Results 31 to 40 of about 40,458 (261)

Effect of Pt on Zn-Free Cu-Al Catalysts for Methanol Steam Reforming to Produce Hydrogen [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2018
Steam reforming of methanol can be considered as an attractive reaction aiming at hydrogen production for PEM fuel cells. Although Cu/Al-contained catalysts are considerably evaluated in this reaction, further evaluation is essential to evaluate the ...
Mehran Jafari, Abdullah Irankhah, Masoud Mahmoudizadeh, Najmeh Hoshyar   +3 more
doaj  

Impact of Liquid-Liquid Hydrodynamic Focusing on the Efficiency of Heterogeneous Microreactors: Numerical Solution [PDF]

Iranian Journal of Chemical Engineering
Most of the reactions that occur in microreactors take place on the surface, so it is important to keep the reactants close to the reactive wall. One effective technique in this field is the single-phase hydrodynamic focusing.
Yaser Kazemi, Abdullah Irankhah
doaj   +1 more source

Solar-hydrogen fuel-cell vehicles [PDF]

Transportation Research Part A: Policy and Practice, 1993
Abstract Hydrogen is an especially attractive transportation fuel. It is the least populating fuel available, and can be produced anywhere there is water and a clean source of electricity. A fuel cycle in which hydrogen is produced by solar-electrolysis of water, or by gasification of renewably grown biomass, and then used in a fuel-cell powered ...
DeLuchi, Mark A., Ogden, Joan M.
openaire   +3 more sources

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Morphological Control of TiO2 Supports for Enhanced Pt‐Catalyzed Methylcyclohexane Dehydrogenation

Small Science
Efficient and durable catalysts are essential for the practical implementation of dehydrogenation processes in liquid organic hydrogen carrier (LOHC) systems.
Yujung Jung, Najwa Fatimah Somanjaya, Hyunsik Hwang, Yoondo Kim, Hyangsoo Jeong, Yongmin Kim, Keunsoo Kim, Minseok Bae, Suk Woo Nam, Muhammad Ridwan, Wangyun Won, Hyuntae Sohn   +11 more
doaj   +1 more source

Methanol Steam Reforming Catalyzing over Cu/Zn/Fe Mixed Oxide Catalysts [PDF]

Iranian Journal of Chemical Engineering, 2017
Methanol steam reforming plays a pivotal role to produce hydrogen for fuel cell systems in a low temperature range. To accomplish higher methanol conversion and lower CO production, the reaction was catalyzed by CuZnFe mixed oxides.
A. Irankhah, M. Jafari, M. Mahmoudizadeh
doaj  

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source

Controlled Growth of α-Al₂O₃ Nanofilm on FeCrAl Alloy as an Effective Cr Barrier for Solid Oxide Fuel Cell (SOFC) Cathode Air Pre-Heaters

Energies
Solid oxide fuel cell (SOFC) systems often employ metallic cathode air pre-heaters (CAPHs), frequently made from alloys with high chromium (Cr) content, to recover thermal energy from exhaust gases and pre-heat incoming air and fuel.
Kun Zhang, Ahmad El-Kharouf, Robert Steinberger-Wilckens   +2 more
doaj   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Triple-Layer Porous Transport Layers with Ultra-High Porosity for Enhanced Oxygen Transport and Catalyst Utilization in Water Electrolysis

Nano-Micro Letters
Highlights A novel triple-layer Ti-porous transport layer (PTL), fabricated using a practical and scalable tape casting and roll calendering process, enhances catalyst utilization by increasing interfacial contact area and the triple-phase boundary.
Seong Hyun Park, Young Je Park, Seungsoo Jang, Pilyoung Lee, Soobin Yoon, Young-June Park, Chi-Young Jung, Kang Taek Lee   +7 more
doaj   +1 more source