# Products of silicate synthesis

I'm attempting to make a hard refractory cement to apply over kiln brick made of sodium silicate and Perlite. This creates a very good kiln brick, however they are susceptible to abrasion. I've been making my own sodium silicate, and thought I might be able to make it harder with the addition of some oxides.

I added silica gel and water; then I added magnesium oxide and sodium hydroxide. There was a extremely strong exothermic reaction.

What would this be called? I imagine it's called something like $$\ce{Na2SiO4Mg}$$. Tomorrow I will try some combinations of sodium silicate with Aluminum Oxide, and magnesium oxide. What would these be called?

If you have a recipe for a hard refractory cement to protect the Perlite mix from abrasion I would appreciate the input.

I imagine it's called something like $$\ce{Na2SiO4Mg}$$. Tomorrow I will try some combinations of sodium silicate with Aluminum Oxide, and magnesium oxide. What would these be called?
$$\ce{NaOH (s) -> NaOH (aq)}\qquad{\mathrm{\Delta} H = \pu{-44.5 kJ mol-1}}$$