PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+
In this study, tetramethylethylenedimine copper(II) complex (Cu(tmen)Cl2) was synthesized and natural clay smectite and synthetic Dowex-50WX8 resin containing Cu(tmen)(OH)(OH2)+ were prepared via ion exchange process in aqueous solution. Dowex- and smectite-supported Cu(tmen)(OH)(OH2)+ were used as...
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doaj-8ed75a1a92d0442299287b3096c1eeab2020-11-24T20:55:11ZengAnadolu UniversityAnadolu University Journal of Science and Technology. A : Applied Sciences and Engineering1302-31602146-02052017-09-0118372073210.18038/aubtda.31808726PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+Murat ErdemIn this study, tetramethylethylenedimine copper(II) complex (Cu(tmen)Cl2) was synthesized and natural clay smectite and synthetic Dowex-50WX8 resin containing Cu(tmen)(OH)(OH2)+ were prepared via ion exchange process in aqueous solution. Dowex- and smectite-supported Cu(tmen)(OH)(OH2)+ were used as a promoter in the hydrolysis reactions of organophosphate compounds of diethyl-p-nitrophenyl phosphate and p-nitrophenyl diphenyl phosphate at different pH values. Scanning electron microscope attached with energy dispersive X-ray dedector and surface area analyzer were used for the characterization of the promoters. The efficiency of these promoters was evaluated in accordance with pseudo-first-order and Michaelis-Menten enzyme kinetic models. The amount of copper(II) complex in Dowex-supported promoter was higher than that of smectite-supported one (1.36 mmol/g and 0.88 mmol/g, respectively) and the higher efficiency was obtained when Dowex-supported promoter was employed in all of the hydrolysis reactions. 222 and 114-fold increasing in pseudo-first-order rate constants compared to the reactions without promoter were observed for the hydrolysis of diethyl-p-nitrophenyl phosphate at pH 8.0 in the presence of Dowex-supported and smectite-supported promoters.http://dergipark.gov.tr/aubtda/issue/30003/318087?publisher=anadoluDowex-50WX8SmectiteTetramethylethylenedimine copper(II) complexDiethyl-p-nitrophenyl phosphate |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Murat Erdem |
spellingShingle |
Murat Erdem PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+ Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering Dowex-50WX8 Smectite Tetramethylethylenedimine copper(II) complex Diethyl-p-nitrophenyl phosphate |
author_facet |
Murat Erdem |
author_sort |
Murat Erdem |
title |
PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+ |
title_short |
PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+ |
title_full |
PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+ |
title_fullStr |
PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+ |
title_full_unstemmed |
PROMOTED HYDROLYSIS OF SOME ORGANOPHOSPHATE ESTERS USING SUPPORTED [Cu(tmen)OH(OH2)]+ |
title_sort |
promoted hydrolysis of some organophosphate esters using supported [cu(tmen)oh(oh2)]+ |
publisher |
Anadolu University |
series |
Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering |
issn |
1302-3160 2146-0205 |
publishDate |
2017-09-01 |
description |
In
this study, tetramethylethylenedimine copper(II) complex (Cu(tmen)Cl2)
was synthesized and natural clay smectite and synthetic Dowex-50WX8
resin containing Cu(tmen)(OH)(OH2)+
were prepared via ion exchange process in aqueous solution. Dowex- and smectite-supported
Cu(tmen)(OH)(OH2)+ were used as a promoter in the
hydrolysis reactions of organophosphate compounds of diethyl-p-nitrophenyl
phosphate and p-nitrophenyl diphenyl phosphate at different pH values. Scanning electron microscope attached
with energy dispersive X-ray dedector and surface area analyzer were used for
the characterization of the promoters. The efficiency of these promoters was
evaluated in accordance with pseudo-first-order and Michaelis-Menten enzyme
kinetic models. The amount of copper(II) complex in Dowex-supported promoter was
higher than that of smectite-supported one (1.36 mmol/g and 0.88 mmol/g, respectively) and the higher efficiency was
obtained when Dowex-supported promoter was employed in all of the hydrolysis
reactions. 222 and 114-fold increasing in pseudo-first-order rate constants
compared to the reactions without promoter were observed for the hydrolysis of diethyl-p-nitrophenyl
phosphate at pH 8.0 in the presence of Dowex-supported and smectite-supported promoters. |
topic |
Dowex-50WX8 Smectite Tetramethylethylenedimine copper(II) complex Diethyl-p-nitrophenyl phosphate |
url |
http://dergipark.gov.tr/aubtda/issue/30003/318087?publisher=anadolu |
work_keys_str_mv |
AT muraterdem promotedhydrolysisofsomeorganophosphateestersusingsupportedcutmenohoh2 |
_version_ |
1716792306912198656 |