Hydrogen Sorption in Functionalized Metal−Organic Frameworks

Abstract

Five porous metal-organic frameworks based on linking zinc oxide clusters with benzene-1,4-dicarboxylate, naphthalene-2,6-dicarboxylate, 4,5,9,10-tetrahydropyrene-2,7-dicarboxylate, 2,3,5,6-tetramethylbenzene-1,4-dicarboxylate, or benzene-1,3,5-tris(4-benzoate) were synthesized in gram-scale quantities to measure their hydrogen uptake properties. Hydrogen adsorption isotherms measured at 77 K show a distinct dependence of uptake on the nature of the link. At 1 atm, the materials sorb between 4.2 and 9.3 molecules of H2 per formula unit. The results imply a trend in hydrogen uptake with the number of rings in the organic moiety.

Probing the Lewis Acidity and Catalytic Activity of the Metal–Organic Framework [Cu3(btc)2] (BTC=Benzene‐1,3,5‐tricarboxylate)

“…Reaction of the ethylene ketal of 2-bromopropiophenone (6) to 2-bromopropiophenone (7), 2-bromoethyl 2-phenylpropanoate (8), 2-chloroethyl 2-phenylpropanoate (9) and 5-methyl-6-phenyl-2,3-dihydro-1,4-dioxin (10). X = Br (8) or Cl (9). Table 8.…”

“…[1][2][3][4] In literature, the term MOF covers a wide assembly of hybrid compounds. [4,5] Because of the exceptionally high pore volume and surface area of MOFs, many research efforts have been spent to their application in the sorption of light gases, either as such [6][7][8][9][10] or after modification with, for example, Ba 2 + . [11] As porous materials, MOFs may also find applications in catalysis.…”

Enhanced Charge Collection in MOF‐525–PEDOT Nanotube Composites Enable Highly Sensitive Biosensing

“…MOFs have advantages such as tunable porosity, chemical stability, ultrahigh specific surface area, and ability to tune the surface chemistry. These features have enabled MOFs to find applications in diverse research fields including heterogeneous catalysis,9 gas storage,10 separation,11 capture,12 and chemical sensing 13. The electrochemical properties of MOFs have recently received significant attention in the chemical literatures 14.…”

Advances in the application of nanotechnology in enabling a ‘hydrogen economy’

“…Figure 23 shows the structure of different IRMOFs (having the same underlying topology) that are constructed by linking ZnO clusters with linear carboxylates. MOF-177 is formed by linking the same clusters with a trigonal carboxylate [136]. Table 8 lists the types of MOFs reported to date, along with their specific surface area and hydrogen capacity.…”

“…Rowsell et al [136] reported hydrogen uptake measurements on five different MOF materials and found that IRMOF-11 showed largest hydrogen uptake (1.62 wt.%) at 77 K and 1.01 bar. Figure 25 shows results of a detailed investigation of hydrogen adsorption properties in seven different MOFs conducted by Wong-Foy et al [149].…”