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题名: Enhanced Trace Carbon Dioxide Capture on Heteroatom-Substituted RHO Zeolites under Humid Conditions
作者: Ke, Quanli1, 2;  Sun, Tianjun1;  Wei, Xiaoli1, 2;  Guo, Ya1, 2;  Wang, Shudong1
关键词: adsorption ;  boron ;  carbon capture ;  doping ;  zeolites
刊名: CHEMSUSCHEM
发表日期: 2017-11-09
DOI: 10.1002/cssc.201701162
卷: 10, 期:21, 页:4207-4214
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Boron and copper heteroatoms were successfully incorporated into the frameworks of high-silica RHO zeolite by adopting a bulky alkali-metal-crown ether (AMCE) complex as the template. These heteroatom-doped zeolites show both larger micropore surface areas and volumes than those of their aluminosilicate analogue. Proton-type RHO zeolites were then applied for the separation of CO2/CH4/N-2 mixtures, as these zeolites have weaker electric fields and, thus, lower heats of adsorption. The adsorption results showed that a balance between working capacity and adsorption heat could be achieved for these heteroatom-doped zeolites. Ideal adsorbed solution theory predictions indicate that these zeolites should have high selectivities even for remarkably dilute sources of CO2. Finally, the heteroatom-substituted zeolites, especially the boron-substituted one, could be thermally regenerated rapidly at 150 degrees C after full hydration and maintained high regenerability for up to 30 cycles; therefore, they are potential candidates for trace CO2 removal under humid conditions.
关键词[WOS]: UNIVALENT CATION FORMS ;  CO2 CAPTURE ;  18-CROWN-6 ETHER ;  ORGANIC TEMPLATE ;  LTA ZEOLITES ;  FLUE-GASES ;  ADSORPTION ;  SEPARATION ;  PERFORMANCE ;  ADSORBENT
语种: 英语
WOS记录号: WOS:000414810200012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149775
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China

Recommended Citation:
Ke, Quanli,Sun, Tianjun,Wei, Xiaoli,et al. Enhanced Trace Carbon Dioxide Capture on Heteroatom-Substituted RHO Zeolites under Humid Conditions[J]. CHEMSUSCHEM,2017,10(21):4207-4214.
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