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brendw2005
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Hi! Does anywone knows what happen with ammonia adsorption at pressures of 1-15 bar? thanks.
chemisttree said:
Yes.brendw2005 said:
After populating all of the various sites (including the possibility of multilayer sites...) the application of a lower pressure will cause the more weakly bound sites to give up ammonia before the strongly bound sites will. You called this "...strongest sites are recoverd after that the lowest one." There is a heat of desorption associated with this but I don't know what it is. You also need some information about the substrate to answer that one... When even higher pressures are applied prior to the application of the lower (desorption) pressure there is a possibility that additional modes of adsorption may be observed. These will be extremely weakly bound ammonia and may be difficult to measure.brendw2005 said:
brendw2005 said:
NH3 adsorption at high pressure refers to the process of ammonia molecules binding to a surface at pressures above the atmospheric pressure. This can occur in various environments, such as industrial processes or in the Earth's atmosphere.
NH3 adsorption at high pressure has several important applications, including gas storage, gas separation, and catalysis. It is also of interest in understanding atmospheric processes, such as the formation of acid rain.
NH3 adsorption at high pressure differs from low pressure adsorption in terms of the amount of ammonia molecules that can be bound to a surface. At high pressures, there is a higher concentration of ammonia molecules, which leads to stronger adsorption and a higher amount of molecules bound to the surface.
The factors that influence NH3 adsorption at high pressure include temperature, pressure, and the nature of the surface. Other factors such as the presence of other gases and the concentration of ammonia in the surrounding environment can also play a role.
NH3 adsorption at high pressure is studied using various techniques, such as gas adsorption measurements, surface analysis, and computational modeling. These methods help to understand the thermodynamics and kinetics of NH3 adsorption at high pressure and provide insights into the underlying mechanisms.