THE ROLE OF METAL (HYDR) OXIDES IN CATALYZING THE HYDROLYSIS OF QUINALPHOS
| العنوان: | THE ROLE OF METAL (HYDR) OXIDES IN CATALYZING THE HYDROLYSIS OF QUINALPHOS |
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| المؤلفون: | Gary W. vanLoon, Erwin Buncel, Abdelhamid A. Esbata |
| المصدر: | Scientific Journal of Applied Sciences of Sabratha University. :13-30 |
| بيانات النشر: | Sabratha University, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Metal, chemistry.chemical_compound, Hydrolysis, Adsorption, chemistry, visual_art, visual_art.visual_art_medium, Quinalphos, Nuclear chemistry |
| الوصف: | Catalysis of the hydrolysis of the organ phosphorus compound, quinalphos (Q) by (hydr) oxides was studied at pH 4.0, 7.0, and 10.0, and at 25oC. FeOOH and Al(OH)3 were the used solids for this research. Catalysis of quinalphos was followed by determining the disappearance of Q and the appearance of 2-hydroxyquinoxaline (HQ) product in the absence and presence of (hydr) oxides using HPLC with UV detector. Under these conditions, both hydroxides (FeOOH and Al(OH)3) have catalyzed the hydrolysis of quinalphos. In this study, FeOOH was found to be the best catalyst at the used pHs. It is apparent that at pH 10.0, Kobs for disappearance of Q is almost equal to that for the appearance of HQ, which indicates that hydrolysis of Q at pH 10.0 follows SN2 (P) pathway. On the other hand, at pH 4.0 and 7.0, hydrolysis of Q may have followed two pathways, SN2 (P) and SN2 (C), as Kobs for producing HQ is smaller than that for loss of Q. |
| تدمد: | 2708-7301 2708-7298 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::8ad12d4d0317eb8d59f2071c705b01a6 https://doi.org/10.47891/sabujas.v0i0.13-30 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........8ad12d4d0317eb8d59f2071c705b01a6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 27087301 27087298 |
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