“…[7][8][9][10][11][12] For example, McVicker et al 12 studied the selective rupture of naphthenic rings (methylcyclopentane (MCP), methylcyclohexane (MCH), 1,1-, 1,2-and 1,3-dimethylcyclopentane (1,1-DMCP, 1,2-DMCP and 1,3-DMCP), pentylcyclopentane (PCP) and ethylcyclopentane (ECP)) on Pt/SiO 2 , Pt/Al 2 O 3 , Ni/Al 2 O 3 , Ru/Al 2 O 3 , Rh/Al 2 O 3 and Ir/Al 2 O 3 . Among the mentioned catalysts, Ir/Al 2 O 3 presented the best activity and selectivity for cleavage of non-substituted C-C in five-membered naphthenic rings as MCH and PCP.…”