Butane isomerization is the process of converting normal butane into isobutane. Normal butane and isobutane are NGLs that are naturally produced from processing natural gas and as a byproduct from crude oil refining. The supply of normal butane generally exceeds demand, while the demand for isobutane is normally greater than the supply. The reaction mechanism for butane isomerization using platinum impregnated chlorinated alumina has three steps: removal of hydrogen from the butane, rearrangement of the molecule, and replacement of hydrogen.