Catalytic ammonia oxidation to nitrogen (I) oxide

Catalytic Wet Oxidation of Ammonia Solution with Platinum- Palladium-rhodium Composite Oxide Catalyst

This study adopted high concentration aqueous solutions of ammonia for use in catalytic liquid-phase oxidation in a trickle-bed reactor with platinum-group metals (platinum-palladiumrhodium), prepared by the co-precipitation of H2PtCl6, Pd(NO3)3 and Rh(NO3)3. The experimental results revealed that a minimal amount of ammonia was removed from the solution by wet oxidation in the absence of any c...

Heterogeneous photoreduction of nitrogen to ammonia on tungsten oxide

Catalytic Oxidation of 4-Methylpyridine on Modified Vanadium Oxide Catalysts

The reaction of gas-phase oxidation of 4-methylpyridine on individual V2O5, binary and ternary vanadium-oxide catalysts was studied. These catalysts were modified by additives of SnO2 and TiO2. It was found that modifying V2O5 leads to increase the activity of binary contacts. Upon transition from binary V2O5<...

Spotlight: Catalytic vinylogous anomeric based oxidation (Part I)

Stereoelectronic effects is a bridge between structure and reactivity [1]. Anomeric effect plays an important role in the domain of stereoelectronic interaction and can be used for description of several unusual phenomena. Intramolecular negative hyperconjugation is also known as anomeric effect [2]. In anomeric effect, both donor (lone pairs) and acceptor groups (electronegative elements) coex...

Comparison of Nitrogen Oxide Metabolism among Diverse Ammonia-Oxidizing Bacteria

Ammonia-oxidizing bacteria (AOB) have well characterized genes that encode and express nitrite reductases (NIR) and nitric oxide reductases (NOR). However, the connection between presence or absence of these and other genes for nitrogen transformations with the physiological production of nitric oxide (NO) and nitrous oxide (N2O) has not been tested across AOB isolated from various trophic stat...