Seeking some knowledge about catalysts
Thread Content
Catalyst activity has a significant impact on the operating conditions of hydrocracking, product yield, and product properties; increasing activity can reduce reactor temperature and pressure, as well as increase space velocity or decrease the hydrogen-to-oil ratio. What does this sentence mean? Please explain it.
Both reaction temperature and reaction pressure can promote the progress of the hydrogenation reaction; reducing the space velocity and increasing the hydrogen-to-oil ratio can also facilitate the hydrogenation reaction. With higher catalyst activity, the temperature and pressure required to achieve the same reaction results can be reduced slightly. A higher activity also allows more reactant to be processed in the same amount of time, which in turn enables a reduction in the hydrogen-to-oil ratio as well.
I’m sorry, I don’t quite understand. Could you please provide a detailed explanation? What I want to know is: increasing the activity of a catalyst can be achieved by lowering the reaction temperature and pressure, increasing the space velocity, and reducing the hydrogen-to-oil ratio. What do these mean, and why do these conditions help to increase the catalyst’s activity? Generally, to increase the reactivity of a reaction, one raises the reaction temperature or the reaction pressure; it’s exactly the opposite of what he said. What does he mean by an increase in catalyst activity?
You can think of it this way: the new catalyst has high activity, right? Perhaps the initial reaction temperature is 410°C, with a reaction pressure of 16.8 MPa ； When the catalyst’s activity decreases after being in use for some time, the reaction temperature may need to be 420°C and the reaction pressure 17.0 MPa ； With the same hydrogen-to-oil ratio, the space velocity is also the same. . . :Q: If the original poster still doesn’t understand, there’s nothing I can do
By increasing catalyst activity, I mean lowering the temperature, not raising it. What you mean by raising the temperature refers to the reactivity of the reaction – increasing the temperature is necessary to boost its reactivity. It refers to SOR and EOR. I'm talking about the activity of the catalyst – why lower the temperature and increase the space velocity?
To achieve a certain reaction outcome, the activity of the catalyst itself, as well as factors such as temperature, pressure, and the hydrogen-to-oil ratio, all have an impact on the reaction – this is something that can be confirmed, right? If the activity of the catalyst itself increases, allowing it to achieve the same reaction results as before the increase in activity, can the reaction temperature be appropriately reduced? Or in other words, the activity of the catalyst and the reaction conditions were both 1, and the resulting reaction outcome was 2. That is, 1+1=2, right? Now that the catalyst activity is 1.5, does that mean 1.5 + 0.5 = 2? The temperature can be lowered now, right?
Isn’t it true that good catalyst performance allows one to achieve the same results as under high temperature and pressure at low temperature and pressure?
That seems to be the meaning indeed; that’s the correct answer.
I felt the same when I read it, and that’s how I’ve understood it all these years; let’s keep in touch more often!
I just noticed your custom title. . . Just like at Xiaomuchong Chemical, I was the first moderator for porn-related content on that forum there; I’m ashamed
Haha, thanks for the explanation. “First*Porn Examiner” is a name I gave myself; I feel ashamed in front of such an expert.