Desilication by Alkaline Treatment and Increasing the Silica to Alumina Ratio of Zeolite Y
Desilication by Alkaline Treatment and Increasing the Silica to Alumina Ratio of Zeolite Y
复制标题
碱处理脱硅提高Y沸石硅铝比
DOI：
10.1016/s1872-2067(10)60290-2
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发表时间：
2012
影响因子：
16.5
通讯作者：
Liu Honghai
中科院分区：
文献类型：
--
作者：
Shen Wen;Wang Baojie;Zhao Hongjuan;Liu Honghai
比较了NaY分子筛“汽蒸法”和“碱处理-汽蒸法”制备的超稳Y分子筛的骨架硅铝比、孔隙率和酸性。研究了碱处理与水蒸汽处理相结合的方法对NaY型沸石原料的适应性。与单一汽蒸处理相比，连续碱处理和汽蒸的组合可使产物的中孔体积明显增加。最终产物的骨架超稳定化水平和酸度不受影响。仅通过蒸汽脱铝制备的超稳Y沸石的中孔体积不超过0.14cm3/g。通过顺序脱硅和脱铝制备的最终产物的中孔体积为0.22cm3/g。 该法适用于制备骨架硅铝比高的 NaY 分子筛.当使用具有相对低的硅铝比（SiO2/Al 2 O3 = 4.8，通过核磁共振测定）的NaY沸石作为脱硅和脱铝的组合处理的起始材料时，中孔体积的少量增加和严重的微孔损伤是明显的。
The framework silica to alumina ratio, the porosity, and the acidity properties of ultrastable Y zeolites prepared by ‘steaming’ and by the ‘sequential alkaline treatment and steaming’ of NaY zeolites are compared. The adaptability of the combined alkaline treatment method and steaming toward the type of starting NaY zeolites was studied. By comparison with single steaming treatment the combination of sequential alkaline treatment and steaming affords products with an obviously increased mesopore volume. The level of framework ultrastabilization and acidity of the final products were not affected. The mesopore volume of the ultrastable Y zeolite prepared by steaming dealumination only was no more than 0.14 cm3/g. The mesopore volume of the final product prepared by sequential desilication and dealumination was 0.22 cm3/g. The sequential desilication and dealumination method is suitable for the NaY zeolite with a high framework silica to alumina ratio. A small increase in the mesopore volume and severe micropore damage were evident when the NaY zeolite with a relatively low silica to alumina ratio (SiO2/Al2O3= 4.8, determined by nuclear magnetic resonance) was used as the starting material for the combined desilication and dealumination treatment.
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影响因子：
10.9
作者：
Dong, ST;Li, XW;Kang, XH
通讯作者：
Kang, XH
DOI：
10.1016/s0167-2991(08)64601-7
发表时间：
1991
期刊：
Studies in Surface Science and Catalysis
影响因子：
--
作者：
D. Goyvaerts;J. Martens;P. Grobet;P. A. Jacobs
通讯作者：
D. Goyvaerts;J. Martens;P. Grobet;P. A. Jacobs
影响因子：
--
作者：
D. Park;Seong-Su Kim;Hui Wang;T. Pinnavaia;M. Papapetrou;A. Lappas;K. Triantafyllidis
通讯作者：
D. Park;Seong-Su Kim;Hui Wang;T. Pinnavaia;M. Papapetrou;A. Lappas;K. Triantafyllidis
影响因子：
2.8
作者：
J. Datka;Waclaw Kolidziejski;J. Klinowski;B. Sulikowski
通讯作者：
J. Datka;Waclaw Kolidziejski;J. Klinowski;B. Sulikowski
影响因子：
--
作者：
R. Mao;Shuyong Xiao;A. Ramsaran;Jianhua Yao
通讯作者：
R. Mao;Shuyong Xiao;A. Ramsaran;Jianhua Yao