Nanocrystalline AMn2O4 (A=Co, Ni, Cu) spinels for remediation of volatile organic compounds—synthesis, characterization and catalytic performance
Source abstract
Abstract
Abstract Nanocrystalline AMn 2 O 4 (A = Co, Ni, Cu) manganite spinels were prepared by using the sol–gel auto combustion method under the same synthesis conditions and their physico-chemical properties were studied by XRD, UV–vis DRS, SEM, BET and FTIR. Besides, the reducibility of oxides was studied by temperature-programmed reduction (TPR). The relationship between the properties and activity of spinels in oxidation of 2-propanol and toluene was investigated. Among all, nickel manganite exhibited the most promising activity, in which the completed conversion of 2-propanol and toluene occurred at 250 and 350 °C, respectively. Higher activity of nickel manganite oxide was explained in terms of the synergetic effect between Mn 3+ and Ni 2+ phases in nickel manganite oxide. No direct relationship was resulted between activity with either specific surface area or particle size of manganite oxides. No correlation was found between activity and energy band gap of the oxides. The study showed that the nickel manganite nano oxides could be promising catalysts for VOC removal. A relationship between VOC's structure and reactivity for conversion over catalysts was revealed, in which 2-propanol showed more reactivity than toluene to be converted over these catalysts.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Gas Sensing Nanomaterials and Sensors · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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1. Study of catalytic activities of nanostructure copper and cobalt supported ZSM-5 catalysts for conversion of volatile organic compounds
2. Evaluation of sewage sludge and yard waste compost as a biofilter media for the removal of ammonia and volatile organic sulfur compounds (VOSCs)10.1016/j.cej.2009.03.026 ↗
3. VOC oxidation over CuO–CeO2 catalysts prepared by a combustion method10.1016/j.apcatb.2009.02.003 ↗
4. VOC oxidation over MnOx–CeO2 catalysts prepared by a combustion method10.1016/j.apcatb.2008.04.006 ↗
5. Ceria-based oxides as supports for LaCoO3 perovskite; catalysts for total oxidation of VOC10.1016/j.apcatb.2005.10.037 ↗
6. Effects of iron and cerium in La1−yCeyCo1−xFexO3 perovskites as catalysts for VOC oxidation10.1016/j.apcatb.2008.11.007 ↗
7. The catalytic oxidation of aromatic hydrocarbons over supported metal oxide10.1016/S0304-3894(01)00396-X ↗
8. Design criteria for high-temperature combustion catalysts10.1023/A:1019069622476 ↗
9. Characterization and catalytic activity of Cu–Co spinel thin films catalysts10.1016/j.apsusc.2004.09.120 ↗
10. CNG engines exhaust gas treatment via Pd-Spinel-type-oxide catalysts10.1016/j.cattod.2006.06.003 ↗
11. Zavyalova · J. Petrol. Chem. · 2005 · 45 · 255
12. Catalytic removal of NOx and diesel soot over nanostructured spinel-type oxides10.1016/j.jcat.2006.05.023 ↗
13. Surface and catalytic properties of Co, Ni and Cu binary oxide systems10.1016/j.apcata.2004.09.006 ↗
14. Catalytic oxidation of toluene on Mn-containing mixed oxides prepared in reverse microemulsions10.1016/j.cattod.2004.06.042 ↗
15. The role of lattice oxygen on the activity of manganese oxides towards the oxidation of volatile organic compounds10.1016/j.apcatb.2010.07.007 ↗
16. Precursor control of the inversion degree of magnesium-cobalt spinels10.1007/BF00726922 ↗
17. Cation self-diffusion in LaFeO3 measured by the solid state reaction method10.1016/j.ssi.2006.01.006 ↗
18. Chemical-physical properties of spinel CoMn2O4 nano-powders and catalytic activity in the 2-propanol and toluene combustion: effect of the preparation method10.1080/10934529.2011.539093 ↗
19. Synthesis and characterization of sol–gel Cu–ZrO2 and Fe–ZrO2 catalysts10.1023/A:1019920531309 ↗
20. Combustion of volatile organic compounds on manganese iron or nickel mixed oxide catalysts10.1016/j.apcatb.2007.01.008 ↗
21. Synthesis, characterization, and performance of LaZnxFe1−xO3 perovskite nanocatalysts for toluene combustion10.1016/S1872-2067(09)60083-8 ↗
22. Catalytic oxidation of 2-propanol over (Cr, Mn, Fe)–Pt/γ-Al2O3 bimetallic catalysts and modeling experimental results by artificial neural networks10.1080/10934520903540570 ↗
23. Electronic and catalytic studies on Co1−xCuxMn2O4 for CO oxidation10.1023/A:1004803123577 ↗
24. Preparation, infrared spectroscopy, and phase stability of nanosized iron silicide powders10.1016/S0025-5408(99)00222-6 ↗
25. Structural and electrical properties of nano-sized magnesium aluminate
26. Optical, electrical and structural studies of nickel–cobalt oxide nanoparticles
27. Band gap determination in thick films from reflectance measurements10.1016/S0925-3467(98)00052-4 ↗
28. Measurement of structural and optical band gaps of Cd1−xZnxS (x=4 and 6) nanomaterials
29. Catalytic performance of Mn–Ni mixed oxides hydroxide catalysts in liquid-phase benzyl alcohol oxidation using molecular oxygen
30. Oxidation of ethyl acetate by a high performance nanostructure (Ni, Mn)–Ag/ZSM-5 bimetallic catalysts and development of an artificial neural networks predictive modeling10.1080/10934529.2011.526899 ↗
31. A kinetic study of catalytic combustion of ethyl acetate and benzene in air stream over Cr-HZSM-5 catalyst10.1021/ie020989t ↗
32. Complete oxidation of methyl–ethyl ketone and toluene over supported copper–chromium and cobalt–chromium oxide catalysts
33. Application of spinel-type cobalt chromite as novel catalyst for combustion of chlorinated organic pollutants10.1021/es001098k ↗
34. The effect of CeO2 on the surface and catalytic properties of Pt/CeO2–ZrO2 catalysts for methane dry reforming10.1016/j.apcatb.2007.10.016 ↗
35. Catalytic combustion of C3 hydrocarbons and oxygenates over Mn3O410.1016/S0926-3373(97)00061-1 ↗
36. On the role of acidity in catalytic oxidation10.1016/S0920-5861(96)00088-0 ↗
37. General study of catalytic oxidation of various VOCs over La0.8Sr0.2MnO3+x perovskite catalyst—influence of mixture10.1016/S0926-3373(02)00302-8 ↗