预交换流程对Y型分子筛改性过程的影响

Pre-exchange Processes on the Composition and Nature of NaY Zeolite

提出Y型分子筛交换水洗的新流程,并对采用此新流程前后的分子筛组成及性质进行分析和探讨。结果表明采用预交换流程后Y型分子筛中的Na^+、SO_4^(2-)含量明显降低,稀土利用率、一次焙烧结晶度以及成品分子筛的孔体积、比表面明显升高。

Propose the Y zeolite exchanged washing process,analyze and discuss the composition and properties of zeolite before and after this new process.The results showed that the content of Na^+ and SO4^2- in the Y zeolite obvious decreased after using the pre-exchange process,the utilization of rare earth、once roasting degree of crystallinity and the finished molecular sieve pore volume,surface area significantly increased.