I'm trying to heat a 55mm x 55mm piece of aluminium to a minimum temperature of 250 Celsius (max is 300C) using LPG at a rate of 300Btu/hr. The issue I'm having is that because I'm using a flame the temperature across the entire surface isn't uniform. I've read about catalytic flame-less combustion of gases and after doing a little bit of research I came across the following products. Infrared Honeycomb and Catalytic Heaters First of all, are the materials being sold in the first link the same as the ones that are in the heaters in the second link? Is it more efficient to convert LPG to heat using a catalytic method rather than a flame based one? What is the starting procedure for these ceramic based materials? Is it as simple as starting the gas flow and then adding a spark or is it more complicated? Lastly, I'm curious to know about how long these ceramics can be used for before they start loosing efficiency and/or start breaking down from the heat.