High volumetric uptake of ammonia using Cu-MOF-74/Cu-CPO-27

Abstract

Cu-MOF-74 (also known as Cu-CPO-27) was identified as a sorbent having one of the highest densities of Cu(ii) sites per unit volume. Given that Cu(ii) in the framework can be thermally activated to yield a five-coordinate Cu(ii) species, we identified this MOF as a potential candidate for maximal volumetric uptake of ammonia. To that end, the kinetic breakthrough of ammonia in Cu-MOF-74/Cu-CPO-27 was examined under both dry and humid conditions. Under dry conditions the MOF exhibited a respectable performance (2.6 vs. 2.9 NH3 per nm(3) for the current record holder HKUST-1), and under 80% relative humidity, the MOF outperformed HKUST-1 (5.9 vs. 3.9 NH3 per nm(3), respectively).

Study of the scale-up, formulation, ageing and ammonia adsorption capacity of MIL-100(Fe), Cu-BTC and CPO-27(Ni) for use in respiratory protection filters

“…7 However, more commonly MOFs have been investigated as adsorbents for TIC removal in respiratory protection applications with a range of gases. The adsorption of hydrogen sulphide, 8 chlorine, 9 nitrogen oxide 10 and ammonia 11 into MOF materials have all been studied and generally the incorporation of a specic chemical functionality aids adsorption.…”

“…17 This paper aims to investigate three MOFs, MIL-100(Fe), Cu-BTC and CPO-27(Ni), which have been synthesised at a 1 kg scale 18 and formed in industrially relevant processes. These three materials have previously been studied 11 for ammonia adsorption within the literature. Here they have been evaluated for ammonia adsorption capacity using breakthrough measurements, which are compared to an activated carbon currently used within respiratory protection lters.…”

An efficient access to β-ketosulfones via β-sulfonylvinylamines: metal–organic framework catalysis for the direct C–S coupling of sodium sulfinates with oxime acetates

“…Metal-organic frameworks (MOFs) are crystalline and selforganizing reticular materials, consisting of metal cations sharing polytopic organic linkers. [11][12][13][14][15] Applications of MOFs in the eld of catalysis are somewhat delaying behind other domains. 16,17 With remarkably high porosity and almost innite synthetic tunability, MOFs have exhibited several advantages in catalysis over non-porous and zeolitic materials.…”

Formation of C–C and C–Heteroatom Bonds by C–H Activation by Metal Organic Frameworks as Catalysts or Supports

“…Quinoxalinone derivatives are synthetic intermediate for the preparation of important drug molecules with application in the formulation of pharmaceutical and agriculturalproducts [70][71][72]. The structure of Cu-CPO-27 was reported by series of researchers and corresponds to a honeycomb-like MOF based on the coordination between Cu(II) ions with 2,5-dihydroxyterephthalic acid 73,74. In this context, recently, a Cu-based MOF, Cu-CPO-27 (Figure 11) was reported as a solid heterogeneous catalyst promoting the coupling between quinoxalin-2(1H)-one with morpholine to give 3-morpholinoquinoxalin-2(1H)-one with 84 % yield using DMA as solvent at 80 o C under aerobic conditions (Scheme 18) 42.…”