We are not including the contribution of inert gas for whsv, but we mention the inert gas to the hydrocarbon ratio
Yes the weight hourly space velocity ( WHSV) explained it how many reactant contact on active sites of catalyst = 1/ contact time per hour. Therefor the contribution of inert gass is insignificance in this study.
You need to include the inert. WHSV is a measure of residence time or contact time with the catalyst. The inert affects this.
When using WHSV we relate the flow of the stock feed to the loading of the catalyst, the inert gas flow is mentioned in addition. When using GHSV or LHSV we include the volume of the inert gas or the solvent, since these values are the measure of the contact time.
Hi
In Weight Hour Space Velocity= volumetric flow rate (or feed flow rate)/ mass of the catalyst
In case of flow rate 100ml/min and catalyst weight 50 mg
WHSV * 60 = 99960 ~ 100,000 ml g-1h-1
The space velocity (SV) is defined as ‘the overall measure of reactor performance for high reaction rates’ (gas phase reaction/heterogeneous systems), the equation is based on the volume
Have a very good day and best of luck
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