NOVELTY - Hydrocarbon conversion process involves disproportionating a hydrocarbon feed (105) comprising 5C alkanes by contacting the hydrocarbon feed with a liquid catalyst under disproportionation conditions to form a product mixture comprising 5 wt.% or more 4C alkanes, and 5 wt.% or more 6C alkanes. The liquid catalyst comprises an unsupported ionic liquid containing an organic cation (I), and a carbocation promoter chosen from e.g. 2-chloro-2-methylpropane, and 3-chloro-3-methylpentane. The mass ratio of the liquid catalyst with respect to the hydrocarbon feed is less than 0.75:1.    USE - Hydrocarbon conversion process (claimed).    ADVANTAGE - The method enables efficient conversion of hydrocarbon at a faster rate.    DETAILED DESCRIPTION - Hydrocarbon conversion process involves disproportionating a hydrocarbon feed comprising 5C alkanes by contacting the hydrocarbon feed with a liquid catalyst in a reactor (115) under disproportionation conditions to form a product mixture comprising 5 wt.% or more 4C alkanes, and 5 wt.% or more 6C alkanes in 30 minutes based on 5C alkanes in the hydrocarbon feed. The liquid catalyst comprises an unsupported ionic liquid and a carbocation promoter. The mass ratio of the liquid catalyst with respect to the hydrocarbon feed is less than 0.75:1. The ionic liquid comprises an organic cation is of formula (I). The carbocation promoter comprises 2-chloro-2-methylpropane, 2-chloropropane, 2-chlorobutane, 2-chloro-2-methylbutane, 2-chloropentane, 1-chlorohexane and/or 3-chloro-3-methylpentane. The ionic liquid comprises an anion chosen from tetrachloroaluminate, tetrabromoaluminate, heptachlorodialuminate, aluminum chloride ion (Al3Cl10)-, aluminum-chlorine-bromine complex ion (AlCl3Br)-, aluminum-chlorine-bromine complex ion (Al2Cl6Br)-, aluminum-chlorine-bromine complex ion (Al3Cl9Br)-, aluminum bromide ion (Al2Br7)-, aluminum bromide ion (Al3Br10)-, tetrahedral gallium chloride ion (GaCl4)-, heptachlorodigallate (Ga2Cl7)-, gallium chloride ion (Ga3Cl10)-, gallium-chlorine-bromine complex ion (GaCl3Br)-, gallium-chlorine-bromine complex ion (Ga2Cl6Br)-, gallium-chlorine-bromine complex ion (Ga3Cl9Br)-, copper(II) chloride ion (CuCl2)-, copper chloride ion (Cu2Cl3)-, copper chloride ion (Cu3Cl4)-, zinc chloride ion (ZnCl3)-, iron(III)chloride ion (FeCl3)-, iron tetrachlorate, iron chloride ion (Fe3Cl7)-, hexafluorophosphate (PF6)-, and tetrafluoroborate.    R1-R4=1-20C hydrocarbyl or its derivatives, halo, or H.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating the hydrocarbon conversion process.    Hydrocarbon feed (105)    Drying bed (110)    Reactor (115)    Settler (125)    Stirrer (160)