The process is called catalysis. The agent which increases the rate of the reaction is called a catalyst. It s as if it did not participate. Coal is primarily hydrocarbon, but also contains small amounts of sulfur. High grade coal contains very little sulfur.
Gasoline contains almost none.
Low grade coal, which is cheap and readily available in the US is very high in sulfur. O, SO 2 gases are then blown out the stack of the plant. O, SO 2 gases. The source of SO 2 pollution is primarily from the combustion of coal during the production of electricity. The primary source of CO and CO 2 pollution is from the combustion of gasoline in automobiles.