Al(OH)3 as an electrolyte. What does it produce?

  • Thread starter Thread starter gabede
  • Start date Start date
Click For Summary
SUMMARY

The discussion centers on the electrolysis of Aluminum Hydroxide (Al(OH)3) using direct current (DC), resulting in the production of solid Aluminum Oxide (Al2O3) at the negative terminal and the evolution of hydrogen and oxygen gases at the respective terminals. The positive terminal experiences corrosion, leading to the formation of tiny holes. The chemical reaction involved is Al(OH)3 → H+ + 1/2O2 + AlO2, although the stable form of aluminum oxide is confirmed to be Al2O3. Participants also mention the anodization process, which involves the electrolytic thickening of the oxide layer on aluminum.

PREREQUISITES
  • Understanding of electrolysis and its principles
  • Familiarity with Aluminum Hydroxide (Al(OH)3) and its chemical properties
  • Knowledge of aluminum oxide (Al2O3) formation and characteristics
  • Basic concepts of anodization and its applications
NEXT STEPS
  • Research the anodization process of aluminum and its industrial applications
  • Learn about the electrolysis of different electrolytes and their reactions
  • Investigate the properties and uses of Aluminum Oxide (Al2O3) in various fields
  • Explore the effects of electrode materials on electrolysis outcomes
USEFUL FOR

This discussion is beneficial for chemists, materials scientists, and engineers involved in electrochemical processes, particularly those focusing on aluminum applications and anodization techniques.

gabede
Messages
16
Reaction score
0
I am running a dc current through a solution of Aluminum Hydroxide and I see a solid precipitating from the negative terminal, and bubbles coming from both terminals. Also, the positive terminal is corroding with little tiny holes in it. What is the solid being produced, and what is happening to the positive terminal. I know that the bubbles are hydrogen at the negative terminal, and oxygen at the positive terminal. I suspect that the solid is Aluminum Oxide, but I cannot find much proof through research.
 
Chemistry news on Phys.org
gabede said:
I am running a dc current through a solution of Aluminum Hydroxide and I see a solid precipitating from the negative terminal, and bubbles coming from both terminals. Also, the positive terminal is corroding with little tiny holes in it. What is the solid being produced, and what is happening to the positive terminal. I know that the bubbles are hydrogen at the negative terminal, and oxygen at the positive terminal. I suspect that the solid is Aluminum Oxide, but I cannot find much proof through research.

Do you use dissimilar electrode? What electrodes are you using?
Probably yes, its AlO2. Reaction could be this Al(OH)3→H+1/2O2+AlO2
 
Ronie Bayron said:
Do you use dissimilar electrode? What electrodes are you using?
Probably yes, its AlO2. Reaction could be this Al(OH)3→H+1/2O2+AlO2
Are you sure about that form for aluminum oxide? It's common, stable form is Al2O3.
 
  • Like
Likes   Reactions: Ronie Bayron
I used two aluminum electrodes.
 
Redbelly98 said:
Are you sure about that form for aluminum oxide? It's common, stable form is Al2O3.
Yes, my bad. That could also be the case. I think you are right about it.
It's called Anodization of aluminium (page 5 of 11)
 
Last edited by a moderator:
gabede said:
I used two aluminum electrodes.
Read through here: http://people.uleth.ca/~roussel/C1000/slides/12group13metals.pdf
 

Similar threads

  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 12 ·
Replies
12
Views
1K
Replies
9
Views
3K
Replies
5
Views
4K
  • · Replies 2 ·
Replies
2
Views
6K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
3
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 0 ·
Replies
0
Views
579
  • · Replies 1 ·
Replies
1
Views
4K