best catalyst for tire pyrolysis

[holdensteady]

I'm planning to conduct experiments in tire pyrolysis to produce small particle carbon for use in other projects. I'd like to hear ideas for the best, cost-effective catalysts to use in the experiments. The plan calls for using various, phased pressure and heat levels. Thanks in advance!

[Enthalpy]

Welcome, holdensteady!

 

The cheapest way is to burn the tyres. The thick black smoke is carbon in small particles. Partly because tyres are produced with a load of carbon black, and partly because the combustion makes soot.

 

You know that carbon black is widely available and cheap?

[Enthalpy]

Meanwhile a giant deposit for used tyres has burnt in Spain. It made smoke.