Heterogeneous catalysts undergo thermal-and/or adsorbate-induced dynamic changes
under reaction conditions, which consequently modify their catalytic behavior. Hence, it is …

This critical review describes the reactivity of heterogeneous catalysts from the point of view
of four simple, but essential for Chemistry, molecules (namely dihydrogen, carbon …

The infrared spectral performance of the N x O y species observed on oxide surfaces [N2O,
NO−, NO,(NO) 2, N2O3, NO+, NO2−(different nitro and nitrito anions), NO2, N2O4, N2O5 …

Among the transition metal ions of the 3d series, Cr takes a particular position because of its
variability in oxidation state, coordination numbers and molecular structure. 1, 2 The …

The Phillips supported chromium catalyst is used to produce some 40–50% of the world's
high-density polyethylene. The chemistry of this important catalyst is reviewed from an …

The discovery of olefin polymerization catalysts in the early 1950s by Ziegler and Natta
represents a milestone in industrial catalysis. This discovery was of outstanding relevance …

Publisher Summary This chapter discusses supported chromium (Cr) catalysts for ethylene
polymerization. The Phillips Cr/silica polymerization catalyst is prepared by impregnating a …

Chemisorption of small molecules is often used as a probe for By probing the surface
properties of transition metal oxides. the interaction of molecules with the surface …

Publisher Summary This chapter presents a survey of the theoretical and applied aspects of
microcalorimetry to heterogeneous catalysis with particular emphasis on the determination …

Coordination polymer Ni2 (dhtp)(H2O) 2· 8H2O is a 3D network that maintains crystallinity
and porosity after solvent removal. A mild thermal treatment in high vacuo at 393 K removes …