Structural investigation of interlayer-expanded zeolite by hyperpolarized Xe-129 and H-1 NMR spectroscopy
文献类型：期刊论文
| 作者 | Zhao, Zhenchao2,3; Li, Xin1; Li, Shihan2; Xu, Shutao3; Bao, Xinhe3; Bilge, Yilmaz4; Andrei-Nicolae, Parvulescu4; Ulrich, Muller4; Zhang, Weiping2 |
| 刊名 | MICROPOROUS AND MESOPOROUS MATERIALS
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 288页码:6 |
| ISSN号 | 1387-1811 |
| 关键词 | Layered zeolite Interlayer expanding Pore structure Xe-129 NmR Silanol group |
| DOI | 10.1016/j.micromeso.2019.06.017 |
| 通讯作者 | Xu, Shutao(xushutao@dicp.ac.cn) ; Zhang, Weiping(wpzhang@dlut.edu.cn) |
| 英文摘要 | The interlayer expanded zeolite COE-4 was synthesized using silylation agents such as dichlorodimethylsilane (DCDMS) as layer linlcer from layered silicate RUB-36 precursor. Solid-state NMR techniques combined with theoretical calculations have proven to be a useful characterization method to investigate the structure and porosity of the interlayer expanded zeolites. XRD and Si-29 MAS NMR results show that after calcination the layer spacing of COE-4 is enlarged by 2.6 angstrom compared with that of RUB-37, indicating that pore windows between the layers are enlarged from 8-membered ring (8-MR) pores to 10-MR pores due to the formation of Si(OH)(2) pillar between adjacent layers. Hyperpolarized (HP) Xe-129 NMR results indicate that after interlayer expansion, Xe atoms can be adsorbed in the 10-MR channels of COE-4, and the 10-IVIR channels are homogeneously distributed like ZSM-5. For COE-4, Xe has a stronger interaction with the channel walls containing dual silanol groups. H-1 MAS NMR combined with theoretical calculations malce a clear assignment of dual silanol groups at 3.3 ppm, and the concentration of dual silanols is 2.2 mmol/g, which is 1-2 orders of magnitude larger than the concentration of the other two types of existing isolated and hydrogen-bonded silanol groups. After introduction of pyridine-d(5), one Si-OH from the dual silanol groups has a weak hydrogen bond interaction with pyridine molecule, and the adsorbed pyridine molecule may experience chemical exchange with the other Si-OH of the dual silanol group and therefore H-1 NMR signal of dual silanol groups shows a weak broad peak at 5.7 ppm after pyridine adsorption. |
| WOS关键词 | SOLID-STATE NMR ; 2-DIMENSIONAL ZEOLITES ; SILICATE RUB-36 ; EXPANSION ; XENON ; PRECURSORS ; CATALYSTS ; NANOCHANNELS ; ADSORPTION ; INSIGHTS |
| 资助项目 | National Natural Science Foundation of China[21603022] ; National Natural Science Foundation of China[21872017] ; National Natural Science Foundation of China[91545104] ; LiaoNing Revitalization Talents Program[XLYC1807227] ; Fundamental Research Funds for the Central Universities in China[DUT16RC (3) 002] ; Fundamental Research Funds for the Central Universities in China[DUT17TD04] ; Supercomputing Center of Dalian University of Technology |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000482515600025 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program ; LiaoNing Revitalization Talents Program ; Fundamental Research Funds for the Central Universities in China ; Fundamental Research Funds for the Central Universities in China ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program ; LiaoNing Revitalization Talents Program ; Fundamental Research Funds for the Central Universities in China ; Fundamental Research Funds for the Central Universities in China ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program ; LiaoNing Revitalization Talents Program ; Fundamental Research Funds for the Central Universities in China ; Fundamental Research Funds for the Central Universities in China ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program ; LiaoNing Revitalization Talents Program ; Fundamental Research Funds for the Central Universities in China ; Fundamental Research Funds for the Central Universities in China ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/172920]  |
| 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 |
| 通讯作者 | Xu, Shutao; Zhang, Weiping |
| 作者单位 | 1.Henan Univ Technol, Coll Chem & Chem Engn, Zhengshou 450001, Peoples R China 2.Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China 4.BASF SE, Proc Res & Chem Engn, D-67056 Ludwigshafen, Germany |
| 推荐引用方式 GB/T 7714 | Zhao, Zhenchao,Li, Xin,Li, Shihan,et al. Structural investigation of interlayer-expanded zeolite by hyperpolarized Xe-129 and H-1 NMR spectroscopy[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2019,288:6. |
| APA | Zhao, Zhenchao.,Li, Xin.,Li, Shihan.,Xu, Shutao.,Bao, Xinhe.,...&Zhang, Weiping.(2019).Structural investigation of interlayer-expanded zeolite by hyperpolarized Xe-129 and H-1 NMR spectroscopy.MICROPOROUS AND MESOPOROUS MATERIALS,288,6. |
| MLA | Zhao, Zhenchao,et al."Structural investigation of interlayer-expanded zeolite by hyperpolarized Xe-129 and H-1 NMR spectroscopy".MICROPOROUS AND MESOPOROUS MATERIALS 288(2019):6. |
入库方式： OAI收割
来源：大连化学物理研究所
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