Ionic encapsulation of a methanol carbonylation catalyst in a microporous metal–organic framework

Abstract

The anionic rhodium complex cis-[Rh(CO)2I2]–, active in the Monsanto process for acetic acid production, has been heterogenised via Coulombic interactions in the pores of a UiO-66-type metal-organic framework (MOF). The...

UiO-66 derived ZrO2@C catalysts for the double-bond isomerization reaction of 2-butene

“…Metal organic frameworks (MOFs), as a porous material composed of metal nodes and organically linked ligands, can be utilized as acid catalysts by pre-/post-treatments. [30][31][32][33] The unique multidimensional regular pore structure of MOFs makes them a proper choice for catalyst carriers. However, the microporous structure of MOFs limits the physical diffusion of reactants and products, which gives rise to signicantly insuf-cient contact of reactants with the catalytic active site.…”

Assembly of an iron-based complex into a metal–organic framework: a space confinement strategy for isolation of mono-iron complexes to protect from dimerization

“…[17][18][19] They provide an ideal host matrix for guest metal complex (even macromolecules) isolation/entrapment due to their highly tuneable pore structure and pore chemistry. 8,12,[20][21][22][23][24][25][26][27][28] In practice, there are two common ways for guest@MOFs installation: 12,21,29,30 (i) the direct immersion way, in which the obtained MOF crystals by standard synthesis are added to the highly concentrated solution of guest molecules, and after a suitable dispersion time, the pristine hybrid materials are washed to remove the complexes attached to the crystal surface; [30][31][32][33] (ii) the "one-pot" way, in which the guests are added as ingredients to the reaction solution of MOFs, and during the crystallization, they will be wrapped inside the nanochannels of MOFs. [34][35][36][37][38] Unfortunately, both the synthetic routes are inappropriate for [(TPA)Fe II -2L] 2+ (L = labile ligands, mainly solvent molecules) incorporation because of its intrinsic dimerization process, especially at high concentrations and in warm solution.…”