Publication number: 20240327442
Abstract: Methods of synthesizing crystalline metal-organic frameworks (MOFs) having polytopic organic linkers and, cations, where each linker is connected, to two or more cations, are provided. In the disclosed methods, the linkers are reacted with one or more compounds of formula MnXm, where each M is independently cationic Be, Mg, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Rh, Pd, Cd, or Hf, X is anionic, n and m are integers. The reaction is performed in the presence of a salicylate, salicylamide, 1,3-phthalate, or hydroxybenzoate based modulator.
Type:
Application
Filed:
July 21, 2022
Publication date:
October 3, 2024
Inventors:
Megan N. Jackson, Jeffrey R. Long, Joseph M. Falkowski
Publication number: 20240261720
Abstract: A porous metal-organic framework M(dicarboxylate), where M=a divalent transition metal ion or alkaline earth metal ion, and (dicarboxylate)=a dicarboxylate linker with a layered two-dimensional structure with paddlewheel-type metal nodes forming a three-dimensional structure with rhombic channels along a c axis. The M(dicarboxylate) family of frameworks, where M=Cu, Fe, Cr, Mg, Ca, Mn, Co, Ni, Zn, Mo or Cd and (dicarboxylate)=trans-1,4-cyclohexanedicarboxylate, 1,4-benzenedicarboxylate, 4,4?-biphenyldicarboxylate, or 2,3,5,6-tetrafluorobenzenedicarboxylate, reversibly binds ammonia via cooperative insertion into its metal-carboxylate bonds to form a dense, one-dimensional coordination polymer that has rapid adsorption kinetics, a comparatively large working capacity and minimal expansion upon ammonia capture.
Type:
Application
Filed:
February 6, 2024
Publication date:
August 8, 2024
Applicant:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Inventors:
Jeffrey R. Long, Benjamin E. R. Snyder, Ari B. Turkiewicz, Hiroyasu Furukawa, Maria V. Paley, Ever O. Velasquez, Matthew N. Dods
Patent number: 11097250
Abstract: Methods of synthesizing crystalline metal-organic frameworks (MOFs) comprising polytopic organic linkers and cations, where each linker is connected to two or more cations, are provided. In the disclosed methods, the linkers are reacted with a compound of formula MnXm, where M is cationic Be, Mg, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Rh, Pd, Cd, or Hf, X is anionic, n and m are integers. The reacting is buffered by a buffer devoid of metal coordinating functionality when the pKa of the anion is below a threshold related to the lowest pKa of the linker. The reacting is optionally not buffered when the pKa of the anion is at or above this threshold. The disclosed methods lead to product phase MOF in which crystal growth is controlled leading to control over molecular diffusion.
Type:
Grant
Filed:
September 25, 2019
Date of Patent:
August 24, 2021
Assignees:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventors:
Simon C. Weston, Jeffrey R. Long, Joseph M. Falkowski, Kristen Colwell, Rodolfo Torres