Spinel-Based Catalysts That Enable Catalytic Oxidation of Volatile Organic Compounds.

Volatile organic compounds (VOCs) have caused serious harm to human health and ecological environment, and have received much attention in recent years. Despite the successful applications of catalytic combustion of VOCs as the core technology of VOCs removal in industry, the development of efficient catalysts that can mineralize VOCs into nontoxic CO and HO at low temperatures remains a great challenge. Recent studies show that spinel-based materials as efficient catalysts were extensively used in the catalytic oxidation VOCs field due to their synergistic effect, manifold compositions, and electron configurations.

Local Electron Environment Regulation of Spinel CoMnO Induced Effective Reactant Adsorption and Transformation of Lattice Oxygen for Toluene Oxidation.

In contrast to numerous studies on oxygen species, the interaction of volatile organic compounds (VOCs) with oxides is also critical to the catalytic reaction but has hardly been considered. Herein, we develop a highly efficient Pt atom doped spinel CoMnO (Pt-CoMn) for oxidation of toluene at low temperature, and the toluene conversion rate increased by 18.3 times (129.

Enhancement of toluene oxidation performance over LaCoO perovskite by lanthanum non-stoichiometry.

LaCoO catalysts with different non-stoichiometry of lanthanum ions were synthesized by using the sol-gel method, and their catalytic performance in toluene combustion was investigated. The results showed that the catalytic activity and stability of A-site nonstoichiometric LaCoO were improved to a certain extent compared with pure LaCoO perovskite. Among them, the LaCoO catalyst gave the best catalytic performance for toluene oxidation.

Effect of alkaline earth metal promoter on catalytic activity of MnO for the complete oxidation of toluene.

Herein, Na and Ca are introduced to MnO through cation-exchange method. The presence of Na and Ca significantly enhance the catalytic activity of MnO in toluene oxidation. Among them, the Ca-MnO catalyst exhibits the best catalytic activity (T = 194°C, T = 215°C, E = 57.

Tuning oxygen vacancy concentration of MnO through metal doping for improved toluene oxidation.

Oxygen vacancy acts an important role in adjusting the chemical properties of MnO. In this paper, two-dimensional MnO catalysts with different oxygen vacancy concentration are obtained by doping Cu. It is researched that the K species in the interlayer of birnessite-type MnO can be substituted during the Cu doping process.