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发明公开
CN1064499A 稀土Y分子筛裂化催化剂及其制备 失效 - 权利终止

稀土Y分子筛裂化催化剂及其制备
摘要：
一种含REY分子筛的烃类催化裂化催化剂，是以5～25重％的REY分子筛为活性组分，辅以75～95重％的无定形硅铝或含铝粘结剂的粘土而构成。该REY分子筛中稀土含量(以RE2O3计)为12～16重％，系由NaY分子筛经一次RE3+交换和一次100％流动水蒸汽中焙烧制成。与常规经二次RE3+交换和二次空气中焙烧制得的REY分子筛相比，本发明提供的REY分子筛制成的裂化催化剂具有与前者相当的活性稳定性和选择性以及较前者为高的水热结构稳定性、简化的制备流程、降低的稀土用量和生产成本。
摘要（英）：

The present catalyst comprises 5-25 wt% REY zeolite as active component and 75-95 wt% amorphous silica-alumina or aluminium binding agent contg. clay. The said REY zeolite has rare-earth content of 12-16 wt% (basis RE2O3) and is made from NaY through one-step RE3+ exchange and one-step calcination in 100% flowing steam. The catalytic cracking catalyst made from REY zeolite of the present invention has about the same activity stability and selectivity, higher hydrothermal stability of structure, simplified process scheme, reduced rare-earth usage and production cost as compared with traditional REY zeolite made through twice RE3+ exchange and twice calcination in air.

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