Hello Vladimir, Thanks for the video. 2 questions I have, if you dont mind; i) Isnt the final slurry (powder+solution) too wet, as I can see from the video. ii) in costrast to your application, why dont you add the solution slowly (dropwise) to the powder, isnt it more favorable in terms of ensuring a homogenous distribution and more convenient reach of solution to the inner pores via capillary forces. Regards
Thank you! Iincipient wetness impregnation, or dry impregnation, or pore volume impregnation, involves contacting the support with an amount of the solution of the precursor of the active phase such that the pores will just be filled. You know this! The pore volume of the support can be determined via nitrogen physisorption or water uptake measurement. If we use more solution than the pore volume, the method is referred to as wet impregnation.You are right, we had to add little bit less water! You also right that solution have to be added dropwise for the used amount of support material!
Thank you so much! I'm a nanotech student and I need to take "Nanomaterials Synthesis I" online (corona virus) , and this video really help me to visualize the incipient wetness impregnation method.
@@vitanna5930 That's awsome! Hmm... well, I'm really new in all of this, but if you can make a video about ion exchange method or deposition-precipitation method, it would be great! :D Thank you!
for example - 1 g of 10wt%Ni/Al2O3 = 0.1g Ni +0.9g Al2O3; 0.1gNi= 0.0017 mol of Ni => you have to take 0.0017mol of Ni(NO3)2*6H2O => m=0.0017mol*291g/mol=0.5g
Hi Vladimir, thank you for the useful video. Please can i ask if the sample you used for titration was different to the one you used to impregnate? In other words, is a fresh sample required? Thank you in advance :)
Sir I have to prepare, Ni/Al2O3 catalyst with 15 percent nickel content, can you plz, suggest me a demo calculation, how much amount of which ingredient should i use...?
Hello, thank you for the video. I have two questions. 1) Is it right to put water in the precursor to make a solution, and then add the precursor solution little by little into the support with a pipette? 2) I want to make a catalyst with Cr10 wt% content using Cr(NO3)3 and TiO2. How much Cr(NO3)3, TiO2, and water do you put in each?
Yes, you need to dissolve the precursor in the appropriate amount of water (H2O) and then transfer the solution into the support either by pipette or carefully pouring it from the cup while stirring the support. The method of transfer will depend on the volume of the solution. For example, if you would like to prepare a 10 wt.% Cr/TiO2 catalyst with a total weight of 5g, you will need to take 0.49g of TiO2 and 0.05g of Cr. For the 0.05g of Cr, you should use Cr(NO3)3·3H2O. Don't forget about the water (H2O) content! To calculate the amount of Cr(NO3)3·3H2O needed, you can use the following calculation: 0.05g (Cr) / 52g/mol = 9.6e-4 mol. Therefore, you need to take 9.6e-4 mol * 400 g/mol (Cr(NO3)3·3H2O) = 0.385g. The amount of water (H2O) required can be determined through the support titration, as demonstrated in the video.
Hi, can I ask you some questions? I am trying to make the Ni/TiO2 with the loading of Ni is 8%wt catalyst using incipient wetness impregnation. The chemical I use is Nickel nitrate hexahydrate - Ni(NO3)2.6H2O. How can I know or calculate the concentration of the precursor solution and the amount of TiO2 to achieve the 8%wt of Ni content?
for example - 10g catalyst 8Ni/TiO2. You have to take 9.2 g TiO2 and 0.8gNi. 0.8g Ni =0,8g/58.7g/mol=0,0136 mol. You have to take 0,0136 mol of Ni nitrate and dissolve in H2O . Follow the video to find the proper amount of water!
@@vgalvita Hi, I just want to make sure if I understand the video correctly. So I have to determine the amount of water by adding water slowly to the TiO2 support until the mixture become sticky (without no excess water). Let's say the amount of water is A mL. So I have to mix A mL of water and 0.8 gram Ni nitrate catalyst for 9.2g TiO2 to have the final Ni/TiO2 catalyst with the loading of Ni is 8%. Do I understand it correctly? Thank you so much, and sorry if I bother you. I am new to this area.
Hi, Sir, could you explain why avoid to the excess amount of water here. Considering about the metal ion adsorbed on the surface of material (some matter with low surface area). Does the high volume of solvent will helps to wet the support materials?
it is a good question! You metal will be uniformly distribute in your support, (inside of pores) if the volume of water with metal salt is equal to the pore volume. But in the case of excess amount of water the metal salts will mainly "deposit" on surface during drying. The amount of metal inside of pore will be much less. May be this is what you like! :-)
Hi! I want to ask if the catalyst you synthesized was produced as granules? And if so, what particle size can we get by using this method? Actually, I am also using wet impregnation method but my catalyst was produced as a big agglomerated lump. I am wondering why this happened. Thank you in advance!
Hello Vladimir,
Thanks for the video. 2 questions I have, if you dont mind; i) Isnt the final slurry (powder+solution) too wet, as I can see from the video. ii) in costrast to your application, why dont you add the solution slowly (dropwise) to the powder, isnt it more favorable in terms of ensuring a homogenous distribution and more convenient reach of solution to the inner pores via capillary forces.
Regards
Thank you! Iincipient wetness impregnation, or dry impregnation, or
pore volume impregnation, involves contacting the support with an amount of
the solution of the precursor of the active phase such that the pores will just be
filled. You know this! The pore volume of the support can be determined via nitrogen physisorption or water uptake measurement. If we use more solution than the pore volume,
the method is referred to as wet impregnation.You are right, we had to add little bit less water!
