Isomerization and reformation are processes in which straight-chain alkanes are heated in the presence of a platinum catalyst.
ˌaɪsoʊmɹᵻzˈeɪʃən ænd ɹᵻfoːɹmˈeɪʃən ɑːɹ pɹˈɑːsɛsᵻz ɪnwˌɪtʃ stɹˈeɪttʃˈeɪn ˈælkeɪnz ɑːɹ hˈiːɾᵻd ɪnðə pɹˈɛzəns əvə plˈætɪnəm kˈæɾɐlˌɪst.