Results 111 to 120 of about 2,176,446 (301)

Transfer hydrogenation of aldehydes on amphiphilic catalyst assembled at the interface of emulsion droplets

, 2008
An amphiphilic polymer-based iridium catalyst assembled at the interface of emulsion droplets shows a remarkable rate acceleration for the transfer hydrogenation of aldehydes in water, which may result from the high surface area of the emulsion droplets ...
Li, Jun, Gao, Jinbo, Zhang, Yanmei, Jia, Guoqing, Li, Can, 李灿, Zhong, Lin, Han, Difei   +7 more
core   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Mechanochemical Piezoelectric Catalysis: Advancing the Hydrogenation of Alkenes

Advanced Science
Alkene hydrogenation reactions are essential processes widely utilized across diverse scientific fields for the production of pharmaceuticals, natural products, and various functional materials.
Zixi Ai, Mengting Liu, Xiaohong Wang, Xiaochun He, Xuemei Zhang, Zhong Lian   +5 more
doaj   +1 more source

Improving Heat Efficiency of Aniline Production Process by Modifying Heat Transfer Fluid Looping System in Heating and Cooling Process

Journal of Chemical Engineering Research Progress
The nitrobenzene hydrogenation process is a highly exothermic reaction which causes the product temperature will increase and then needs to be cooled down with a heat exchanger.
Muhammad Ahdan, Alfan Rizky Saputra, Rifqy Ivan, Yohanes Mangarohontua Panjaitan   +3 more
doaj   +1 more source

Density Measurement of Irradiated and Nonirradiated Zirconium Oxide by Ptychographic X‐Ray Computed Tomography (PXCT)

Advanced Engineering Materials, EarlyView.
Mass density governs the protective behavior of oxide layers on nuclear fuel cladding. Ptychographic X‐ray computed tomography measures zirconium oxide grown on Zircaloy‐4 under reactor and autoclave conditions, revealing nearly identical bulk densities of 5.1 ± 0.80 g cm−3.
Okan Yetik, Liliana I. Duarte, Malgorzata G. Makowska, Roland Brütsch, Andrej Bullemer, Ana Diaz, Mirko Holler, Andreas Menzel, Johannes Bertsch, Pavel Trtik   +9 more
wiley   +1 more source

Optimizing heat transfer rate for efficient CO2-to-chemical conversion in CO2 methanation and CO2 hydrogenation reactions

Journal of CO2 Utilization
CO2 utilization is an evolving technology that converts CO2 into CH4 or other chemicals upon its reaction with H2, which can be supplied from water electrolysis using the surplus solar and wind power.
Yujin Choi, Jae Jun Jang, Sun-Mi Hwang, Myung Won Seo, Doyeon Lee, Soon Kwan Jeong, Ho-Jung Ryu, Sun-A. Choi, Byungwook Hwang, Hyungseok Nam   +9 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Pressure-induced generation of heterogeneous electrocatalytic metal hydride surfaces for sustainable hydrogen transfer

Nature Communications
Metal hydrides are crucial intermediates in numerous catalytic reactions. Intensive efforts have been dedicated to constructing molecular metal hydrides, where toxic precursors and delicate mediators are usually involved.
Laihao Luo, Xinyan Liu, Xinyu Zhao, Xinyan Zhang, Hong-Jie Peng, Ke Ye, Kun Jiang, Qiu Jiang, Jie Zeng, Tingting Zheng, Chuan Xia   +10 more
doaj   +1 more source

Room-temperature Ru(II)-catalyzed transfer hydrogenation of ketones and aldehydes in air

, 2009
Transfer hydrogenation (TH) of ketones and aldehydes was efficiently carried out in 2-propanol at room temperature by means of a ruthenium(II) complex catalyst bearing a 2-(benzoimidazol-2-yl)-6-(pyrazol-1-yl)pyridine ligand.
Yan, Shenggang, Zhao, Miao, Yu, Zhengkun, Li, Yang, 余正坤   +4 more
core   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source