Two simple, accurate and precise methods are described for the determination of propranolol hydrochloride with cerium(IV) sulphate. The titrimetric method is based on the oxidation of the drug by a known excess amount of cerium(IV) sulphate and back titration of the unconsumed oxidant with ammonium ferrous sulphate. In the spectrophotometric method, the unreacted cerium(IV) sulphate is treated ...

The increasing use of engineered nanoparticles (ENPs) in consumer products has led to their increased presence natural water systems. Here, we present a critical overview the studies that analyzed fate and transport behavior ENPs using real environmental samples. We focused on cerium dioxide, titanium silver, carbon nanotubes, zinc oxide, widely used products. Under field scale settings, transf...

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Aliphatic and aromatic aldehydes were converted into the corresponding pinacoles by using different cerium catalysts. Ce(OtBu)3 proved to be superior over other cerium(III) catalysts. Especially the highly diastereoselective pinacol coupling of sterically non demanding aldehydes such as hexanal is remarkable.

4 ABSTRACT: In this work, an Arrhenius-based model for the 5 high-temperature reduction and oxidation of CeO2 is 6 developed. The model is shown to agree well with both 7 literature data for the equilibrium oxygen vacancy concen8 tration and novel experimental kinetics of oxidation and 9 reduction obtained by the authors. The form of the Arrhenius 10 rate equation was determined from the proper...

The need for high purity hydrogen for use in lowtemperature fuel cells has led to a resurgence of interest in the purification of hydrogen derived from reforming carbon -based feedstocks. A common process used to reduce the carbon monoxide concentration of the reformate gas to an acceptable level is the water gas shift reaction (WGSR). In the reaction, carbon monoxide is combined with water to ...

Correction for 'Single-molecule magnet behaviour in polynuclear assembly of trivalent cerium ions with polyoxomolybdates' by A. Ben Khélifa, et al., Dalton Trans., 2015, 44, 16458-16464.

An isopolyoxomolybdate-based POM is coordinated to trivalent cerium ions to afford a hybrid complex namely, [Ce(dmso)8][Ce(η2-NO3)2(dmso)4(α-Mo8O26)0.5][Mo6O19]. The original electrostatic environment created around the Ce(III) by its coordination to the isopolyoxomolybdate core induces complex single-molecule magnet behavior.

Ultraviolet (UV) miniature cerium fluoride lasers have been demonstrated using a low cost, frequency-quadrupled microchip Nd:YAG pump laser. The use of miniature laser cavities was shown to significantly improve the laser performance in the low pump power region. We have achieved slope efficiencies up to 70% and pump thresholds as low as 100 nJ. Continuous tuning from 306 nm to 338 nm was achie...

a pvc-based membrane containing cerium phosphate was developed. unlike the cerium phosphate itself that acts as a cation exchanger, the membrane exhibited anion-exchange properties. therefore, the utility of this compound as a sensory element for detection of molybdate ions was pursued. the response of molybdate selective electrode based on this membrane was perfectly linear in the concentratio...