You also right that solution have to be added dropwise for the used amount of support material!
@@vgalvita Thanks again. It is a very useful demonstration.
Thank you so much! I'm a nanotech student and I need to take "Nanomaterials Synthesis I" online (corona virus) , and this video really help me to visualize the incipient wetness impregnation method.
you are welcome! I will prepare new videos to visualize the process of materials preparation. Do you like to see something specific?
@@vitanna5930 That's awsome! Hmm... well, I'm really new in all of this, but if you can make a video about ion exchange method or deposition-precipitation method, it would be great! :D Thank you!
I am close to finish Sol-gel method: citric acid method. Next will be deposition precipitation!
@@vgalvita Thank you so much! 🤩
@@yunuhenbadillo5186 HAHAHHAHA now i think its my turn
Thank you for video, I want to prepare 10% Nickel content in
Ni/Al2O3 catalyst, How much amount of Nickel nitrate and Al2O3 should i used
for example - 1 g of 10wt%Ni/Al2O3 = 0.1g Ni +0.9g Al2O3; 0.1gNi= 0.0017 mol of Ni => you have to take 0.0017mol of Ni(NO3)2*6H2O => m=0.0017mol*291g/mol=0.5g
Hi Vladimir, thank you for the useful video. Please can i ask if the sample you used for titration was different to the one you used to impregnate? In other words, is a fresh sample required? Thank you in advance :)
Hi, the sample can be same but you have to dry it.
Sir I have to prepare, Ni/Al2O3 catalyst with 15 percent nickel content, can you plz, suggest me a demo calculation, how much amount of which ingredient should i use...?
Hello, thank you for the video. I have two questions. 1) Is it right to put water in the precursor to make a solution, and then add the precursor solution little by little into the support with a pipette? 2) I want to make a catalyst with Cr10 wt% content using Cr(NO3)3 and TiO2. How much Cr(NO3)3, TiO2, and water do you put in each?
Yes, you need to dissolve the precursor in the appropriate amount of water (H2O) and then transfer the solution into the support either by pipette or carefully pouring it from the cup while stirring the support. The method of transfer will depend on the volume of the solution.
For example, if you would like to prepare a 10 wt.% Cr/TiO2 catalyst with a total weight of 5g, you will need to take 0.49g of TiO2 and 0.05g of Cr. For the 0.05g of Cr, you should use Cr(NO3)3·3H2O. Don't forget about the water (H2O) content! To calculate the amount of Cr(NO3)3·3H2O needed, you can use the following calculation: 0.05g (Cr) / 52g/mol = 9.6e-4 mol. Therefore, you need to take 9.6e-4 mol * 400 g/mol (Cr(NO3)3·3H2O) = 0.385g. The amount of water (H2O) required can be determined through the support titration, as demonstrated in the video.
Do you have any publisjed paper or XRD report of it?
pubs.acs.org/doi/full/10.1021/acscatal.5b00357
Hello sir, i want to use this method but my precursor is nickel chloride. What amount of nickel chloride need i need for 12wt%
1g catalyst= 0.12g Ni - 0.88g support. Amount of Ni in catalyst = 0.12g / 59g/mol = 0.002 mol --> amount of NiCl2 = 0.002mol * 129 g/mol = 0.26g
Hi, can I ask you some questions? I am trying to make the Ni/TiO2 with the loading of Ni is 8%wt catalyst using incipient wetness impregnation. The chemical I use is Nickel nitrate hexahydrate - Ni(NO3)2.6H2O. How can I know or calculate the concentration of the precursor solution and the amount of TiO2 to achieve the 8%wt of Ni content?
for example - 10g catalyst 8Ni/TiO2. You have to take 9.2 g TiO2 and 0.8gNi. 0.8g Ni =0,8g/58.7g/mol=0,0136 mol. You have to take 0,0136 mol of Ni nitrate and dissolve in H2O . Follow the video to find the proper amount of water!
@@vgalvita Hi, I just want to make sure if I understand the video correctly. So I have to determine the amount of water by adding water slowly to the TiO2 support until the mixture become sticky (without no excess water). Let's say the amount of water is A mL. So I have to mix A mL of water and 0.8 gram Ni nitrate catalyst for 9.2g TiO2 to have the final Ni/TiO2 catalyst with the loading of Ni is 8%. Do I understand it correctly?
Thank you so much, and sorry if I bother you. I am new to this area.
Hi, Sir, could you explain why avoid to the excess amount of water here. Considering about the metal ion adsorbed on the surface of material (some matter with low surface area). Does the high volume of solvent will helps to wet the support materials?
it is a good question! You metal will be uniformly distribute in your support, (inside of pores) if the volume of water with metal salt is equal to the pore volume. But in the case of excess amount of water the metal salts will mainly "deposit" on surface during drying. The amount of metal inside of pore will be much less. May be this is what you like! :-)
Hi!
I want to ask if the catalyst you synthesized was produced as granules? And if so, what particle size can we get by using this method? Actually, I am also using wet impregnation method but my catalyst was produced as a big agglomerated lump. I am wondering why this happened. Thank you in advance!
Try to mix the impregnated support powder during drying process.
Try to mix the impregnated support powder during drying process
Can u prepare catalyst for shift reaction which leads to hydrogen production.
Yes, you can! I can help if you give me more information.
Hello sir, if I have 0.2 cm3/g of pore volume for my alumina, how much will volume of water and nickel nitrate will I need?
The amount of nickel nitrate depend on amount of Ni you need.
Thank you!
you are welcome!