| 摘要 |
Composite catalyst which contains: - a zeolite of MFI structure containing at least one element chosen from the group consisting of the alkali and alkaline-earth metals and containing in its structural framework at least the elements silicon, aluminium and/or gallium, - a matrix, - at least one noble metal from the platinum group, at least one additional metal chosen from the group consisting of tin, germanium, indium, copper, iron, molybdenum, gallium, thallium, gold, silver, ruthenium, chromium, tungsten and lead, - at least one halogen chosen from the group consisting of fluorine, chlorine, bromine and iodine, - optionally at least one metal chosen from the group consisting of gallium and zinc, - and, optionally, preferably in the matrix, at least one element chosen from the group consisting of the alkali and alkaline-earth metals. The invention also relates to the use of this catalyst in the reactions of aromatisation of hydrocarbons containing from 5 to 12 carbon atoms per molecule. |
