Phase selection controlled by sodium ions in the synthesis of FAU/LTA composite zeolite
文献类型：期刊论文
| 作者 | Hu, Linyan1,2; Xie, Sujuan1; Wang, Qingxia1; Liu, Shenglin1; Xu, Longya1 |
| 刊名 | science and technology of advanced materials
 |
| 出版日期 | 2009-03-01 |
| 卷号 | 10期号:1 |
| 关键词 | FAU LTA Composite zeolite crystallization sodium concentration |
| 英文摘要 | zeolite faujasite (fau), linde type a (lta) and fau) lta composite have been synthesized using tetramethylammonium cation (tma(+)) as template, by adjusting only the concentration of na+ ions in the initial solution (1.00 al2o3 4.36 sio2 : 2.39 (tma)(2)o : beta na2o : 249.00h(2)o). na+ ions alter the phase composition of the product more than tma(+) or oh- ions. when na2o concentration [na2o] increases from 0.024 to 0.168, the product gradually changes from pure fau to pure lta via the formation of fau/lta composite with increasing lta fraction. interestingly, the induction periods of fau and lta in the fau/lta composite zeolite ([na2o] is 0.072) are both 13 h, quite different from the induction periods of their individual pure phases-45 h for fau and 4 h for lta. during the crystallization, the lta/(fau+lta) fraction in the composite zeolite decreases in a nearly linear fashion. scanning electron microscopy, thermogravimetry and differential thermal analysis indicate some difference between the properties of the fau/lta composite zeolite and of the mechanical mixture. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | materials science, multidisciplinary |
| 研究领域[WOS] | materials science |
| 关键词[WOS] | catalytic performance ; zsm-5/y composite ; y nanocrystals ; nmr-spectra ; fau ; lta ; thermochemistry |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000268313400017 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141348]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Linyan,Xie, Sujuan,Wang, Qingxia,et al. Phase selection controlled by sodium ions in the synthesis of FAU/LTA composite zeolite[J]. science and technology of advanced materials,2009,10(1). |
| APA | Hu, Linyan,Xie, Sujuan,Wang, Qingxia,Liu, Shenglin,&Xu, Longya.(2009).Phase selection controlled by sodium ions in the synthesis of FAU/LTA composite zeolite.science and technology of advanced materials,10(1). |
| MLA | Hu, Linyan,et al."Phase selection controlled by sodium ions in the synthesis of FAU/LTA composite zeolite".science and technology of advanced materials 10.1(2009). |
入库方式： OAI收割
来源：大连化学物理研究所
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