Reaction of an organic acid with aluminium phosphate

Click For Summary

Discussion Overview

The discussion centers on the reaction of organic acids, specifically carboxylic acids, with aluminium phosphate (AlPO_4), particularly under high-temperature conditions (700 degrees Celsius). The scope includes theoretical considerations of chemical reactions, potential products, and the behavior of the compounds involved.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Vivek inquires about the specific reaction between carboxylic acids and aluminium phosphate.
  • One participant suggests that carboxylic acids can complex with aluminium and alter the pH, leading to a complex solution involving Al3+ and phosphoric acid.
  • Vivek clarifies the inquiry to focus on the effects of heating carboxylic acids with aluminium phosphate at 700 degrees Celsius.
  • Another participant speculates that carboxylic acids would decompose at such high temperatures, leading to products of decomposition rather than the original acid.
  • A further contribution posits that CO2 may be released from the acid, potentially resulting in alkyl aluminum species and phosphates as products.
  • A later reply introduces the idea that a ketene intermediate may form during the reaction, as suggested by a teacher.

Areas of Agreement / Disagreement

Participants express varying viewpoints regarding the outcomes of heating carboxylic acids with aluminium phosphate, with no consensus reached on the specific products or mechanisms involved.

Contextual Notes

There are assumptions regarding the stability of carboxylic acids at high temperatures and the nature of the products formed, which remain unresolved. The discussion also reflects uncertainty about the specific reaction pathways and intermediates involved.

maverick280857
Messages
1,774
Reaction score
5
Hi

Does anyone know the reaction of an organic acid (carboxylic acid) with aluminium phosphate (AlPO_4)? If yes, please do let me know.

Thanks and cheers
Vivek
 
Chemistry news on Phys.org
Do you mean any specific reaction, or just acid/base/complexation equilbrium?

In the first case - I know nothing, but my lack of knowledge outperforms my knowdledge :)

In the second case - most carboxylic acids have some complexing ability and they are weak acids, so they will change pH of the solution and they will create some complexes with Al. That, together with the amphoteric Al characteristics, can create quite complex situation in the solution. Not that is simple at the start - Al3+ complexed by OH- and weak phosphoric acid... what a soup :)
 
Last edited by a moderator:
Hey Borek

Thanks for the reply. Well, yes I should've been more specific. What happens when you heat an organic (carboxylic) acid with aluminium phosphate at 700 degrees celsius?

Thanks and cheers
Vivek
 
I would say no carboxylic acid will survive such heating - regardless of the presence of aluminum phosphate. So basically I would expect you have to deal not with a carboxylic acid, but with the products of decomposition. But I am only guessing here.
 
Last edited by a moderator:
Yeah, at that temperature you will probably drive off CO2 from the acid and perhaps end up with alkyl aluminum species plus phosphates.
 
Actually it turns out that a ketene intermediate will be formed (according to my teacher).
 

Similar threads

Replies
4
Views
1K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 0 ·
Replies
0
Views
2K
Replies
4
Views
2K
  • · Replies 10 ·
Replies
10
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
5
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
16
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K