منابع مشابه
Surface Structure and Catalytic CO Oxidation Oscillations
A cellular automaton model is used to describe the dynamics of the catalytic oxidation of CO on a Pt(100) surface. The cellular automaton rules account for the structural phase transformations of the Pt substrate, the reaction kinetics of the adsorbed phase and diffusion of adsorbed species. The model is used to explore the spatial structure that underlies the global oscillations observed in so...
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The electron donating properties, surface acidity/basicity and catalytic activity of lanthana for various dopaut concentrations of strontium are reported at two activation temperatures. The catalytic activity has been correlated with electron donating properties and surface acidity/basicity of the oxide.
متن کاملThe role of carburization temperature on the molybdenum carbide surface and their catalytic activity
The surfaces of molybdenum carbide were varied by changing the carburization temperature between 823 and 1123 K. The surfaces of the catalytic material were investigated using in-situ temperature program carburization followed by temperature program reduction and oxidation. In-situ temperature program oxidation (TPO) showed the surfaces of the catalysts contain a similar amoun...
متن کاملQuaternary structure and catalytic activity of the Escherichia coli ribonuclease E amino-terminal catalytic domain.
RNase E is an essential endoribonuclease that plays a central role in the processing and degradation of RNA in Escherichia coli and other bacteria. Most endoribonucleases have been shown to act distributively; however, Feng et al. [(2002) Proc. Natl. Acad. Sci. U.S.A. 99, 14746-14751] have recently found that RNase E acts via a scanning mechanism. A structural explanation for the processivity o...
متن کاملEffect of various fuels on structure and photo-catalytic activity of TiO2 nano-crystalline prepared by microwave-assisted combustion method
Nano-crystalline TiO2 were synthesized by combustion method using metal nitrate solution and urea, glycin and citric acid fuels. Microwave irradiation was used as heating source. X-ray diffraction, scanning electron microscope as well as Fourier transform infrared spectroscopy were performed to characterize the obtained samples. X-ray diffraction patterns revealed that in the case of citric aci...
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ژورنال
عنوان ژورنال: Journal of the Surface Finishing Society of Japan
سال: 1995
ISSN: 0915-1869,1884-3409
DOI: 10.4139/sfj.46.7