Mass of Gas Adsorbed Formula:
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Definition: This calculator determines the mass of gas adsorbed on a solid surface when the adsorption isotherm follows a linear relationship (n=1).
Purpose: It helps in understanding and quantifying gas adsorption processes, important in fields like catalysis, gas purification, and surface chemistry.
The calculator uses the formula:
Where:
Explanation: The mass of gas adsorbed is directly proportional to both the mass of adsorbent and gas pressure, with the adsorption constant as the proportionality factor.
Details: Accurate adsorption calculations are crucial for designing adsorption systems, predicting catalyst performance, and understanding surface interactions.
Tips: Enter the mass of adsorbent in kg, gas pressure in Pascals, and the adsorption constant. All values must be > 0.
Q1: What does n=1 mean in adsorption?
A: n=1 indicates a linear adsorption isotherm where the amount adsorbed is directly proportional to gas pressure.
Q2: How do I determine the adsorption constant?
A: The adsorption constant is typically determined experimentally for specific adsorbent-gas pairs at given temperatures.
Q3: What are typical units for the adsorption constant?
A: The units depend on the system but are typically kg/(kg·Pa) for this calculation.
Q4: Does this formula work for all pressure ranges?
A: No, it's only valid for low pressures where the linear relationship holds (Henry's law region).
Q5: What factors affect the adsorption constant?
A: Temperature, nature of adsorbent surface, and gas properties all influence the adsorption constant.