Phthalocyanine- and Calixarene-Templating Effect on the Catalytic Performance of Solid Supported Vanadates

Abstract

Catalytic performance of solid supported monovanadate catalysts toward oxidation of propane is significantly affected by the templating effect of: (1) pretreatment of the solid support with calixarene derivatives before deposition of ammonium vanadate, (2) direct deposition of vanadyl phthalocyanine as the vanadate precursor. This effect is believed to be linked to the accessibility of the active sites, and was studied in comparison with a reference mesoporous support.

TiO2–SiO2 mixed oxides: Organic ligand templated controlled deposition of titania and their photocatalytic activities for hydrogen production

“…The superior photocatalytic activity of TiO 2 -SiO 2 -Pc-100 sample can be rationalized by the favorable tetrahedral coordination of Ti ions and optimal particle size of TiO 2 species. Along with our recent work on the templated deposition of vanadates [66], these results demonstrate that macrocyclic organic ligands provide a simple approach to the controlled deposition of titania on solid supports.…”

Effect of Atomic Layer Deposition Support Thickness on Structural Properties and Oxidative Dehydrogenation of Propane on Alumina- and Titania-Supported Vanadia

“…The distribution of vanadium oxide deposited on zeolites was also studied by temperature programmed reduction (TPR) with H 2 [11]. Recently we found [12] that deposition of vanadates on solid supports in the presence of organic templates (phthalocyanine, calixarenes) does not change the extent of monovanadate polymerization, but affects interaction of vanadates with the solid support and, therefore, properties of the deposited catalysts.…”