Influence of acidity of modified chloroaluminate based ionic liquid catalysts on alkylation of iso-butene with butene-2

摘要

In the present work, aluminium chloride based ionic liquids (ILs) were used as catalysts for alkylation of iso-butane with butene-2. Some additives such as, transition metal salts, water and acidic cation exchange resins were used to improve the selectivity of the main products and the yield of reaction. A high content of the desired trimethylpentanes (TMPs) (up to 72.3%) and thus a high research octane number (RON up to 98) of the alkylate were received on using CuCI modified triethylamine hydrochloride aluminium chloride ([Et_3NH]CI/ A1Cl_3) (molar fraction of A1CI_3 is 0.6) at -5 °C over a period of 15 min.