Abstract: The alkylation of isobutane/2-butene in ionic liquids with AlCl^-₄ and/or Al₂Cl^-₇ anions have high activity but poor selectivity.Changing the cation or anion of ionic liquids themselves has little impact on the catalytic performance. Addition of certain metal chlorides in chloroaluminate ionic liquids makes the alkylation catalyst much more active and selective than present ionic liquids catalysts.Side reactions such as isomerization, disproportionation, hydrogen transfer, and cracking could be dramatically reduced.The ［Et₃NH］Cl-1.8AlCl₃ ionic liquid with CuCl inhibitor is comparable to sulfuric acid in catalytic activity.C8 isoparaffins fraction of inhibited ionic liquids alkylate could reach 95.8% and the ratio of trimethylpentanes (TMPs) to dimethylhexanes (DMHs) was more than 14.0.

摘要： 含有AlCl^-₄和/或Al₂Cl^-₇阴离子的氯铝酸离子液体对异丁烷/2-丁烯烷基化反应具有很强的催化活性，但反应的选择性较差. 改变离子液体本身的阴、阳离子种类不能提高反应的选择性.在氯铝酸离子液体中引入CuCl等金属氯化物，能够有效地抑制烷基化过程中多聚、异构、歧化、氢转移、裂解等副反应的发生，大幅提高烷基化油中三甲基戊烷等高辛烷值组分含量. 相同反应条件下，CuCl+［Et₃NH］Cl-1.8AlCl₃烷基化反应中高辛烷值产物的含量远高于H₂SO₄烷基化油中相应组分含量.