dealumination

基本解释

A new method of static hydrothermal dealumination has been developed.
开发了一种静态水热脱铝的方法。
A series of ultrastable Y zeolites with varies Si/Al mol ratio prepared by different dealumination methods have been investigated.
研究了不同方法和不同程度脱铝对Y型沸石浸镧老化后的结构性质和催化裂化性能的影响。
It is found that the formation of secondary mesopore is closely related to the dealumination method and the mechanism of filling aluminium vacancies by silicon.
由于在脱铝过程中发生水解、聚合、重排等反应,分子筛的孔结构将发生很大的变化,如形成空穴,甚至可导致骨架结构单元的崩塌,形成二次孔。
For the four REUSY zeolites, the total extra-framework aluminums (N_(Al))_(EF) increase with the increase of depth of dealumination, the (N_(AI))_(EF) appeared as Al~(3+) are only observed in ~(27)Al MAS-NMR of REUSY-38 spectrum.
其次;稀土超稳Y沸石中总的非骨架铝(N_(Al))_EF;随脱铝深度的增加而增加;仅只在REUSY-38的~(27)Al MAS NMR谱中观察到Al~(a+)非骨架铝的存在.
In this paper,the influence of process-parameters of ion exchange,calcinations,dealumination and silicon reinsertion on the quality of PSRY was investigated from the view of Y zeolite structure.
文章从Y型沸石的结构入手,分析了离子交换、焙烧和脱铝补硅等操作参数对PSRY分子筛质量的影响,优化了工艺条件,有效地提高了产品质量。