Dissolved high temperature catalytic oxidation

Sugimura, Y., and Y. Suzuki. 1988. A high temperature catalytic oxidation method for the determination of non-volatile dissolved organic carbon in seawater by direct injection of a liquid sample. Marine Chemistry 41 105-131. 

Solomon CM, Lessard EJ, Keil RG, Foy MS (2003) Characterization of extracellular polymers of Phaeocystis glob-osa and P. antarctica. Mar Ecol Prog Ser 250 81-89 Sugimura Y, Suzuki Y (1988) A high temperature catalytic oxidation method for the determination of non-volatile dissolved organic carbon in seawater by direct injection of a liquid sample. Mar Chem 24 105-131 Sunda WG, Huntsman SA (1995) Iron uptake and growth limitation in oceanic and coastal phytoplankton. Mar Chem 50 189-206... 

Spyres G, Nimmo M, Worsfold PJ, Achterberg EP, and Miller AEJ (2000) Determination of dissolved organic carbon in seawater using high temperature catalytic oxidation techniques. Trac-Trends in Analytical Chemistry 19 498-506. 

Methods for the oxidation of DOC fall into two basic categories, high temperature catalytic oxidation (HTCO) and wet chemical techniques including UV photooxidation. The use of high temperature catalytic oxidation for the conversion of organic carbon into carbon dioxide is described in Chapter 15 of this volume, and the use of a system based on UV photooxidation of dissolved organic carbon is described in the following sections. 

Merriam J., McDowell W.H., and Currie W.S. 1996. A high-temperature catalytic oxidation technique for determining total dissolved nitrogen. /. Soil Sci. Soc. Am. 60 1050-1055. 

Tt is significant that hydrogenation, dehydrogenation, oxidation and dehydration catalysts are "solids on which the relevant common reactant is adsorbed or dissolved. They are solids which display defect properties, i.e. their composition is dependent on the vapour pressure of the reactant at high temperatures and on history at low temperatures. The part played by the equilibrium defects in various catalytic processes is exemplified in Table 6. 

DPP was initially developed for the preparation of thin films and was lafer adapted for the preparation of materials in the powder form. DPP consists of dissolving mefal salts in the presence of a hydroxyl acid (cifric acid) and a polyhydroxylic alcohol (ethylene glycol), to obtain a solution with good metal distribution consisting of a resin of the precursor metal. To obtain the catalyst, each metal is stoichiometrically mixed with carbon Vulcan XC-72 or any other support and fired at high temperatures e.g., 300°C-400°C. The major advantage of this route is the attainment of robusf catalysfs wifh experimental composition close to the nominal one. This method has been employed in the synthesis of a series of PtSn/C materials [19-21,27]. Nevertheless, proper control of particle morphology and metal distribution must be improved, in order to obtain better catalytic activity for ethanol electro-oxidation, which is currently under 1.0 A Spt ... 

Praseodymium tri-iodide, Prl3, as the starting material for reduction reactions, might be easily produced by the oxidation of praseodymium metal with elemental iodine [17]. With catalytic amounts of hydrogen dissolved in praseodymium metal powder, the reaction temperature can be as low as 230 °C [18]. Sublimation in high vacuum in tantalum tubes yields pure Prl3. 

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