Ideally I would like the reaction to get to between 100-150°C for at least 30 min and I am willing to
consider any reaction that can do this safely.
Any help would be appreciated
OK, remember you said "any help appreciated." This sort of question comes up a bit, and there's a problem already. You're looking for an exothermic, non-combustion reaction, that reaches the temperature of boiling water, plus 50 C higher. So it can't be an aqueous reaction, catalyst or no. Obviously, you could use some sort of pressure vessel to contain the boiling water, but still, you have to realize you're asking for a lot.
You can try to compute the enthalpy of the reaction in question, and determine what mass will be needed to generate the heat you need. But I suspect you'll never exceed the energy output of a combustion reaction.