Add time:09/07/2019 Source:sciencedirect.com
We have examined quantum yields for chlorine production from solar photolysis of acidic chloride solutions containing the hexachloroiridate (IV) complex, IrCl62−. Previous investigators found good quantum yields in the middle UV (Φ(Cl2) = 0.128 at 254 nm), but the yield was found to decrease in the near UV, falling to zero at wavelengths above 488 nm. Under solar photolysis, we find nearly zero yields in closed or static systems. However, when the chlorine produced is swept out with an inert gas, Φ(Cl2) under solar photolysis is approximately 0.0018, for a solution containing 0.001 M lrCl62− in 6 M HCl solution. Improvements in the quantum yield result from increasing the IrCl62− concentration from 0.001 M to 0.1 M or higher and from increasing the Cl− concentration from 1 M to 5 M; solutions were acidic in all cases. Using a solution of 0.025 M IrCl62−, 0.5 M HCl, and 5 M NaCl, Φ(Cl2) = 0.0070 was found. Further improvement in the yield is achieved if the hexachloroiridate (III) produced is simultaneously oxidized back to hexachloroiridate (IV) while photolysis is in progress. Under the best conditions of simultaneous photolysis and electrolysis, a chlorine quantum yield of 0.080 is found for solar light between UV cutoff (ca. 320 nm) and the maximum actinic wavelength of the IrCl62−/Cl− system, at 488 nm.
We also recommend Trading Suppliers and Manufacturers of SODIUM HEXACHLOROIRIDATE(III) (cas 15702-05-3). Pls Click Website Link as below: cas 15702-05-3 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View