نتایج جستجو برای: hydride magnesium

تعداد نتایج: 42914  

In this research, DTA and TGA curves of titanium hydride powder in air with the heating rates of 5, 10, 20, 25, 30ºC/min were drawn, and XRD patterns of titanium hydride powder during heating rate 10ºC/min were prepared. Results showed that hydrogen comes out of titanium hydride in air during seven stages. And, by increasing heating rate, the mechanism of hydrogen emission from titanium hydride...

Journal: :Distilat: Jurnal Teknologi Separasi 2023

Catalytic hydrogenation is one of the most effective ways to convert CO2 high value-added chemicals, and it challenging improve catalytic activity product selectivity based on understanding catalysis mechanism process. In this work, organic phosphonic acid was innovatively employed tune single atom catalyst for methanol, effect fluoromethylphosphonic (FMPA) electronic structure molybdenum react...

Journal: :Organic & biomolecular chemistry 2013
Xiao-Qing Zhu Fei-Huang Deng Jin-Dong Yang Xiu-Tao Li Qiang Chen Nan-Ping Lei Fan-Kun Meng Xiao-Peng Zhao Su-Hui Han Er-Jun Hao Yuan-Yuan Mu

A classical but new kinetic equation to estimate activation energies of various hydride transfer reactions was developed according to transition state theory using the Morse-type free energy curves of hydride donors to release a hydride anion and hydride acceptors to capture a hydride anion and by which the activation energies of 187 typical hydride self-exchange reactions and more than thirty ...

1998
Zhixiong Guo Hyung Jin Sung

Metal hydride applications span a wide variety of tech! nologies\ e[g[\ energy conversion\ chemical compressors and hydrogen storage[ A knowledge of heat and mass transfer in a metal hydride reactor during the absorption and desorption of hydrogen is important for performance optimization of the reactor[ One of the key requirements in the design of metal hydride bed is the enhancement of the e}...

Journal: :Physical review 2021

Magnesium based alloys are promising solid materials for hydrogen storage. However, it is a real challenge to synthesise storage with high capacity and low dehydrogenation temperature. Here, we have performed extensively structural searches ternary magnesium-based compounds of ${\mathrm{Mg}}_{7}\mathrm{Nb}{\mathrm{H}}_{n}$ n ranging from 16 25 by calypso method first-principles calculations. We...

Journal: :Chemical communications 2016
C L Pitman O N L Finster A J M Miller

Attempts to generate a proposed rhodium hydride catalytic intermediate instead resulted in isolation of (Cp*H)Rh(bpy)Cl (1), a pentamethylcyclopentadiene complex, formed by C-H bond-forming reductive elimination from the fleeting rhodium hydride. The hydride transfer ability of diene 1 was explored through thermochemistry and hydride transfer reactions, including the reduction of NAD(+).

1997
Jin Soon Cha Suk Joung Moon Oh Oun Kwon Yong Rok Lee

Aluminum hydride, a very interesting and valuable reducing agent, has been widely used in numerous applications in organic syntheses. Jorgenson first reported the comparison in the reducing properties between lithium aluminum hydride and aluminum hydride on the reduction of cinnamaldehyde, and Brown and Yoon reported a systematic study on the reducing properties of aluminum hydride in THF. Fina...

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