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Crystalline Structure and Thermal Stability of an Unknown ZIF L300 Phase

文献类型：期刊论文

作者Zhong, Jiajun2; Qian, Lixiong3; Wang, Hao2; Liu, Yunpeng; Yao, Lei; Lai, Yuecheng2; Song, Jianxin4; Wang, Xin5; Li, Yikun6; Xing, Xueqing
刊名INORGANIC CHEMISTRY
出版日期2023-03-13
卷号62期号:10页码:4385-4391
ISSN号0020-1669
DOI10.1021/acs.inorgchem.3c00160
英文摘要In recent years, the synthesis, crystalline structure, and applications of zeolite imidazole frameworks (ZIFs) have attracted extensive attention. Since the ZIF L phase was synthesized, a new phase was observed during the heating process, but its crystal structure is unknown. The unknown new phase, which was named ZIF L300 in this study, was confirmed again. In this study, the X ray powder diffraction technique and Rietveld refinement were used to solve the crystalline structure of the unknown ZIF L300 phase. The results demonstrate that ZIF L300 has the same chemical formula (ZnC8N4H10) as in ZIF 8 and belongs to a hexagonal structure with a space group of P61. The lattice parameters have been determined as follows: a = b = 8.708(7) angstrom, c = 24.195(19) angstrom, alpha = beta = 90 degrees, and gamma = 120 degrees. The X ray absorption fine structure (XAFS) technique was also used to extract the local atomic structures. The in situ X ray diffraction (XRD) technique was used to monitor the structural evolution of the as prepared ZIF L in a temperature range from room temperature to 600 degrees C. The results show that the sample experiences a change process from the initial ZIF L orthorhombic phase (<210 degrees C), to the ZIF L300 hexagonal phase (similar to 300 degrees C), then to an amorphous phase (similar to 390 degrees C), and finally to a zincite ZnO phase (>420 degrees C). These sorts of structural information are helpful to the application of ZIF materials and enrich the knowledge of the thermal stability of ZIF materials.
分类号一类
WOS研究方向Chemistry, Inorganic & Nuclear
语种英语
WOS记录号WOS:000942853600001
资助机构National Key R&D Program of China [2022YFA1603802, 2017YFA0403000, 2017YFA0403100]
其他责任者Wu, ZH (corresponding author), Inst High Energy Phys, Chinese Acad Sci, Beijing 100049, Peoples R China. ; Wu, ZH (corresponding author), Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/91807]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.Inst High Energy Phys, Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
5.Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China
6.Qiqihar Univ, Coll Mat Sci & Engn, Qiqihar 161006, Peoples R China
7.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangdong 510006, Peoples R China
推荐引用方式
GB/T 7714		 Zhong, Jiajun,Qian, Lixiong,Wang, Hao,et al. Crystalline Structure and Thermal Stability of an Unknown ZIF L300 Phase[J]. INORGANIC CHEMISTRY,2023,62(10):4385-4391.
APA Zhong, Jiajun.,Qian, Lixiong.,Wang, Hao.,Liu, Yunpeng.,Yao, Lei.,...&Wu, Zhonghua.(2023).Crystalline Structure and Thermal Stability of an Unknown ZIF L300 Phase.INORGANIC CHEMISTRY,62(10),4385-4391.
MLA Zhong, Jiajun,et al."Crystalline Structure and Thermal Stability of an Unknown ZIF L300 Phase".INORGANIC CHEMISTRY 62.10(2023):4385-4391.

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来源：力学研究所

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