Catalytic Oxidation of 1,2-Dichloroethane on RuCoOx/CePO4 Catalysts:
Synergetic Inhibition of Chlorinated Byproducts
Abstract
Highly toxici and reactive chlorinated VOCs (Cl-VOCs) is urgent for
purification by the most favoured catalytic oxidation, however, the
formation of polycholoriated byproducts is hugely obstacle. Here,
monoclinic and 3D urchin-like CePO4 was synthesized and used as the
support of highly active but lowly selective Co3O4 for catalytic
oxidation of Cl-VOCs. The prepared Co3O4/CePO4 using ascorbic acid as a
chelating agent presented a high activity and low selectivity of vinyl
chloride (VC) for catalytic oxidation of 1,2-dichloroethane (DCE) due to
the high dispersion of Co3O4, some possible polychlorinated byproducts
were completely inhibited in the presence of CePO4. The co-introduction
of RuO2 further suppressed the formation of VC owing to the enhanced
redox ability and migration of surface lattice oxygen. Moreover,
RuCoOx/CePO4 also revealed the superior versatility, durability and
thermal stability as well as the outstanding resistance to CO2, H2O and
sulfur.