DSpace Repository

Kinetics of Oxidation of Acetone and Acetophenone by Persulphate Ion in presence of Silver Ion as a catalyst

Show simple item record

dc.contributor.author MADANI, MISON MUSTAFA HASSAN
dc.date.accessioned 2018-10-22T08:57:14Z
dc.date.available 2018-10-22T08:57:14Z
dc.date.issued 2014-01-13
dc.identifier.uri http://repo.uofg.edu.sd/handle/123456789/2509
dc.description A Dissertation Submitted to the University of Gezira in Partial Fulfillment of the Requirements for the Award of the Degree of Master of Science in Chemistry Department of Applied Chemistry and Chemical Technology Faculty of Engineering and Technolo January, 2014 en_US
dc.description.abstract The ketones are relatively hard to oxidize at ordinary temperature, but they do undergo oxidation reaction at extreme temperatures. The oxidation of ketones, Investigated, to study the oxidation reaction kinetics of (acetone and acetophenone) by peroxodisulphate, to find the order and effect of the structure of the two compounds and determine the activation energy, the entropy, the enthalpy and free energy of activation. The kinetics runs were carried out by potassium peroxodisulphate ion in aqueous sulfuric acid medium in presence of silver nitrate as catalyst in 70oC and there were variable concentrations of peroxodisulphate and silver ion and a plot of variable concentration of titre against time were established. From the curve, the initial rate for each concentration was obtained and plotted against the log of [potassium peroxodisulphate] and secondly versus [silver]. From the slope of the straight line the order of reactions were determined, the reactions obeyed first –order for each. on the other hand the concentration of substrates were variable while the concentrations of silver and potassium peroxodisulphate were constant and a plot of concentrations of titre against time was established, from the curve initial rate for each concentration was obtained and plotted against the log of [substrate] . A straight line was obtained and from slope determined the order of reactions for substrate. The reactions obeyed first –order for acetone and half- order for acetophenone .the activation of energy [26kJ] for acetone and [93Kl] for acetophenone ,and the enthalpy of activation to acetone [23.15Kj] and [90.19Kj ] for acetophenone ,entropy of activation [-235.5J] for acetone and [-247J] for acetophenone and free energy of activation for acetone[79.5Kj] and [83.4Kj]for acetophenone.The kinetics have been evaluated by determining the rate constants at different temperatures.Differences may be due to benzene ring acetophenone. For this, it is recommended that the effect of the benzene ring on the oxidation of ketones must be studied by choosing aliphatic ketone. The products of the reaction have been identified as carboxylic acid. en_US
dc.description.sponsorship Fathelrahman Abbas El Sheikh ( Main Supervisor ) Mohamed Osman Babiker ( Co-supervisor) en_US
dc.language.iso en en_US
dc.publisher University of Gezira en_US
dc.subject Alvatism and aromatics en_US
dc.subject Chemical formula en_US
dc.subject Hydrochloric acid en_US
dc.title Kinetics of Oxidation of Acetone and Acetophenone by Persulphate Ion in presence of Silver Ion as a catalyst en_US
dc.type Thesis en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account