This work is focused on the characterization
of a novel vanadium pentoxide catalysts on a glass-fiber
support. The catalyst support consists of a non-porous
glass-fiber fabric covered with an additional external
surface layer of porous secondary support of SiO2. The
vanadia active component is synthesized from vanadyl
oxalate precursor by means of an impulse surface
thermo-synthesis method. Such catalysts demonstrate
high activity and appropriate selectivity in the reaction
of H2S oxidation by oxygen into sulfur in the practically
important temperature range below 200°C. According to
the characterization data, the freshly prepared vanadia
catalyst partially consists of mostly the amorphous
and badly ordered vanadia with some part of the wellcrystallized
V2O5 phase. Under the reaction conditions
the main part of vanadia in the catalyst remains in the
amorphous V2O5 form, while the less part becomes reduces
into of VO2 and other vanadium oxides (such as VO, V2O3
V3O7 and V4O9). Most probably, the crystallized V2O5 in
course of reaction is responsible for the deep oxidation of hydrogen sulphide into SO2, while the lower vanadium
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