On May 15, 2013, Qian, Guodong; Rao, Xingtang; Cai, Jianfeng; Cui, Yuanjing; Yang, Yu; Wang, Zhiyu published a patent.COA of Formula: C21H13NO8 The title of the patent was Preparation of metal organic frame material for adsorbing and storing methane. And the patent contained the following:
The title metal organic frame material has a three-dimensional network structure consisting of transitional metal ion and organic ligand through coordination bonds or intermol. force, and is prepared by dissolving nitrate, acetate, chloride, carbonate, sulfate or perchlorate of Cu, Zn, Cd, Co, Ni or Mn and I (R1-3 =H, F, Me, NH2, MeO, HO, NO2) in water and/or organic solvent, reacting at 40-120°C to give the metal organic frame material, allowing exchange of the metal organic frame material with acetone, and activating at 0°C under vacuum condition for 36 h and then at 100°C for 12 h. The three-dimensional network structure has sp. surface area 2000-3000 m2/g and pore volume 1-2 cm3/g. Preferably, the transitional metal ion is divalent Cu, Zn, Co, Ni, Cd, and Mn ion. The organic ligand contains pyridine, F, Me, amino, methoxy, hydroxy, nitro, etc., which do not participate in coordination. The metal organic frame material has high sp. surface area, pore volume, and thermal stability, large methane adsorption and storage capacity under variable temperature and variable pressure, simple preparation process, low cost, and repeated use. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).COA of Formula: C21H13NO8
The Article related to metal organic frame material preparation methane adsorption storage, Unit Operations and Processes: Separation Processes and other aspects.COA of Formula: C21H13NO8