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Preparation method for modified molecular sieve and modified molecular sieve-containing catalytic cracking catalyst

机译：改性分子筛和改性分子筛催化裂化催化剂的制备方法

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摘要

A preparation method for modified molecular sieve and a modified molecular sieve-containing catalytic cracking catalyst. The preparation method comprises: mixing molecular sieve slurry, a compound solution containing ions of group IIIB metals of the periodic table of elements, organic complexing agent and/or dispersing agent and precipitating agent to obtain mixed slurry containing molecular sieve and precipitates of group IIIB elements in the periodic table of elements; and drying, and roasting or not roasting to obtain molecular sieve modified by the group IIIB elements. A weight ratio of group IIIB elements calculated based on oxides to molecular sieve dry basis is equal to (0.3-10):100, a molar ratio of organic complexing agent to ions of group IIIB metals is equal to (0.3-10):1, and a molar ratio of dispersing agent to the ions of group IIIB metals is equal to (0.2-16):1. Also related to is the catalytic cracking catalyst containing the modified molecular sieve prepared according to the method. The molecular sieve prepared by the method or the catalytic cracking catalyst containing same has good activity stability and heavy metal pollution resistance.
机译：一种改性分子筛的制备方法和改性分子筛的催化裂化催化剂。制备方法包括：混合分子筛浆料，含有元素，有机络合剂和/或分散剂和沉淀剂的周期性表的IIIB金属离子的化合物溶液，得到含有混合浆料的分子筛和IIIB组元素的沉淀物在周期性的元素表中;和干燥，烘焙或不烘烤以获得由IIIB元素改性的分子筛。基于氧化物计算的IIIB元素的重量比等于（0.3-10）：100，有机络合剂与IIIB金属离子的摩尔比等于（0.3-10）：1 ，分散剂与IIIB金属离子的摩尔比等于（0.2-16）：1。也与含有根据该方法制备的改性分子筛的催化裂化催化剂。通过该方法或催化裂化催化剂制备的分子筛具有相同的良好活性稳定性和重金属污染抗性。

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