Results 71 to 80 of about 13,002 (297)

Recent Progress in the Phase‐Controlled Synthesis of Ruthenium Nanocrystals for Catalytic Applications

Advanced Materials, EarlyView.
Template effect and kinetic control enable crystal‐phase engineering of Ru nanocrystals, granting access to either metastable fcc‐Ru or stable hcp‐Ru with distinct surface structures, thermal stabilities, and catalytic behaviors. Moreover, the hcp‐Ru can further serve as an epitaxial template to direct Pd and Rh nanocrystals into the metastable hcp ...
Jianlong He, Zhiqi Wang, Jiaqi Guan, Younan Xia   +3 more
wiley   +1 more source

Kinetic studies of CO2 methanation over a Ni/γ-Al2O3 catalyst using a batch reactor [PDF]

, 2016
The methanation of CO₂ was investigated over a wide range of partial pressures of products and reactants using a gradientless, spinning-basket reactor operated in batch mode. The rate and selectivity of CO₂ methanation, using a 12 wt% Ni/γ-Al₂O₃ catalyst,
Dennis, JS, McGregor, J, Sederman, AJ, Yang Lim, J   +3 more
core  

Pulsed Electrolysis Prevents Sulfur Poisoning for Sustained Sulfide Valorization

Advanced Materials, EarlyView.
Integrating pulsed electrolysis with Sc‐doped NiFe‐LDH enables sustainable sulfide valorization, achieving >500 h stability, 99.8% efficiency. Moreover, this technology produces high‐purity sulfur and sodium formate, boosting profit by 121% to $1,294.7 per tonne of hydrogen.
Zhiyan Hou, Yangbo Ma, Yufeng Wu, Weijin Cao, Zhengxiao Guo, Changlong Wang   +5 more
wiley   +1 more source

Exploring a Potentially Significant New(?) Mechanism for Methane Generation on Mars [PDF]

An unexplored mechanism for methane production on Mars is presented here. Meteor showers have been hypothesized [1] as an explanation for episodic martian methane events [2-7], as the timing of meteor showers consistently correlates with the episodic ...
Fries, M.
core   +1 more source

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

Advanced 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, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

A 3D-printed metal-supported gyroid Ni/Al2O3 catalyst for CO2 methanation

Journal of CO2 Utilization
The utilization of 3D-printing in catalyst production for CO2 methanation has emerged as a response to the challenges posed by the highly exothermic reaction and high gas space velocity, conditions that necessitate enhanced heat and mass transfer while ...
Kedar Bharat Jivrakh, Ayesha Alkhoori, Miguel Palomino, L.M. Andrés-Olmos, Antonio Chica, Fernando Rey, Susana Valencia, Kyriaki Polychronopoulou, Rashid Abu Al-Rub, Nahla Alamoodi, Georgios N. Karanikolos   +10 more
doaj   +1 more source

The Influence of Heat Input Ratio on Electrical Power Output of a Dual-Core Travelling-Wave Thermoacoustic Engine [PDF]

This paper presents an analytical and experimental investigation of an electricity generator that employs a two-stage looped tube travellin -wave thermoacoustic prime-mover to deliver acoustic power from heat energy, a loudspeaker to extract electricity ...
Hann, D., Kisha, W., McKechinie, J., Riley, P. H.   +3 more
core  

Kinetic study of high temperature water gas shift reaction [PDF]

, 2011
The water gas shift reaction has been run at high temperature in a packed bed reactor with a nickel catalyst. The outlet was analyzed by gas chromatography.
Vannier, Damien
core  

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source

Bimetallic Ni-Fe Supported by Gadolinium Doped Ceria (GDC) Catalyst for CO2 Methanation

Bulletin of Chemical Reaction Engineering & Catalysis
CO2 conversion into fuels and high value-added chemical feedstocks, such as methane, has gained novel interest as a crucial process for further manufacturing multi-carbon products.
Anis Kristiani, Kaoru Takeishi, Siti Nurul Aisyiyah Jenie, Himawan Tri Bayu Murti Petrus   +3 more
doaj   +1 more source