| 摘要 |
Zeolite L in the form of cylindrical crystallites having an aspect ratio of at least 0.5 and a silica/alumina ratio of greater than 6.5, which may be used in catalysis, particularly for aromatisation, is prepared in a synthesis modified by the addition of small amounts of additional metal such as magnesium, calcium, barium, cobalt, zinc, chromium, manganese or nickel. |
