| Influence of synthesis parameters on the crystallinity and Si/Al ratio of NaY zeolite synthesized from kaolin | |
| Li Qiang1,2; Zhang Ying1,3; Cao Zhijun1; Gao Wei1; Cui Lishan1,3; Zhang, Y | |
| 2010-09-01 | |
| Source Publication | PETROLEUM SCIENCE
 |
| ISSN | 1672-5107 |
| Volume | 7Issue:3Pages:403-409 |
| Abstract | Well-crystallized high-silica NaY zeolites (Si/Al>2.5) were prepared from a reaction mixture consisting of metakaolin, sodium silicate solution and seed solution via optimization of the mixture composition and reaction conditions The transformation from kaolin to high-silica NaY zeolite was confirmed by XRD, SEM and IR techniques Subsequently, the influence of synthesis parameters, i.e initial SiO(2)/Al(2)O(3), initial Na(2)O/SiO(2), initial H(2)O/SiO(2), aging time of the seed solution, crystallization temperature and crystallization time, on the NaY growth was investigated in terms of crystallinity and Si/Al ratio The results showed that the effects of initial SiO(2)/Al(2)O(3), initial Na(2)O/SiO(2) and initial H(2)O//SiO(2), on the crystallinity and Si/Al ratio of NaY zeolite are similar to those observed in the conventional syntheses of NaY zeolites only using sodium silicate solution as silicon source. However, due to the use of metakaolin as the main silicon and aluminum sources in the present study, a long crystallization induction period of 20 h was achieved, which can be attributed to the dissolution of metakaolin In addition, different from the conventional syntheses of zeolite NaY, pure NaY zeolites (i.e without NaP zeolite impurity) were still obtained even at 120 degrees C because of the use of a large quantity of seed solution (23 wt%) in the reaction mixture As the aging time of the seed solution increased from 3.5 h to 22 h, the relative crystallinity of the NaY zeolite first increased sharply and then reached a plateau, while the Si/Al ratio first increased rapidly up to a maximum value of 2.75 corresponding to an aging time of 6 5 h, and then decreased sharply with the aging time. |
| Keyword | Kaolin Nay Zeolite High-silica Seed Solution Aging Time Crystallinity |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1007/s12182-010-0085-x |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Petroleum |
| WOS ID | WOS:000280434900015 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/5722 |
| Collection | 多相复杂系统国家重点实验室 |
| Corresponding Author | Zhang, Y |
| Affiliation | 1.China Univ Petr, Dept Mat Sci & Technol, Beijing 102249, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.China Univ Petr, Microstruct Lab Energy Mat, Beijing 102249, Peoples R China |
| Recommended Citation GB/T 7714 | Li Qiang,Zhang Ying,Cao Zhijun,et al. Influence of synthesis parameters on the crystallinity and Si/Al ratio of NaY zeolite synthesized from kaolin[J]. PETROLEUM SCIENCE,2010,7(3):403-409. |
| APA | Li Qiang,Zhang Ying,Cao Zhijun,Gao Wei,Cui Lishan,&Zhang, Y.(2010).Influence of synthesis parameters on the crystallinity and Si/Al ratio of NaY zeolite synthesized from kaolin.PETROLEUM SCIENCE,7(3),403-409. |
| MLA | Li Qiang,et al."Influence of synthesis parameters on the crystallinity and Si/Al ratio of NaY zeolite synthesized from kaolin".PETROLEUM SCIENCE 7.3(2010):403-409. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 20131113-1164-复件 art（370KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment