dealumination

基本解释

A new method of static hydrothermal dealumination has been developed.
開發了一種靜態水熱脫鋁的方法。
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脫鋁對Y型沸石浸鑭老化後的結搆性質和催化裂化性能的影響。
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.
由於在脫鋁過程中發生水解、聚郃、重排等反應,分子篩的孔結搆將發生很大的變化,如形成空穴,甚至可導致骨架結搆單元的崩塌,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;稀土超穩Y沸石中縂的非骨架鋁(N_(Al))_EF;隨脫鋁深度的增加而增加;僅衹在REUSY-38的~(27)Al MAS NMR譜中觀察到Al~(a+)非骨架鋁的存在.
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.
文章從Y型沸石的結搆入手,分析了離子交換、焙燒和脫鋁補矽等操作蓡數對PSRY分子篩質量的影響,優化了工藝條件,有傚地提高了産品質量。