A convenient synthesis of core-shell Co3O4@ZSM-5 catalysts for the total oxidation of dichloromethane (CH2Cl2)

A convenient synthesis of core–shell ZSM-5@ZnO catalysts for methane co-aromatization with propane

“…1b), demonstrating that the plane spacing of ZSM-5@ZnO increased. 13 Due to the doping of Zn (with a larger ion radius of 0.07 nm), there was an increase in the interplanar spacing of ZSM-5@ZnO, which meant that when ZnO was added in the crystallization process of zeolite, a solid-solution reaction occurred. 12 The pore size distributions, the corresponding nitrogen physisorption isotherms and the pore structure data of ZSM-5, ZnO, ZSM-5/ZnO and ZSM-5@ZnO are depicted in Table 1 and Fig.…”

“…The special reaction pathway of the mesoporous shell (t-ZrO 2 ) and micropore core (ZSM-5) improved the selectivity of methanethiol and inhibited carbon deposition. Wang et al 13 synthesized a core-shell structured Co 3 O 4 @ZSM-5 catalyst for the catalytic oxidation of dichloromethane. The core-shell catalyst showed excellent thermal stability and durability for the reaction.…”

Confined Catalysts Application in Environmental Catalysis: Current Research Progress and Future Prospects

“…[92] The key factor in this strategy is the development of more efficient and stable catalytic oxidation catalysts. [93] Noble-metal-based catalysts show good activity for VOC oxidation at low temperatures. In addition, non-noble metal-oxide catalysts have been considered as low-cost alternatives to noble metals.…”

“…One of the most economical and effective technologies for removing VOCs is catalytic oxidation [92] . The key factor in this strategy is the development of more efficient and stable catalytic oxidation catalysts [93] . Noble‐metal‐based catalysts show good activity for VOC oxidation at low temperatures.…”

Comparative Studies of Phosphate-Modified CeO2 and Al2O3 for Mechanistic Understanding of Dichloromethane Oxidation and Chloromethane Formation

“…Thus, numerous methods are available for the abatement of CVOCs; catalytic combustion or total oxidation using supported noble metals, metal oxides, or zeolites as catalysts is regarded as one of the most efficient and promising strategies. Recently, considerable efforts have been devoted to improving the activity/stability of these catalysts and reducing the formation of polychlorinated byproducts. − Actually, the inhibition of more toxic and refractory polychlorinated byproducts has attracted most of the attention; however, less attention has been paid to another type of chlorinated byproducts or intermediate products, like dechlorinated or hydrodechlorinated organic compounds. For example, highly selective vinyl chloride (VC) and trace ethene were observed during catalytic combustion of 1,2-dichloroethane (DCE) over VO x /CeO 2 catalysts, the formation of acetylene chloride (C 2 HCl) and dichloroacetylene (C 2 Cl 2 ) occurred for catalytic oxidation of trichloroethylene (TCE), and chlorobenzene and benzene could be detected during catalytic combustion of dichlorobenzene or chlorobenzene over Mn-modified Co 3 O 4 catalysts .…”