Manganese oxides active

Hong MS, Lee SH, Kim SW. Use of KC1 aqueous electrolyte for 2 V manganese oxide/activated carbon hybrid capacitor. Electrochemical and solid state letters 2002 5(10) A227-A230. 

FIGURE 8.36 Cyclic voltammograms on an optimized asymmetric manganese oxide/activated carbon capacitor in 2mol L 1 KN03 electrolyte. (Adapted from Khomenko, V., et al.,./. Power Sources, 153, 183, 2006.)... 

Catalysts with a manganese oxide active phase are more efficient than the ones with the silver active phase. In Figitre 2, the maximum temperature of 180°C is slightly below the maximum adiabatic maximum temperature of around 220°C, indicating a good catalytic behaviour. The ignition delay depends on the starting temperature of the system. 

Khomenko, V., E. Raymundo-Pinero, and F. Beguin. 2006. Optimisation of an asymmetric manganese oxide/activated carbon capacitor working at 2 V in aqueous medium. 

Manganese ions enzyme activators, 6,578 probes, 6,563 RNA polymerases activation, 6, 585 transport microbes, 6, 569 plants, 6, 572 Manganese oxide colloidal... 

An efficient oxidation catalyst, OMS-1 (octahedral mol. sieve), was prepared by microwave heating of a family of layered and tunnel-structured manganese oxide materials. These materials are known to interact strongly with microwave radiation, and thus pronounced effects on the microstructure were expected. Their catalytic activity was tested in the oxidative dehydrogenation of ethylbenzene to styrene [25]. 

In the preparation of microporous manganese oxide materials different chemical properties were observed for the microwave and thermal preparations. In the conversion of ethylbenzene to styrene the activity and selectivity of the materials was different [26]. 

The scavenging ability toward O2 can also be measured by using electron spin resonance (ESR) spectrometry. The 02 anion is trapped with 5,5-dimethyl-1-pyrroline TV-oxidc (DMPO), and the resultant DMPO-OH adduct is detected by ESR using manganese oxide as internal standard. Noda and others (1997) used this technique to evaluate antioxidant activities of pomegranate fruit extract and its anthocyanidins (delphinidin, cyanidin, and pelargonidin). 

Econocat A process for deodorizing gases by catalytic oxidation over manganese dioxide activated with other metals. Developed and sold by Cortaulds Engineering. 

Figure 1.1 XRD patterns for different manganese oxides before and after pretreatment in H2 at 420°C [17]. The top three traces correspond to the original Mn02, Mn2Os, and Mn304 solids used in these experiments, while the bottom three were obtained after H2 treatment. It can be seen here that the catalysts are all reduced to the same MnO phase regardless of the nature of the starting material. It was inferred that MnO is the actual working catalyst in all cases, hence the similarity in methyl benzoate hydrogenation activity obtained with all these MnO solids. (Reproduced with permission from Elsevier.)...

---