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Posted: Mon Mar 12, 2018 12:58 pm
What exactly is the difference between absorption and adsorption? How does adsorption work in relation to catalysts?
Posted: Mon Mar 12, 2018 1:32 pm
I think the difference between adsorption and absorption is that in absorption, substance goes into another substance else while in adsorption, a substance/molecule sits on top of the other. For heterogeneous catalysts I think the importance of adsorption vs. absorption is that the reactants sit on the SURFACE of the catalyst rather than going into the catalyst.
Posted: Mon Mar 12, 2018 2:31 pm
As Lavelle mentioned in class, I think the main difference between absorption and adsorption is that in absorption, a substance goes inside another substance (as in water into a sponge) whereas in adsorption, the reactants just sit on the surface of the catalyst.
Posted: Mon Mar 12, 2018 2:37 pm
What difference does it make when the reactants sit on the surface versus when they go inside?
Posted: Mon Mar 12, 2018 2:48 pm
At least from what I understand about it, I think one would just act as a cover whereas the other one would become part of the catalyst?? I'm not sure about this though.
Posted: Thu Mar 14, 2019 1:12 am
I think it would matter only in understanding what is happening to the reactant, it would be steeping into the catalyst instead of the catalyst taking in the reactant? I am not sure though
Posted: Thu Mar 14, 2019 1:13 am
I feel like as long you understand and can picture the situation when given an adsorption problem you shouldn't have to worry too much.
Posted: Thu Mar 14, 2019 10:52 pm
In Adsorption, Dr. Lavelle mentioned that you'd want to maximize the surface area of the catalyst so that more of it is making contact with the reactants. In absorption, that wouldn't really be a problem. I agree with Destiny that it's not something that we need to worry about too much.
Posted: Thu Mar 14, 2019 11:03 pm
Would an adsorption catalyst work differently in an equation? Or should I just know what it is compared to absorption
Posted: Thu Mar 14, 2019 11:27 pm
It wouldn't work differently; the chemical equation doesn't include the catalyst since it cancel out anyways.
Posted: Sun Mar 17, 2019 12:58 am
Adsorption occurs with a heterogeneous catalyst, it provides a solid surface area for compounds to react.
Posted: Sun Mar 17, 2019 1:01 am
It would still appear on either side of the equation as well when it comes to rate laws.
Posted: Mon Mar 09, 2020 3:10 pm
In adsorption, the reactants sit on top of the solution or catalyst, while absorption (as in the class example) is when water is absorbed by a sponge (so completely different meanings and uses in context).
Posted: Mon Mar 09, 2020 3:22 pm
Adsorption is when gas or solution binds to the surface of a catalyst at active sites, versus absorption which is when solution is basically soaked into a structure.