Search results for "Kinetic constant"

showing 3 items of 3 documents

eta1-Allypalladium complexes with tridentate PNP’ ligand for the assembly of modified Screen Printed Electrodes: an electrochemical study.

2015

Specific Pd-based organometallic complex, in particular the [Pd(η1-CH2–CH=CH2)(P–N–P’)]BF4 was used for the assembly of chemically modified Screen Printed Electrodes (SPEs) and their electrochemical reactivity was also investigated. For this purpose potassium ferricyanide, hexaammineruthenium(III) chloride, sodium hexachloroiridate-(III) hydrate, ascorbic acid (AA), uric acid (UA), acetaminophen (Ac), guanine (G) and adenine (A) were used to study the electron-transfer processes, which occurred at modified SPEs, fabricated by using the [Pd(η1-CH2–CH=CH2)(P–N–P’)]BF4, applying the drop casting procedure. Interesting results were obtained in the case of the guanine (G) quantitative detection,…

Detection limitElectrocatalysis towards guanine/GP-N-P complexesGuanineAnalytical chemistryPd center dot P-N-P complexesElectrochemistryAscorbic acidHeterogeneous electron-transfer kinetic constantsAnalytical Chemistry: Pdchemistry.chemical_compoundPotassium ferricyanidechemistrychemically modified SPEsElectrodeElectrochemistryReactivity (chemistry)Settore CHIM/01 - Chimica Analitica: Pd; P-N-P complexes; chemically modified SPEs; Electrochemistry; Heterogeneous electron-transfer kinetic constants electro-catalysis towards nucleic acidsHydrateNuclear chemistryelectro-catalysis towards nucleic acids
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BIOALGA reactor: preliminary studies for heavy metals removal

2002

Abstract Microalgae have a high affinity for polyvalent metals, for that reason they could be used to reduce the concentration of heavy metals present in water and wastewater. In the present work an evaluation of a rotary biofilm reactor for algae immobilization (BIOALGA) with the subject of heavy metal removal was investigated. The BIOALGA reactor consisted of a pilot scale model that was operated with synthetic wastewater with an initial concentration of 3000 μg/l of cobalt ion. Scenedesmus obliquus was immobilized in the reactor, which was operated in batch mode for a period of 20 days. The rotary velocity used, 2 rpm, was constant during the experiment. A maximum removal of cobalt ion o…

Environmental EngineeringChromatographyPeriod (periodic table)ChemistryInorganic chemistryBiomedical EngineeringBioengineeringHeavy metalsMetalWastewaterScenedesmus obliquusvisual_artBatch processingvisual_art.visual_art_mediumCobalt ionsKinetic constantBiotechnologyBiochemical Engineering Journal
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Hydrocracking ofn-heptane with a NiO-MoO3/HYUS zeolite as catalyst. Kinetic study

1988

The hydrocracking of n-heptane has been carried out in a fixed bed reactor at 2.45 MPa pressure and with a H2/n-heptane molar ratio of 5.0 using a 4 wt% NiO - 8 wt% MO3/HYUS zeolite as a catalyst. The W/F10 ratio was varied between 75.3 and 1624 kg · s/kmol at different reaction temperatures: 573, 588, 603 and 623 K. The kinetics of the reaction has been studied by two different procedures due to the slight deactivation of the catalyst. One of them uses the conversion and yield values extrapolated at time on stream to zero and the other uses a kinetic equation where the deactivation of the catalyst has been included. The experimental data were fit well by a pseudo-first order kinetic equati…

Heptanechemistry.chemical_compoundchemistryStereochemistryGeneral Chemical EngineeringYield (chemistry)Non-blocking I/OPhysical chemistryKinetic constantActivation energyKinetic energyZeoliteCatalysisThe Canadian Journal of Chemical Engineering
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