Importance of hydrogen for low-temperature detemplation of high-silica MFI zeolite crystals
文献类型：期刊论文
| 作者 | Lang, Lin1 ; Zhao, Shuheng1,2; Jiang, Junfei1,2; Yang, Wenshen1; Yin, Xiuli1
|
| 刊名 | microporous and mesoporous materials
 |
| 出版日期 | 2016-11-15 |
| 卷号 | 235页码:143-150 |
| 关键词 | MFI zeolites Template removal Tetrapropylammonium (TPA(+)) Low-temperature hydrocracking Two-step detemplation |
| 英文摘要 | many attempts have been made for template removal from inorganic porous materials at mild temperature (below 350 degrees c), because high-temperature calcination is attributed as the trigger of the framework damages. in this study, a new two-step method, coupling by low-temperature hydrocracking and oxidation, is proposed for efficient removal of the organic templates in high-silica mfi zeolite crystals of different size at a mild temperature (300 degrees c). with this approach, unlike in conventional calcination above 400 degrees c, the pristine zeolite framework is preserved and no coke-like residues are formed, consistently verified by nmr, tga, and raman spectra. the reason for this phenomenon is proved as a special propyl-radical-mechanism in h-2 atmosphere, indicated by gc measurement and analysis online. this provides an alternative option for the low-temperature detemplation of high-silica microporous materials. (c) 2016 elsevier inc. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | template-removal ; thermal-decomposition ; microporous materials ; molecular-sieve ; single-crystals ; zsm-5 ; membranes ; tetrapropylammonium ; hydrocracking ; calcination |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000383937100015 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/11913]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lang, Lin,Zhao, Shuheng,Jiang, Junfei,et al. Importance of hydrogen for low-temperature detemplation of high-silica MFI zeolite crystals[J]. microporous and mesoporous materials,2016,235:143-150. |
| APA | Lang, Lin,Zhao, Shuheng,Jiang, Junfei,Yang, Wenshen,&Yin, Xiuli.(2016).Importance of hydrogen for low-temperature detemplation of high-silica MFI zeolite crystals.microporous and mesoporous materials,235,143-150. |
| MLA | Lang, Lin,et al."Importance of hydrogen for low-temperature detemplation of high-silica MFI zeolite crystals".microporous and mesoporous materials 235(2016):143-150. |
入库方式： OAI收割
来源：广州能源研究所
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