How should this sentence be translated and understood?
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The sieve is operated under ambient conditions, as the absorption isotherms show that loadings increase as temperature decreases. This applies in processes such as the precise dehydration of ethylene and methanol.
Molecular sieves operate at atmospheric pressure, and their heat absorption increases as the temperature decreases
Generally, the term isotherm refers to adsorption, not absorption. An isotherm represents the relationship between the amount of surface adsorption at a constant temperature and the gas pressure or liquid concentration
The sieve is operated under ambient conditions, as the absorption isotherms show that loadings increase as temperature decreases. The symbol ‘is’ is used to indicate repetition, and since the verb following it is ‘show’, it should be translated as isotherms. The sieve operates at normal temperature and pressure, and the isothermal adsorption curve shows that the loading increases as the temperature decreases.
This post was last edited by tigerli358_Can on 2010-7-21 at 11:09. The adsorption isotherms obtained from the Freundlich adsorption isotherm equation are quite commonly used. The term commonly used to describe the amount of adsorption is “adsorption capacity”. See also: Langmuir adsorption.
How come \"since\" wasn’t translated? Molecular sieves operate at room temperature, as the adsorption isotherms show that the amount of adsorption increases as the temperature decreases. Personally, I think it’s not at normal pressure, as high pressure and low temperature are favorable for adsorption. So it should be at room temperature
This post was last edited by leteblink on 2010-7-22 at 14:18. Reply to 6# ajie8352: If it is a liquid, the parameters that affect the amount of adsorption are temperature and concentration, not pressure. The original text is rather contradictory: regarding “a ambient conditions”, it seems that you can analyze based on the specific circumstances to determine whether ambient condition refers to temperature, pressure, or both.
Generally, adsorption occurs at high pressure and low temperature, while desorption takes place at low pressure and high temperature. That’s why I said what I said above.
The sieve is operated under ambient conditions, as the absorption isotherms show that the loading increases as the temperature decreases. Molecular sieves are operated at normal temperature and pressure; according to the isothermal adsorption curves, the loading on these molecular sieves generally increases as the temperature drops.