Re: Quantitative Analysis of CaO in the mixture


Gregg wrote:

> An easy way to estimate CaO, CaCO3 and CaTiO3 would be to :
> 1. Disperse the powder in water and sparge CO2 into the slurry and stir
> for several hours or overnight- dry the slurry then heat the powder to a
> temperature well below the decomposition temperature of CaCO3, but high
> enough to remove hydrated water (remember TiO2 will facilitate
> decomposition to CaO or some calcium titanate phase) - measure the
> weight gain..
> The CaO will carbonate and gain weight.
>
> 2. Calcine the powder at 1000 C and measure the weight loss - all the
> CaCO3 will convert to CaO
>
> The remainder will be CaTiO3 (provided that the stoichiometry of your
> starting CaTiO3 was 1:1)
>
> If you have a large high alumina crucible - you can carbonate directly
> in the crucible and avoid transferring the slurry back and forth from a
> beaker.
>
> I would recommend using a high alumina crucible that will not react with
> the CaO. It will be a lot easier to clean and reuse than porcelain.
>
> Good luck,
> Gregg

Brilliant. Now here's someone who's thinking, and applying knowledge
they had in a practical manner to the question at hand. This group my
not be dead yet.

Yeah spammers, I'm talking to you. Can you do something like this?
You with the ascii art and you with the Angelina Jolie vs. Einstein
gibberish. You think you're in the same league as Gregg?

.