdvanced Materials, EarlyView.
Asymmetric localized electron distribution has been optimized in covalent organic frameworks to enhance *O2 adsorption and facilitate charge transfer, boosting photocatalytic two‐electron transfer oxygen reduction toward H2O2 production from water and air.
Qinglan Zhao   +12 more
wiley   +1 more source

Ni Nanoparticles on Reducible Metal Oxides (Sm2O3, CeO2, ZnO) as Catalysts for CO2 Methanation

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2021
The activity of reducible metal oxide Sm2O3, CeO2, and ZnO as Ni nanoparticles support was investigated for CO2 methanation reaction. CO2 methanation was carried out between 200 °C to 450 °C with the optimum catalytic activity was observed at 450 °C. The
Athirah Ayub   +2 more
doaj   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

open access: yesAdvanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan   +6 more
wiley   +1 more source

Enhanced CO2 methanation through electronic modification of Ru to Ni in Ni–Al hydrotalcite-derived catalysts

open access: yesGreen Energy & Environment
Nickle-based catalysts are commonly used for CO2 methanation. However, there is still potential to improve their catalytic performance under mild conditions.
Junming Zeng   +7 more
doaj   +1 more source

Methanation of CO2 on supported rhodium catalyst [PDF]

open access: yesJournal of Catalysis, 1981
Abstract The synthesis of methane from CO 2 and H 2 was investigated on supported Rh catalysts. The adsorbed species present on the catalysts were characterized by infrared spectroscopy. The hydrogenation of CO 2 on Rh Al 2 O 3 occurred at a measurable rate above 443 K, yielding exclusively methane. The rate of methane formation on
Solymosi Frigyes   +2 more
openaire   +2 more sources

VOx promoted Ni catalysts supported on the modified bentonite for CO and CO2 methanation

open access: yes, 2015
Ni catalysts supported on the raw bentonite (RB) and the acid-alkali treated bentonite (B), which were prepared by the impregnation method, were tested for methanation of CO2 and CO respectively to produce synthetic natural gas (SNG).
Xu, Guangwen   +9 more
core   +1 more source

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