# Experiments with slurry of MTBE and Petroleum Coke, Sulphur

#### raj26

I am planning to perform some experiments with slurry of pet coke+ MTBE and sulphur+ MTBE.
I just want to know whether the solids(pet coke, sulphur) react with my solvent. Regarding this issue, I couldnt find reliable info on the net.

I dont want any form of chemical reaction between them.

My solution: Calcine the solids before making the slurry to remove any impurities present in the solids.

It would be nice to hear any better suggestions.

Thanks
Rajesh

#### Unknown008

CHF Hall of Fame
I don't think they will react. Ethers are quite inert and MTBE is basic. As none of C or S are acidic enough, I don't think they will react together.

#### raj26

Hi

Thanks for the response.

Even i felt so. Also from the MSDS sheet, it was told that MTBE is incompatible with oxidising agents. I was sure that coke is a reducing agent, but was not sure of sulphur.

I think calcination of solids will ensure further inertness.

#### Unknown008

CHF Hall of Fame
If you had the redox potentials for MTBE, that would confirm this.

Sulfur is not so reducing in acidic medium as the redox potential is negative.

$$\displaystyle S + 2H^+ + 2e <---> H_2 S (E/V = -0.13)$$

But relative to MTBE, we can't really compare...

#### raj26

I think the redox potential you have told demonstrates that sulphur is not getting reduced easily or in other words it is not a good oxidising agent. Hence it is safe to use sulphur in MTBE.