Selective catalytic reduction of NO by CO over MOF-based CuOx@ZIF-67 catalysts and reaction mechanism

Advancements of MOFs in the Field of Propane Oxidative Dehydrogenation for Propylene Production

“…By comparing the FTIR spectra of fresh UoB-4 with those of UoB-4 subjected to the Hantzsch reaction and UoB-4 subjected to alcohol oxidation, the consumption and generation of chemical functional groups during the reaction can be determined, providing significant assistance in understanding the source of catalytic activity and facilitating the exploration of catalytic pathways ( Figure 14 ). In situ XPS [ 75 , 76 ]: XPS uses X-rays to irradiate the surface of a material and measures the kinetic energy and quantity of electrons escaping from the material surface (usually within 10 nm) to obtain information about the elemental composition, content, and chemical state of the material surface. It can be used for the qualitative and quantitative analysis of samples.…”

“…After evaluating the catalytic activity of a catalyst through specific experiments, it is necessary to infer the reaction mechanism, which is crucial for a fundamental understanding of reactions and the design of materials with improved performance. By utilizing in situ techniques such as FTIR [ 73 , 74 ] and XPS [ 75 , 76 ], information regarding the changes of functional groups and active species before and after the reaction can be obtained, facilitating a preliminary inference of the reaction mechanism. Additionally, DFT calculations serve as a tool to study multi-phase catalytic processes and their elementary steps at the atomic level, providing theoretical support and guidance for the proposed reaction mechanism.…”

MOF-based catalysts: insights into the chemical transformation of greenhouse and toxic gases

“…Interestingly, MOF-based composites are existing alternative catalysts for this reaction. Wang et al , 150 reported a CuO x @ZIF-67 catalyst for NO reduction using CO. The conversion was 100% at 300 °C since the Cu clusters considerably improve the oxygen vacancies.…”

Fabrication of Magnetic Core–Shell CZ/Fe3O4 Catalysts for Catalytic CO-SCR

“…Therefore, domestic researchers have gradually turned their attention to nonprecious metal catalysts, aiming at the development of catalysts that can reduce costs and have excellent catalytic effects. 8 In recent years, iron-containing catalysts have attracted much attention due to their outstanding SCR performance, low cost, high selectivity to N 2 , and environmental performance, 1,9,10 In previous studies, a variety of mixed transition metal oxides were used as active components of the catalysts to promote the SCR reaction. So far, most of the research on iron-based catalysts has focused on Fe 2 O 3 (hematite), but the poor regeneration of Fe 2 O 3 affects the reuse of the material.…”

“…In recent years, iron-containing catalysts have attracted much attention due to their outstanding SCR performance, low cost, high selectivity to N 2 , and environmental performance, ,, In previous studies, a variety of mixed transition metal oxides were used as active components of the catalysts to promote the SCR reaction. So far, most of the research on iron-based catalysts has focused on Fe 2 O 3 (hematite), but the poor regeneration of Fe 2 O 3 affects the reuse of the material. , Therefore, nanomagnetic recyclable materials became popular.…”