Corrigendum to “Synergistic effect of CuO nanocrystals and Cu-oxo-Fe clusters on silica support in promotion of total catalytic oxidation of toluene as a model volatile organic air pollutant” [Appl. Catal. B Environ. 268 (2020) 118749]

Zhu

et al. 2021

ChemistrySelect

A series of Cu‐based spinel‐type complex oxides (CuB2O4, B=Fe, Mn, Co and Cr) was synthesized via sol‐gel method for soot combustion. The soot combustion was accelerated in the presence of all prepared CuB2O4 catalysts compared to that without catalyst. The CuCo2O4 catalyst exhibited the best catalytic activity, with the soot combustion temperatures T10, T50 and T90 of 480 °C, 539 °C and 569 °C, respectively. XRD patterns showed that the catalysts were mainly in spinel phase. The H2‐TPR, XPS and O2‐TPD characterizations revealed that the interactions between cobalt and copper led to higher content of the Cu+ species, better redox properties and abundant adsorbed oxygen species than the other three catalysts, which contributed to soot combustion. In addition, the catalytic activity of the CuCo2O4 catalysts on soot combustion were facilitated in the presence of NO, while water vapor inhibited the catalytic activity. Besides, the cycle tests clarified that CuCo2O4 catalyst exhibited good stability.

Section: Resultsmentioning

confidence: 55%

Activity and Stability of Cu‐Based Spinel‐Type Complex Oxides for Diesel Soot Combustion

Zhu

et al. 2021

ChemistrySelect

“…Nanomaterials exhibit unique physical and chemical properties due to their high specific surface area and abundant active sites. Djinovic et al found that there was a synergistic redox effect between CuO nanocrystals and uniformly dispersed Cu–oxo–Fe clusters, which increased the amount of adsorbed oxygen on the interface and lattice oxygen and promoted the catalytic oxidation of p -toluene. Single-metal (CuO) and bimetal (CuFeOx) catalysts on different supports are promising transition metal oxide catalysts which can replace the noble metal catalysts currently in use.…”

Section: Metal-based Catalysts For Voc Oxidationmentioning

confidence: 99%

Research Progress of a Composite Metal Oxide Catalyst for VOC Degradation

Ding

Pan

et al. 2022

Environ. Sci. Technol.

134

Volatile organic compounds (VOCs) are atmospheric pollutants that have been of concern for researchers in recent years because they are toxic, difficult to remove, and widely sourced and easily cause damage to the environment and human body. Most scholars use low-temperature plasma biological treatment, catalytic oxidation, adsorption, condensation, and recovery techniques to treat then effectively. Among them, catalytic oxidation technology has the advantages of a high catalytic efficiency, low energy consumption, high safety factor, high treatment efficiency, and less secondary pollution; it is currently widely used for VOC degradation technology. In this paper, the catalytic oxidation technology for the degradation of multiple types of VOCs as well as the development of a single metal oxide catalyst have been briefly introduced. We also focus on the research progress of composite metal oxide catalysts for the removal of VOCs by comparing and analyzing the metal component ratio, preparation method, and types of precursors and the catalysts’ influence on the catalytic performance. In addition, the reason for catalyst deactivation and a correlation between the chemical state of the catalyst and the electron distribution are discussed. Development of a composite metal oxide catalyst for the catalytic oxidation of VOCs has been proposed.

“…[32][33][34][35][36] Relatively few studies have been conducted on toluene oxidation catalysts with Fe as the main component. Xue et al 37 prepared a 0.1MnCF/IM catalyst by introducing Mn ions from KMnO 4 and Djinović et al 38 prepared catalyst Cu005Fe-KIL(30) by two-step solvothermal short and introduced Cu by impregnation, and the catalyst required a higher than 310 °C temperature to reach the removal efficiency of 90%. In comparison, CuFe-4.5 prepared in this study could provide higher catalytic activity to toluene in ue gas at lower temperatures.…”

Section: Catalytic Performance Test Of Derived Oxidesmentioning

confidence: 99%

Preparation of VOC low-temperature oxidation catalysts with copper and iron binary metal oxides via hydrotalcite-like precursors

Song

et al. 2022

RSC Adv.