摘要
采用饱和蒸气扩散技术,将2,4-二羟基苯甲醛缩异烟酰腙(H_2dhbi)配体分别与Zn(ClO_4)2·6H_2O和Zn(NO_3)_2·6H_2O进行配位作用,得到2种不同配位模式的金属-有机框架材料[(dhbi)_2Zn_2·8H_2O]n(1)和{[(dhbi)_2(H_2O)_2Zn_2]·4DMF]}n(2).利用X射线单晶衍射、热分析技术(TG-DTA)和X射线粉末衍射(PXRD)等方法进行了结构表征.进一步将配位聚合物1和2用于对甲醇分子的吸附性能研究,结果表明,化合物1是一种理想的微孔材料,其对甲醇分子的吸附能力为化合物2的近5倍,采用PLATON对材料的孔隙体积进行计算得到化合物1和2的孔隙率分别为38.2%和5.5%.
By employing the N'-( 2,4-dihydroxybenzylidene)-isonicotinohydrazide ligand to assemble with zinc ions in different solvents,the two metal-organic frameworks( MOFs) 1 and 2 were obtained,namely[( dhbi)2Zn2·8H2O]n( 1) was obtained from the ligand assemble with Zn( ClO4)2·6H2O,{ [( dhbi)2( H2O)2Zn2]·4DMF]}n( 2) was obtained from the ligand assemble with Zn( NO3)2· 6H2O using diffusion technology of saturated vapor. Single crystal diffraction was used to characterize their structures.Thermogravimetric analysis( TG-DTA) and powder X-ray diffraction( PXRD) were used to measure their thermal stability and purity. The results of vapor adsorption for Me OH indicate that complex 1 is a kind of satisfactory microporous material,further the complex 1 shows 38. 1% void volume,and the complex 2 shows 5. 5%void volume according to PLATON calculations.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2016年第6期1069-1074,共6页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:21061003)
教育部"春晖计划"(批准号:Z2012054)资助~~
关键词
2
4-二羟基苯甲醛缩异烟酰腙
锌(Ⅱ)配合物
金属-有机框架
晶体结构
甲醇
吸附
N'-(2
4-Dihydroxybenzylidene)-isonicotinohydrazide
Complex of Zn(Ⅱ)
Metal-organic frameworks(MOFs)
Crystal structure
Methanol
Adsorption