Reaction network of the H₂SO₄-catalysed alkylation of isobutane. where DMC₄: dimethylbutanes; MC₅: methylpentanes; DMC₅: dimethylpentanes; TMC₅: trimethylpentanes; MC₆: methylhexanes; DMC₅: dimethylhexanes; I_7(8,9,10,11): isomers of hydrocarbons C_7(8,9,10,11); i-C₄⁺: isobutyl cations; i-C₁₂⁺: isododecyl cations; MC₆⁺: methylhexanes (cations); TMC₅⁺: trimethylpentanes cations; i-C₄=: isobutene; 1-C₄H₈: butene-1; 2-C₄H₈: butenes-2; i-C₄H₁₀: isobutanes; i-C₅H₁₂: isopentanes; i-C₄: isobutanes; n-C₄: butanes; i-C₅H₁₂: isopentanes. The pseudocomponent “polymers” refers to the high molecular weight products of alkene polymerisation, as well as all undesired high molecular weight compounds formed during the alkylation process.