Adsorption properties and performance of CPO-27-Ni/alginate spheres during multicycle pressure-vacuum-swing adsorption (PVSA) CO2 capture in the presence of moisture

Kinetic separation of CO2/CH4 mixtures with Ni-MOF-74@Al2O3 core–shell composites

“…The production of pure Ni-MOF-74 was executed by a hydrothermal synthesis according to Dasgupta and Dietzel [15,16]. At first two aqueous precursor solutions were prepared by separately dissolving nickel(II) acetate tetrahydrate (> 99% from Sigma-Aldrich) and 2,5-dihydroxyterephthalic acid (98% from Sigma-Aldrich) in water.…”

“…Core-shell composites are also suitable for decomposing gas mixtures (e.g. flue gas, [15]). The MOF shell, which is in contact with the flue gas, has the task of selecting carbon dioxide, which diffuses further into the mesoporous core.…”

“…The use in moist and acid atmospheres caused by the simultaneous occurrence of CO 2 and water vapor requires stable MOFs. A suitable species with high hydrothermal stability is the nickel dihydroxy terephthalate Ni-MOF-74 [15] used in this study for the separation of CH 4 /CO 2 mixtures.…”

Research progress in metal–organic frameworks (MOFs) in CO2capture from post-combustion coal-fired flue gas: characteristics, preparation, modification and applications

“…PMMA binder was easy to apply to other MOFs (UiO-66, ZIF-8, and HKUST-1), which provided a great support for large-scale industrial formation of MOFs. Dasgupta et al 142 prepared CPO-27-Ni/alginate microspheres through a dissolution-drying method and performed multiple PVSA cycles in dry and wet synthetic flue gas to evaluate the stability of CO 2 capture after combustion. It is found that the adsorbent can operate stably for more than 100 cycles with strong reproducibility.…”

Production of MOF Adsorbent Spheres and Comparison of Their Performance with Zeolite 13X in a Moving-Bed TSA Process for Postcombustion CO2 Capture

“…In the case where the CO 2 is to be removed from a flue gas, either from power plants (coal or gas fired) or energy intensive industries (cement, steel, waste incinerators), the total pressure of the flue gas is often around 1 atm with 4–30 vol % CO 2 , the rest being N 2 , O 2 , H 2 O, and varying amounts (most often in the ppm range) of SO x , NO x , and other impurities depending on the combustion source and flue gas cleaning. Disregarding the sulfur- and nitrogen-containing impurities, there are several MOFs that show promising performance for removal of CO 2 at low partial pressures in the presence of water vapor: the CPO-27/MOF-74/M 2 (dobdc) (dobdc = 2,5-dioxidobenzene-1,4-dicarboxylate) family with either Mg or Ni as a metal component, UTSA-16, the SiFSIX family with either Cu or Zn as a metal component, and last, but not least, the Diamin-appended mmen-Mg 2 (dobpdc) (dobpdc = 4,4′-dioxidobiphenyl-3,3′-dicarboxylate) system, all showing high selectivity for CO 2 over N 2 , significant CO 2 capacity at around 10 kPa CO 2 pressure, and also reasonable stable cyclic performance in the presence of water vapor. − …”