基于三角型三羧酸配体的微孔Pr-MOF的晶体结构、表征和原位合成量热研究

Crystal Structure,Characterization and Calorimetric in Situ Synthesis of Microporous Pr-MOF Based on Triangular Tricarboxylic Acid Ligand

王智香 ¹任小杰 ²袁娜娜 ¹任宜霞¹

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作者信息

1. 延安大学化学与化工学院,陕西延安 716000
2. 延长油田股份有限公司下寺湾采油厂,陕西延安 716000
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摘要

以4,4',4"-三嗪-2,4,6-三基三苯甲酸(H3TATB)的三角型三羧酸为有机配体,在水热条件下与硝酸镨反应合成了一种新型Pr-MOF微孔材料,命名为[Pr(TATB)(H2O)](1).晶体结构分析表明,该配合物具有以共边缘双核金属单元为特征的三维骨架.气体吸附实验表明,配合物具有微孔性,且对CO2的吸附性能优于N2.固态发射光谱表明,配合物在可见光范围内有特征发射.采用微量热法在413.15 K模拟了 1的原位合成过程,结果表明配合物的合成过程可分为三个阶段,获得结晶过程的反应速率常数为k=2.91×10-10.

Abstract

One new microporous Pr(Ⅲ)-MOF,named as[Pr(TATB)(H2O)](1),has been synthe-sized from 4,4',4"-triazine-2,4,6-triyl-tribenzoate(H3TATB)with praseodymium salt under hydrother-mal conditions.Structural analysis shows the complex exhibits a three-dimensional framework featur-ing the co-edged binuclear metal units.The CO2/N2 adsorption experiments of 1 demonstrate the higher CO2 uptake and the microporous structure.The luminescence spectra of 1 have been studied in the solid state and display characteristic transitions of the Pr3+ion in the visible light range.The synthesis pro-cess of 1 could be divided into three stages when simulated by microcalorimetry in situ at 413.15 K,and the reaction rate constant of crystallizing is gained with the value of k=2.91×10-10.

关键词

配合物/晶体结构/发光性质/原位量热法

Key words

microporous framework/crystal structure/luminescence property/microcalorimetry in situ

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基金项目

国家自然科学基金(22063010)

陕西青年创新团队项目()

出版年

2024

咸阳师范学院学报

咸阳师范学院

咸阳师范学院学报

CHSSCD

影响因子：0.137

ISSN：1672-2914

参考文献量26

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