What is the reactivity index?

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Dr Murugesan Muthu

Reactivity Index Scale for Interaction of Heteroatomic Molecules with Zeolite Framework

J. Phys. Chem. A 1999, 103, 2489-2494

Armin Rajabi

Dear Dr Muthu. thank for your respond.

Actually, reactivity index was used in one of the articles for carbothermal reaction titled, Carbothermal synthesis of titanium nitride, Part I Influence of starting materials.

(JOURNAL OF MATERIALS SCIENCE 27 (1992) 4287-4293).

So, I want to know, how the index measured in this article.