Results 111 to 120 of about 211,409 (307)

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Incorporação de nanobastões de carbeto de silício em matrizes cimentícias [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Civil, Florianópolis, 2015.Desde a sua descoberta, os nanomateriais vêm despertando interesse no desenvolvimento tecnológico de ...
Azevedo, Nágilla Huerb de
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Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Synergistic damage behavior of He ion irradiation and molten salt corrosion in SiC at 750 °C

Journal of Advanced Ceramics
CVD SiC samples exposed to 400 keV He ion irradiation at 750 °C were subsequently corroded in FLiNaK molten salt at 750 °C for 166 h. After corrosion, the dissolution of Si led to the formation of a carbon-rich layer and obvious denudation of the SiC ...
Jianfeng Zhang, Lin Zhao, Jinlei Yang, Qiantao Lei, Jun Lin, Ya Tang, Jianjian Li   +6 more
doaj   +1 more source

Building of super high-efficiency processing technology based on innovative concept (Establishment of effective polishing process of SiC substrate using Dilatancy pad tool with bowl feed method)

Nihon Kikai Gakkai ronbunshu, 2015
In this study, we propose innovative polishing method for hard-to-process semiconductor substrate such as SiC. Our innovative polishing method mainly consists of 2 technologies.
Toshiro K. DOI, Kiyoshi SESHIMO, Tsutomu YAMAZAKI, Masanori OHTSUBO, Hideaki NISHIZAWA, Sachi MURAKAMI, Daizo ICHIKAWA, Yoshio NAKAMURA, Tadakazu MIYASHITA, Yoshihide KAWAMURA, Masataka TAKAGI, Hiroshi KASHIWADA, Hideo AIDA   +12 more
doaj   +1 more source

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source

Microstructure and mechanical properties of aluminium based nanocomposites strengthened with alumina and silicon carbide [PDF]

, 2014
Al-Al₂O₃ and Al-4wt%Cu-SiC metal matrix nanocomposites were studied because these materials have a potential for offering good ductility, high strength, and high electrical and/or thermal conductivity, which make them ideal for engineering applications ...
Gazawi, Amro Abdul-Karim
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Microwave-Assisted Catalytic Cleavage of C–C Bond in Lignin Models by Bifunctional Pt/CDC-SiC [PDF]

, 2019
We herein reported a microwave-assisted catalytic cracking (MACC) strategy for 5-5′ C­(phenyl)–C­(phenyl) bonds cleavage using 2,2′-biphenol (2-BP) as the kraft lignin model.
Sheldon Q. Shi (6593084), Yonghao Ni (1841770), Wenliang Wang (1233804), Xinping Li (395794), Min Wang (21070), Liping Cai (1863568), Chao Duan (634393)   +6 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

An In-Situ TEM Study of High Temperature Helium Irradiation of 4H-SiC [PDF]

SiC is an excellent candidate material for use in fusion and fission nuclear reactors. The work done in this thesis aims to understand the behaviour of SiC under He irradiation at high temperatures.
Shen, Qiang
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