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A series of triethylammonium-based chlorogallate(Ⅲ) ionic liquids with varied Lewis acidity was synthesized, characterized, and firstly applied to isobutane alkylation. The [Et3NHCl]-GaCl3 with χGaCl3 = 0.65 displayed a potential catalytic activity for the alkylation. The addition of copper halide into the chlorogallate(Ⅲ) ionic liquids dramatically enhanced the alkylation reaction. Up to 70.1% C8 selectivity and 91.3 RON were achieved with the [Et3NHCl]-GaCl3-CuCl (χGaCl3 = 0.65, CuCl = 5% mol) under 0.5 MPa, 900 r/min, 15 min, 288 K using the industrial C4 cut (isobutane/butene = 10). These results indicate that the chlorogallate(Ⅲ) system may be used as a promising catalyst for the C4 alkylation.
A series of triethylammonium-based chlorogallate (III) ionic liquids with varied Lewis acidity was synthesized, characterized, and first applied to isobutane alkylation. The [Et3NHCl] -GaCl3 with χGaCl3 = 0.65 displayed a potential catalytic activity for the alkylation. The addition of Up to 70.1% C8 selectivity and 91.3 RON were achieved with the [Et3NHCl] -GaCl3-CuCl (χGaCl3 = 0.65, CuCl = 5% mol) under 0.5 MPa , 900 r / min, 15 min, 288 K using the industrial C4 cut (isobutane / butene = 10). These results indicate that the chlorogallate (III) system may be used as a promising catalyst for the C4 alkylation.