Nitric oxide silica

The NO spectrum has now been studied for the molecule adsorbed on ZnO, ZnS (18), 7-AI2O3, silica-alumina, silica-magnesia (20), an A-type zeolite (97), H-mordenite (98), and a variety of Y-type zeolites including NaY (19), MgY, CaY, BaY, SrY (81), decationated-Y (19), ScY, LaY, and A1HY (99). The nitric oxide molecule has mainly been used as a... 

Effect of a Novel Nitric Oxide Calcination on the Catalytic Behavior of Silica-Supported Cobalt Catalysts during Fischer-Tropsch Synthesis, and Impact on Performance Parameters... 

Recently, it has been reported that a novel calcination procedure relying on nitric oxide gas in lieu of air also results in smaller cobalt crystallites over silica supports.15 17 The idea is to use a less oxidative gas to prevent rapid decomposition of the nitrate precursor during thermal nitrate decomposition, which has been observed when 02 is present.17 As a result, the mobility of the precursor on the oxide carrier surface is hindered, resulting in a smaller average Co oxide cluster... 

Results of Hydrogen Chemisorption/Pulse Reoxidation Measurements over Activated Silica-Supported Cobalt Catalysts Calcined at 350°C Using either Flowing Air or 5% Nitric Oxide in Nitrogen... 

The book focuses on three main themes catalyst preparation and activation, reaction mechanism, and process-related topics. A panel of expert contributors discusses synthesis of catalysts, carbon nanomaterials, nitric oxide calcinations, the influence of carbon, catalytic performance issues, chelating agents, and Cu and alkali promoters. They also explore Co/silica catalysts, thermodynamic control, the Two Alpha model, co-feeding experiments, internal diffusion limitations. Fe-LTFT selectivity, and the effect of co-fed water. Lastly, the book examines cross-flow filtration, kinetic studies, reduction of CO emissions, syncrude, and low-temperature water-gas shift. 

Srivastava, K. D. et al. Crucial role of interleukin-1 beta and nitric oxide synthase in silica-induced inflammation and apoptosis in mice. Am. J. Respir. Crit Care Med 165, 527, 2002. 

A method involving SPE was developed for the determination of ten A-nitroso amino acids in cured meat products. These compounds were derivatized with diazomethane followed by O-acylation of hydroxyl groups with acetic anhydride-pyridine reagent. The methyl esters and their acylated derivatives were separated by GC on a DB-5 fused silica capillary column and quantified with a TEA-CLD specific for the nitric oxide derived from the thermal denitrosation of nitrosamines recovery exceeded 75% at the 10 ppb level579. 

Photooxidation of chlorobenzene in air containing nitric oxide in a Pyrex glass vessel and a quartz vessel gave 3-chloronitrobenzene, 2-chloro-6-nitrophenol, 2-chloro-4-nitrophenol, 4-chloro-2-nitro-phenol, 4-nitrophenol, 3-chloro-4-nitrophenol, 3-chloro-6-nitrophenol, and 3-chloro-2-nitrophenol (Kanno and Nojima, 1979). A carbon dioxide yield of 18.5% was achieved when chlorobenzene adsorbed on silica gel was irradiated with light (A. >290 nm) for 17 h. The sunlight irradiation of chlorobenzene (20 g) in a 100-mL borosilicate glass-stoppered Erlenmeyer flask for 28 d yielded 1,060 ppm monochlorobiphenyl (Uyeta et al., 1976). 

Shin JH, Metzger SK, Schoenfisch MH. Synthesis of nitric oxide-releasing silica nanoparticles. Journal of the American Chemical Society 2007, 129, 4612 1619. 

Shin JH, Schoenfisch MH. Inorganic/organic hybrid silica nanoparticles as a nitric oxide delivery scaffold. Chemical Materials 2008, 20, 239-249. 

Frost MC, Meyerhoff ME. Controlled photoinitiated release of nitric oxide from polymer films containing. V-nitroso-V-acctyl-dl-penicillamine derivatized fumed silica filler. J Am Chem Soc 2004 126 1348-9. 

Wisconsin A thermal process for fixing atmospheric nitrogen. Air is heated to over 2,000°C by contact with a bed of magnesia pebbles, and then cooled rapidly by contact with a bed of cold pebbles. The resulting air, containing 1 to 2% of nitric oxide, is passed through beds of silica gel... 

Nitric oxide is the Matheson Gas commercial product from which NO2 is removed by passage through a silica-gel trap at —78 [E. E. Hughes, J. Chem. Phys., 35,1531 (1961)1. 

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