Nanochannel {InZn}–Organic Framework with a High Catalytic Performance on CO<sub>2</sub> Chemical Fixation and Deacetalization–Knoevenagel Condensation
Brønsted acid sites in the high porous framework, the catalytic performance of activated NUC-42a upon CO2 cycloaddition with styrene oxide was evaluated under solvent-free conditions with 1 atm of CO2 pressure, which exhibited that the reaction could be well completed at ambienttemperature within 48 h or at 60 °C within 4 h with high yield and selectivity. Moreover, because of the acidic function of
In III 5p 和 Zn II 3d 在结构取向的 TDP 6–配体存在下的罕见组合导致了(Me 2 NH 2 )[InZn(TDP)(OH 2 )]·4DMF·的坚固杂化材料4H 2 O} n ( NUC-42 ) 具有由六排未记录 [InZn(CO 2 ) 6 (OH 2)] 簇,代表第一个基于 5p-3d 纳米通道的异金属金属有机框架。关于高多孔骨架中多种共生的路易斯酸碱和布朗斯台德酸位点,在无溶剂条件下,在 1 个大气压的 CO 2压力下评估了活化的NUC-42a对 CO 2与氧化苯乙烯环加成的催化性能,这表明该反应可以在室温下在 48 小时内或在 60°C 下在 4 小时内很好地完成,具有高产率和选择性。此外,由于金属位点的酸性功能和 TDP 6-在微温条件下,NUC-42a的活化样品可以有效地促进缩醛和丙二腈的脱缩醛化-Knoevenagel 缩合。
An Uncommon Carboxyl-Decorated Metal-Organic Framework with Selective Gas Adsorption and Catalytic Conversion of CO<sub>2</sub>
[Ni(btzip)(H2btzip)]⋅2 DMF⋅2 H2O (1) (H2btzip=4,6‐bis(triazol‐1‐yl)isophthalic acid) as an acidic heterogeneous catalyst was constructed by the reaction of nickel wire and a triazolyl‐carboxyl linker. Framework 1 possesses intersected 2D channels decorated by free COOH groups and uncoordinated triazolyl N atoms, leading to not only high CO2 and C2H6 adsorption capacity but also significant selective capture for
Spatially Ordered Arrangement of Multifunctional Sites at Molecule Level in a Single Catalyst for Tandem Synthesis of Cyclic Carbonates
作者:Shan-Chao Ke、Ting-Ting Luo、Gang-Gang Chang、Ke-Xin Huang、Jia-Xin Li、Xiao-Chen Ma、Jian Wu、Jian Chen、Xiao-Yu Yang
DOI:10.1021/acs.inorgchem.9b02952
日期:2020.2.3
ordered arrangement of catalytic sites. The Au NPs and imidazolium cation are separately responsible for the selective epoxidation and cycloaddition reaction. The mesoporous cage within the MOF enriches the substrate molecules and provides a confined catalytic room for the tandem catalysis. More importantly, the highly ordered arrangement of the varied active sites and strong electrostatic attraction
RETRACTED ARTICLE: A porous Er(III)–organic framework as a highly efficient catalyst for chemical fixation of CO2 and treatment activity on senile deafness via inducing the cochlear hair cell apoptosis
作者:Xiao-Yan Sun、Jun-Nan Li、Gui-Mei Dong、Yan-Li Tao、Yao Chen、Shu-Qin Yang
DOI:10.1007/s13738-020-02111-w
日期:2021.6
A microporous Er(III)-based metal–organic framework (MOF), whose chemical formula can be written as [Er(TCPB)(H2O)]·dioxane·0.5H2O}n, has been formed from the tripodal ligand 1,3,5-tris(4-carbonylphenyloxy)benzene (H3TCPB) by solvothermal synthesis and determined by the single crystal X-ray diffraction and the elemental analysis. With the aid of microporous framework and abundant catalytic sites of open Er(III) sites, the activated 1 is a special catalyst for the synthesis of cyclic carbonates from carbon dioxide and epoxy compounds under the cocatalyst TBAB and gently solvent-less conditions. The treatment activity of the compound on the senile deafness, as well as the influence of the compound on the cochlear hair cell death was explored. Firstly, the cell apoptosis of the cochlear hair cells was estimated via CCK-8 assay. Next, the activation of the caspase-3,8 was evaluated with western blot.