COMBINED KINETIC RESPONSE OF TWO SUBSTRATES WITH SIMILAR REACTIVE PATTERNS
| dc.contributor.author | Dana Maria SABOU | |
| dc.contributor.author | Alexandra Ana CSAVDÁRI | |
| dc.date.accessioned | 2024-10-16T11:26:09Z | |
| dc.date.issued | 2017-03-30 | |
| dc.description | STUDIA UBB CHEMIA, LXII, 1, 2017 (p. 19-33), DOI:10.24193/subbchem.2017.1.02 Dana Maria SABOU Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania, dana.sabou@ubbcluj.ro https://orcid.org/0000-0001-6199-6081 Alexandra Ana CSAVDÁRI Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University of Cluj-Napoca, Romania. *Corresponding author: alexandra.csavdari@ubbcluj.ro https://orcid.org/0000-0003-4321-5610 | |
| dc.description.abstract | The behaviour towards simultaneous oxidation by Cr(VI) in acidic environment of mixtures consisting of two structurally closely related thioethers (S-methylcysteine and DL-methionine) was tested, at 0.085 mol·l-1 H+ and 298 ± 0.1 K. The kinetic and mechanistic patterns of the two substrates when oxidized separately were already known and very similar. Based on that knowledge, the individual kinetic parameters (rate and equilibrium constants) were first computed. Theoretical predictive models for the value of the observed rate constant of a mixture, based on the kinetic data from non-mixtures, are compared with experimental findings and subsequently an empirical calibration surface obtained from all experiments is discussed. Due to differences in the kinetic parameters of the two reactions, in all models the obtained surfaces are asymmetrical, and this opens the possibility to univocally determine the concentrations of both thioethers, without separation. | |
| dc.description.sponsorship | The funding of the Romanian Government through UEFISCDI project “Pro-active operation of cascade reservoirs in extreme conditions (floods and droughts) using a Comprehensive Decision Support Systems (CDSS). Case study: Jijia catchment”, PN-II-PT-PCCA-2011-3-3.2-0344, contract 15/2012 is gratefully acknowledged. The authors would also like to thank Assoc. Prof. Dr. Eng. Árpád Imre-Lucaci for developing the MATLAB program employed to determine the bi parameters of the empirical equation (11) and Ph.D. Erzsébet-Sára Bogya for assistance with collecting part of the experimental data. | |
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| dc.identifier.issn | 1224-7154 | |
| dc.identifier.issn | (online): 2065-9520 | |
| dc.identifier.uri | http://dspace.chem.ubbcluj.ro/handle/20.500.14637/7 | |
| dc.language.iso | en | |
| dc.publisher | STUDIA UBB CHEMIA. Published by Babeş-Bolyai University | |
| dc.relation.ispartofseries | STUDIA UBB CHEMIA, Volume 62, No. 1, 2017, p. 19-33 | |
| dc.subject | chromium VI oxidation | |
| dc.subject | DL-methionine | |
| dc.subject | S-methylcysteine | |
| dc.subject | combined kinetic response | |
| dc.subject | kinetic modeling | |
| dc.title | COMBINED KINETIC RESPONSE OF TWO SUBSTRATES WITH SIMILAR REACTIVE PATTERNS | |
| dc.type | Article |