Decomposition of selected chlorinated volatile organic compounds by ceria (CeO₂)

Abstract

Guided by recent experimental measurements, this study theoretically investigates the initial steps operating in the interactions of ceria surface CeO2(111) with three CVOC model compounds, namely chloroethene (CE), chloroethane (CA) and chlorobenzene (CB).

Electrostatic-Interaction-Driven Assembly of Binary Hybrids towards Fire-Safe Epoxy Resin Nanocomposites

“…The mechanism of catalytic conversion of CO into CO 2 is proposed in Figure 16 . Combined with the XPS results obtained from Figure 6 , it is inferred that the capacity of Mn to adapt several oxidation states enables it to undergo oxygen reduction reactions, indicating MnO 2 nanosheets can act as a reservoir for oxygen, analogous to the previous work [ 42 ]. Certainly, toxic gases in real scenarios only contain CO instead of a wide array of hydrocarbons.…”

Facet control of manganese oxides with diverse redox abilities and acidities for catalytically removing hazardous 1,2-dichloroethane

“…10, the probable combustion mechanisms of 1,2-DCE over four kinds of MnO 2 are summarized in Scheme 1. As reported, the chlorined compounds catched by the oxygen vacancies are more unstable than those bonded with Mn 4+ ion 48 and inclined to be reacted to form HCl, which facilitates Cl desorption. Hence, it is deduced that the a better catalytic performance during 1,2-DCE combustion process, which is attributed to the abundant oxygen vacancies, the excellent ability on surface oxygen migration, more acid sites and less Mn 4+ content on the surface.…”

Dual catalyst system for selective vinyl chloride production via ethene oxychlorination

“…18 In addition, similar to the beneficial effects that ceria provides when used as a carrier, 19 appropriate carriers for CeO 2 could promote the EDC-to-VCM conversion step by introducing acid functionalities that are required for this reaction. 14,16,17,[20][21][22][23][24][25] In fact, as reported in the literature, several acid materials, such as Al 2 O 3 or Pt-Cu/SiO 2 , are active in EDC dehydrochlorination. 20,26 If applied as active carriers or co-catalysts for CeO 2 , these materials can allow integration of oxychlorination and dehydrochlorination reactions in a single catalytic system.…”