| 摘要 |
Zeolite-containing catalysts useful for fluid cracking of hydrocarbons are prepared by forming and drying an aqueous slurry of zeolite and aluminum chlorhydrol to obtain particulate composites that contain in excess of about 1 percent by weight alkali metal oxide. The particulate composites are calcined and subsequently ion exchanged to obtain hard, attrition-resistant catalyst particles which have an alkali metal oxide content of less than 1 percent by weight. |
