Many chemical compositions produce layered solids consisting of extended sheets with
thickness not greater than a few nanometers. The layers are weakly bonded together in a …

This paper reviews the synthesis of smectites and porous pillared clay catalysts. Synthetic as
well as natural smectites serve as precursors for the synthesis of Al, Zr, Ti, Fe, Cr, Ga, V, Si …

Nafion resin, a perfluorinated ion-exchange polymer, has been used as a heterogeneous
strong acid catalyst for a range of reactions; however, in nonpolar solvents or for gas phase …

In single-site olefin polymerization catalysis, a large excess of cocatalyst is often required for
the generation of highly active catalysts, but the reason for this is unclear. In this work …

TiO2 pillared clay materials were prepared by montmorillonite (Mt) and acidic solutions of
hydrolyzed Ti alkoxides in the presence of high-molecular-weight polyoxypropylene (POP) …

Two porous metal-organic frameworks (MOFs) incorporating pentanuclear Yb (III) clusters
and pyridyl-supported tetracarboxylates or pyridyl carboxylic acid-supported …

Metal–organic frameworks (MOFs) provide convenient systems for organizing high
concentrations of single catalytic sites derived from metallic or oxo-metallic nodes. However …

Two series of chemically and thermally stable rare-earth MOFs were constructed using
trinuclear [M3 (μ3-OH)(COO) 6] SBUs and linear dicarboxylate linkers, which feature three …

An acid-treated montmorillonite clay has been ion-exchanged with Al 3+, Fe 3+, Cu 2+, Zn
2+, Ni 2+, Co 2+ and Na+. The catalytic activities of these materials have been measured in …

Solid acids hold widespread applications in the field of heterogeneous catalysis. In this
work, we present pyridine UV-Vis spectroscopy as a novel and promising tool to study the …