A highly porous 4,4-paddlewheel-connected NbO-type metal–organic framework with a large gas-uptake capacity
作者:Zhaoxu Wang、Baishu Zheng、Heting Liu、Pinggui Yi、Xiaofang Li、Xianyong Yu、Ruirui Yun
DOI:10.1039/c3dt50704a
日期:——
NbO-type metal–organic framework (HNUST-2, HNUST represents Hunan University of Science and Technology) has been designed and synthesized by self-assembling [Cu2(COO)4] SBUs with a nanosized tetracarboxylate ligand prolonged by alkyne groups, 5,5′-(naphthalene-1,4-diylbis(ethyne-2,1-diyl))diisophthalic acid (H4NDED). HNUST-2 exhibits high structural stability, a porous non-interpenetration framework with
通过自组装[Cu 2(COO)4 ] SBU的设计和合成,制备了高度多孔的4,4桨轮连接的NbO型金属有机框架(HNUST-2,HNUST代表湖南科技大学)。被炔基延长的纳米级四羧酸盐配体,5,5'-(萘-1,4-二基双(乙炔-2,1-二基))二间苯二甲酸(H 4 NDED)。HNUST-2具有高结构稳定性,具有开放金属位点的多孔非互穿框架和出色的气体吸收能力。该MOF材料具有2366 m 2 g -1的高BET表面积,较大的不饱和过量和在20 bar和77 K下的总H 2吸收量分别为4.57 wt%和5. 20 wt%。同时,HNUST-2对CO 2(20 bar和298 K时为18.07 mmol g -1)和CH 4(20 bar和298 K时为85.6 cm 3 cm -3)表现出优异的吸附能力,并且对CO的选择性高。2在N 2(22.9)和CH 4 (4.9)在298K。