Mg元素对RDSY分子筛微反活性的影响研究

Research on influence of Mg element on microactivity of RDSY molecular sieve

采用浸渍法、交换法、混合法、先沉淀法及后沉淀法向RDSY分子筛中引入Mg元素。结果表明,采用浸渍法、交换法、混合法及先沉淀法向RDSY分子筛中引入Mg元素后,分子筛的微反活性降低;而使用后沉淀法引入Mg元素后,分子筛微反活性呈现先增加后降低的趋势,当Mg元素含量在1.20%~1.64%之间微反活性出现最大值。

Impregnation method,exchange process,mixing method,the first-precipitation method and post-precipitation methodwere used to introduce magnesium element to RDSY molecular sieve.The result showed that,after using Impregnation method,exchange process,mixing method,the first-precipitation method to introduce magnesium element to RDSY molecular sieve,themicroactivity of the molecular sieve decreased,and microactivity of the molecular sieve appears the trend of decreasing at first andincreasing later,and the maximum value of microactivity emerges when the magnesium element content is between 1.24% and 1.64%.