| 摘要 |
Isomerization, alkylation and other hydrocarbon conversion processes are effected in the presence of RSbF6 on a particulate solid carrier (where R = hydrogen, alkyl or cycloalkyl). Preferably the feed contains C2-12 hydrocarbons e.g. n-pentane, n-hexane, methylpentanes, n-heptane, and methylhexanes, and is free from unsaturated compounds, benzene, water and sulphur. Examples described the preparation of C6H11SbF6 and its use to isomerize n-pentane to iso-pentane. Isobutene which remains unchange at the end of the reaction, may be used as an isomerization medium.ALSO:Compounds of formula RSbF6 are made by bringing HSbF6 into contact with a suitable hydrocarbon at room temperature. [R=alkyl or cycloalkyl]. Particularly suitable hydrocarbons are saturated cyclic hydrocarbons (naphthenes), e.g. cyclopentane, cyclohexane, and/or methylcyclohexane. Examples describe the preparation of methyl cyclopentenyl hexafluorantimonate.ALSO:HsbF6 on RSbF6 (where R = alkyl or cycloalkyl) is supported on a solid inert carrier e.g. metals, alloys, refractory oxides, salts on polymers. Specified carriers are Pt, Al, Pt-Au, Ni-Mo, Ni-W, Al-Mg, polyethylene, polytrifluorochloroethylene, P.T.F.E., copolymeric P.T.F.E. and hexafluoropropylene, SbF3 and AlF3 if desired coated on Al2O3, SiO2, SiO2-Al2O3, SiO2-MgO and combinations thereof with Cr2O3, BrO3 and ZrO2. Naturally occurring materials specified are bauxite, Kaolin and diatomaceous earth. The catalyst may have a surface area of 200 sq.m/gm. |
