Porous MOF with Highly Efficient Selectivity and Chemical Conversion for CO₂

Abstract

A new Co(II)-based MOF, {[Co(tzpa)(OH)(HO)]·DMF} (1) (Htzpa = 5-(4-(tetrazol-5-yl)phenyl)isophthalic acid), was constructed by employing a tetrazolyl-carboxyl ligand Htzpa. 1 possesses 1D tubular channels that are decorated by μ-OH groups, uncoordinated carboxylate O atoms, and open metal centers generated by the removal of coordinated water molecules, leading to high CO adsorption capacity and significantly selective capture for CO over CH and CO in the temperature range of 298-333 K. Moreover, 1 shows the chemical stability in acidic and basic aqueous solutions. Grand canonical Monte Carlo simulations identified multiple CO-philic sites in 1. In addition, the activated 1 as the heterogeneous Lewis and Brønsted acid bifunctional catalyst facilitates the chemical fixation of CO coupling with epoxides into cyclic carbonates under ambient conditions.

Rational Stepwise Construction of Different Heterometallic–Organic Frameworks (HMOFs) for Highly Efficient CO2 Conversion

“…Nevertheless, it is difficult to controlt he formation of HMOFs, because there are variousp arameters influencing the synthesis of HMOFs, such as groups in the ligands, coordinationnumbers of metal ions, solventsystem,pHvalues of solutions, reaction temperature, and the ratio of metal-to-ligand, etc. [10][11][12][13][14][15][16][17][18] In this work, ab ifunctional2 -(imidazol-1-yl)terephthalic acid (H 2 L) ligand was chosen to build new HMOFso wing to:( i) the presence of both nitrogen and oxygen donor atoms in the ligand, ( (4), have been effectively and rationally constructed from complexes 1 and 2 as the precursors, respectively (Scheme 1). Moreover, thes ynthesized HMOFs bearing dual catalytics ites (Tb and Ag) can be used as heterogeneous catalysts for the chemical fixationo fC O 2 with epoxides,i ncluding sterically hindered epoxides.…”

An Uncommon Carboxyl‐Decorated Metal–Organic Framework with Selective Gas Adsorption and Catalytic Conversion of CO2

“…[19,20] Wherein, the existence of accessible open metal sites (OMSs)a nd/ora cidic groupsi nt he pores are crucial for the catalytica ctivity of MOFs, which serve not only as CO 2 -binding sites but also as Lewis and/or Brønsted acidic catalytic sites. [21][22][23][24][25][26][27][28][29][30][31][32] Notably,i nt hese MOF catalysts, the major catalytic sites are Lewis acidic OMSs, which are generated by the removal of coordinated solvents at high temperatures, however,t he harsh activationc onditions usually lead to the framework incompleteness to ad egree. In contrast,t he deliberate embedding of Brønsteda cidic sites in MOFs is an alternative andw orth anticipating approacht oa chieve the capture of CO 2 and its catalytic conversion with epoxides,w hereas related reports are rarely documented.…”

“…In contrast,t he deliberate embedding of Brønsteda cidic sites in MOFs is an alternative andw orth anticipating approacht oa chieve the capture of CO 2 and its catalytic conversion with epoxides,w hereas related reports are rarely documented. [28][29][30][31][32] Therefore, the fabrication of MOFs decorated by Brønsted acidic catalytic sites is highly required for the application of CO 2 capturea nd conversion.…”

Two Nickel(II) Coordination Polymers Based on Tri(p‐carboxyphenyl) phosphane Oxide with Highly Selectively and Sensitively Detection of Acetone

“…Different coordination atoms of those linkers usually endow themselves distinct coordination preferences when connecting metal ions . Thus, the mixed ligands strategy seems an efficient routine to build CPs for this strategy can take advantages of both polycarboxylates and N‐donors . Besides, the tripodal tricarboxylates containing unique backbones usually exhibit interesting structures and excellent properties , .…”