| 摘要 |
Use, in the aromatisation of a light petroleum fraction (cut) comprising hydrocarbons in which the number of carbon atoms per molecule is between 5 and 7, of a catalyst containing by weight: 1. 0.01 to 10% of gallium, 2. 0.1 to 99.49% of a matrix chosen from the group formed by alumina, silica, magnesia, a clay or any combination of at least two of the abovementioned compounds, 3. 0.5 to 99.89% of a zeolite MFI, synthesised in fluoride medium in the absence of organic compounds, with generally the following approximate general formula: M<+)<x+y)(Si(96-(x+y))AlxGayO192)<(x+y)->, where M represents an element chosen from the group formed by the alkali metal cations, NH4<+> and H<+>, x is a number between 0 and 13.7, y is a number between 0 and 13.7, (x + y) is a number between 0.19 and 13.7, the said zeolite having a fluorine content between 0.01 and 2% by weight and the said zeolite being characterised by an X-ray diffraction diagram in accordance with Table 1 of the description. |
