1 research outputs found
High-Visible-Light Photoactivity of Plasma-Promoted Vanadium Clusters on Nanozeolites for Partial Photooxidation of Methanol
Cold VCl<sub>3</sub>–plasma
is employed for the preparation
of highly dispersed vanadium oxide clusters on nanosized zeolite.
Different types of zeolites, such as EMT, FAU (z.X), and Beta, are
used. The activity of the prepared catalysts is studied in the selective
photooxidation of methanol under polychromatic visible and UV irradiations.
The physicochemical properties and catalytic performance of plasma-treated
zeolite Beta (P-V<sub>2</sub>O<sub>5</sub>@Beta) catalyst is compared
with zeolite Beta (V<sub>2</sub>O<sub>5</sub>@Beta) and amorphous
silica (V<sub>2</sub>O<sub>5</sub>@SiO<sub>2</sub>) impregnated vanadium
oxide catalysts. Pure V<sub>2</sub>O<sub>5</sub> is used as a reference
material. The set of catalytic data shows that plasma-prepared zeolite
Beta based catalyst displays the highest activity. Complementary characterization
techniques including XRD, N<sub>2</sub>-sorption, FTIR, ionic exchange,
pyridine adsorption, Raman, NMR, TPR, and EDX-TEM are used to study
the impact of the preparation approach on the physicochemical properties
and catalytic performance of photocatalysts