نتایج جستجو برای: nano metal oxides

تعداد نتایج: 259901  

2003
Yongsheng Chen Israel E. Wachs

The molecular structures and reactivity of tantalum oxide-supported metal oxide (V2O5, Nb2O5, CrO3, MoO3, WO3, and Re2O7) catalysts were determined by Raman spectroscopy and the methanol oxidation chemical probe reaction, respectively. The metal oxides form a twodimensional surface metal oxide overlayer on the tantalum oxide support. Under ambient conditions, the hydrated surface metal oxide sp...

2017
Huigang Zhang Hailong Ning John Busbee Zihan Shen Chadd Kiggins Yuyan Hua Janna Eaves Jerome Davis Tan Shi Yu-Tsun Shao Jian-Min Zuo Xuhao Hong Yanbin Chan Shuangbao Wang Peng Wang Pengcheng Sun Sheng Xu Jinyun Liu Paul V Braun

Materials synthesis often provides opportunities for innovation. We demonstrate a general low-temperature (260°C) molten salt electrodeposition approach to directly electroplate the important lithium-ion (Li-ion) battery cathode materials LiCoO2, LiMn2O4, and Al-doped LiCoO2. The crystallinities and electrochemical capacities of the electroplated oxides are comparable to those of the powders sy...

2001
J. Perkins J. Alleman J. del Cueto X. Li T. Coutts D. Young P. Parilla B. Keyes L. Gedvilas D. Balzar Q. Wang D. Ginley C. Duncan R. Stauber

New and optimized metal-oxide thin films for both transparent-conductor and antireflection coatings have the potential to significantly improve photovoltaic devices. One approach to this task of discovery and improvement is to use a parallel optimization, i.e., a combinatorial, approach. Using internal seed funds, we have developed the initial deposition, characterization and analysis tools nec...

2001
Arthur Amos Noyes

The results of a mechanistic study using ab initio theoretical methods are used to outline plausible mechanistic sequences for alkane, alcohol, and alkene oxidation by chromyl and molybdyl chlorides. We suggest that the second oxo group is intimately involved in the reaction sequence. This spectator oxo group is suggested to play a central role in stabilizing critical intermediates in these rea...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
babak salamatinia iman hashemizadeh abdullah ahmad zuhairi

four different alkaline earth metal oxides i.e. mgo, cao, sro and bao were used as heterogeneous catalysts for biodiesel production from palm oil. effects of critical process variables i.e. reaction time, methanol to oil ratio and temperature were investigated. the results were then fitted to a historical design to study the analysis of variance (anova), to characterize interactions between var...

Journal: :Science Foundation in China 2008

Journal: :Metal-Based Drugs 1996
Judith N. Burstyn

Session I" Overview of the Chemistry and Biochemistry of Nitrogen Oxides Prof. L. Ignarro, UCLA: The Biology of Nitric Oxide Prof. J. Enemark, Arizona: Transition Metal Complexes of Nitrogen Oxides Prof. W. Koppenol, ETH Zurich: Fundamental Chemistry of Nitrogen Oxides Prof. S. Bohle, Wyoming: Synthesis and Characterization of Higher Nitrogen Oxides Prof. J. Lipscomb, Minnesota: Nitric Oxide as...

Journal: :international journal of nanoscience and nanotechnology 2013
m. khorasani-motlagh m. noroozifar m. yousefi sh. jahani

a facile co-precipitation method for the synthesis of well-dispersed ndfeo3 nanocrystals is developed in the presence of octanoic acid as surfactant. co-precipitation can produce fine, high-purity, stoichiometric particles of single and multicomponent metal oxides. the product is characterized by fourier transform infrared spectroscopy (ft-ir), x-ray diffraction (xrd), scanning electron microsc...

2005
Srinivasan Muralidharan Tae-Hyun Ha Jeong-Hyo Bae Yoon-Cheol Ha Hyun-Goo Lee Kyung-Wha Park Dae-Kyeong Kim

Cylindrical titanium surface activated with mixed metal–metal oxides (MMO) (though similar to permanent impressed current titanium a i ( e o s g o c ©

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1996

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