Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
Importance of hydrogen for low-temperature detemplation of high-silica MFI zeolite crystals | |
Lang, Lin1; Zhao, Shuheng1,2; Jiang, Junfei1,2; Yang, Wenshen1; Yin, Xiuli1 | |
2016-11-15 | |
发表期刊 | MICROPOROUS AND MESOPOROUS MATERIALS |
卷号 | 235页码:143-150 |
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. |
文章类型 | Article |
关键词 | Mfi Zeolites Template Removal Tetrapropylammonium (Tpa(+)) Low-temperature Hydrocracking Two-step Detemplation |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1016/j.micromeso.2016.07.044 |
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 |
项目资助者 | Natural Science Foundation of China(51202245 ; Guangdong Natural Science Foundation(S201301001489610 ; Youth Innovation Promotion Association, CAS ; 51106165) ; 251007006000000) |
WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000383937100015 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | 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 |
第一作者单位 | 中国科学院广州能源研究所 |
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. |
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