| 摘要 |
FIELD: petrochemical process catalysts. ^ SUBSTANCE: invention relates to chemistry of heterogeneous catalysts and is directed to production of high-octane gasoline component via alkylation of isobutane with butane-butylene fraction on heterogeneous catalysts. Solid catalyst represents porous superacid based on zirconium and/or hafnium metallosilicates promoted with salts of double- or triple-charged metal cations with double-charged anions and depicted by general formula (EO2.aSiO2).b(McXd) wherein E = Zr and/or Hf, a=17-34; b=0.5 when c=1 and d=1, M= Ni2+, Zn2+, or ZrO2+, X=SO4 2- or ZrF6 2-; or b=0.1666 when c=2 and d=3, M=Sc3+, Y3+, or Ga3+ and X= SO4 2-, parameter "a" being allowed to deviate from indicated value to larger or lesser side by 20% and parameter "b" by 5%. High-octane gasoline component is produced as indicated above at temperature 348 to 375 K, pressure 1.7 to 2.5 MPa, isobutane-to-butenes molar ratio 10-15, and volume feed supply velocity between 6.4 and 8.5 g/mL catalyst/h. Catalyst can optionally be regenerated. ^ EFFECT: enhanced conversion, yield of alkylate, productivity, and prolonged catalyst lifetime. ^ 7 cl, 4 tbl, 11 ex |
