The catalytic effect is effective on most all hydro carbons and alcohols. While it is different from one fuel to another, it is probably not as important as the auto ignition temperature. This is the temperature where a mixture of air and fuel will ignite, or the temperature a glow plug or spark plug will have to heat fuel in its immediate area. Take Methanol which is 464 degrees Centigrade (C), and nitro which has an auto ignition temperature of 417 C. You can run pure nitro if you have a cold plug, this is because of both the lower ignition temperature and its tendency to detonate. Compare that to gasoline which will not run in our present glow engines which will ignite at 250 C, this is why using gas in glow will detonate, run hot, and kick back, also the reason a small amount of gas helps winter operation. Ethanol has an auto ignition temperature of 363 degrees C. Since the octane rating is similar to methanol I suspect it is usable with a colder plug. However, It won't have as much power, and will cost more than methanol.