Reduction of nitrous oxide

Q. Zhu, R. M. van Teeffelen, R. A van Santen, and E. J. M. Hensen, Effect of high-temperature treatment on Fe/ZSM-5 prepared by chemical vapor deposition of FeCls 11. Nitrous oxide decomposition, selective oxidation of benzene to phenol, selective reduction of nitrous oxide by MO-butane, J. Catal. 221, 575—583 (2004)... 

The electrocatalytic reduction of nitrous oxide to dinitrogen has been achieved at a mercury electrode using Ni(II) complexes of macrocyclic polyamines [355]. 

Schwefer, M., Maurer, R., and Groves, M., Reduction of Nitrous Oxide Emissions from Nitric Acid Plants, Prepared for Presentation at Nitrogen 2000, Vienna, Austria, March, 2000. 

Methionine synthetase also catalyzes the reduction of nitrous oxide to nitrogen and in so doing generates a hydroxyl radical that results in irreversible inactivation of the enzyme (Frasca et al., 1986). Inactivation of methionine synthetase by nitrous oxide has been used as an acute model of vitamin B12... 

Finally the flow cell described above has been used to monitor isoflurane in the presence and absence of oxygen (using the AQ scavenger method) [SI]- The response time to changes in gas concentration is less than ten seconds and it is suggested that this could be easily improved. Furthermore the mediated reductions of nitrous oxide and isoflurane are considered to be independent of each other. Thus it is also suggested that the sensor could be used to monitor both gases provided there was an independent measurement of one of them available. This however, remains to be seen. 

Hansen, K.K (2010). Electrochemical Reduction of Nitrous Oxide on Lai-xSrxFeOs Perovskites. Materials Research Bulletin, Vol. 45, No. 9, (May 2010), pp. 1334-1337, ISSN 0025-5408... 

Gutierrez de Dios FJ, Gomez R, Fehu JM. Preparation and electtocatal5dic activity of Rh adlayers on Pt(l 0 0) electtodes reduction of nitrous oxide. Electtochem Commun 2001 3 659-64. 

Catalytic conversion of off-gases, e.g., the reduction of nitrous oxide from nitric acid plants, with anunonia and the use of "three way" catalyst in automobile exhausts. 

Nitric oxide is made commercially by oxidation of ammonia above 500°C in the presence of platinum, or by reduction of nitrous acid with ferrous sulphate or feiTous halides. The physical ... 

Chianese, D. S., Rotz, C. A., and Richard, T. L. (2009d). Simulation of nitrous oxide emissions from dairy farms to assess greenhouse gas reduction strategies. Trans. ASABE 52, 1325-1335. 

Martin, J.A., Yates, M., Avila, P. et al. (2007) Nitrous oxide formation in low temperature selective catalytic reduction of nitrogen oxides with V205/Ti02 catalysts, Appl. Catal. B... 

Sigman et al. [134] have described a bacterial method for measuring the isotopic composition of seawater nitrate at the natural-abundance level. The method is based on the analysis of nitrous oxide gas (N2O) produced quantitatively from nitrate by denitrifying bacteria. The classical denitrification pathway consists of the stepwise reduction of nitrate (NOp to nitrite (N02), nitric oxide (NO), nitrous oxide (N2O), and dinitrogen (N2) ... 

Adsorption of nitric and sulfuric acids on ice particles provides the sol of the nitrating mixture. An important catalyst of aromatic nitration, nitrous acid, is typical for polluted atmospheres. Combustion sources contribute to air pollution via soot and NO emissions. The observed formation of HNO2 results from the reduction of nitrogen oxides in the presence of water by C—O and C—H groups in soot (Ammann et al. 1998). As seen, gas-phase nitration is important ecologically. 

Nitrous oxide, which is also called laughing gas, is a weak anesthetic. It is usually used together with hypnotics, analgesics, and muscle relaxants. It is sometimes called an ideal anesthetic because of the absence of any kind of suppressive influence on respiration. However, according to the latest information, use of nitrous oxide for more than 2 h is counterproductive since it causes a severe reduction of methionine synthesis, which in turn can cause a severe decrease in the level of vitamin Bj2 with all its subsequent consequences. 

Balderston, W. L., Sherr, B., and Payne, W. J. (1976). Blockage by acetylene of nitrous oxide reduction in Pseudomonas perfectomarinus. Appl. Environ. Microbiol. 31, 504-508. 

Ye, R. W., Toro-Suarez, 1., Tiedje, J. M., and Averill, B. A. (1991). H2 0 isotope exchange studies on the mechanism of reduction of nitric oxide and nitrite to nitrous oxide by denitrifying bacteria. J. Biol. Chem. 266, 12848-12851. 

Yoshinari, T., and Knowles, R. (1976). Acetylene inhibition of nitrous oxide reduction by denitrifying bacteria. Biochem. Biophys. Res. Commun. 69, 705-710. 

Sevoflurane has a dose-dependent effect on cerebral blood flow and intracranial pressure cerebral autoregulation is preserved (this is not the case with isoflurane). During hypocarbia, in the absence of nitrous oxide, 1 MAC does not increase intracranial pressure (ICP). It reduces the cerebral metabolic rate for oxygen (CMR02) by approximately 50% at concentrations approaching 2 MAC. This is similar to the reduction observed during isoflurane anaesthesia. 

There is, however, some loss of the valuable nitrous gases, necessitating the introduction of small quantities of nitric acid at or before the Glover tower or into the chamber itself (see before) the loss is probably due mainly to the reduction of the oxides to nitrous oxide and even nitrogen, which are not absorbed in the Gay-Lussac tower.1... 

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