عنوان المقالة: Influence of Cationic Surfactant (TTAB) on the Rate of Dipeptide (Gly-D-Asp) Ninhydrin Reaction in Absence and Presence of Organic Solvents
د. عادل أحمد محمد سعيد | Dr. Adel Ahmed Mohammed Seaad | 13956
- نوع النشر
- مؤتمر علمي
- المؤلفون بالعربي
- المؤلفون بالإنجليزي
- Mohd. Akram • Adel A. M. Saeed
- الملخص الانجليزي
- Surfactants are widely used in our daily life either directly in household and personal care products or indirectly in the industrial processes. The kinetics of the interaction of glycyl-DL-aspartic acid (Gly-DL-Asp) with ninhydrin has been investigated spectrophotometrically in aqueous and organic-solvent media in the absence and presence of cationic surfactant of tetradecyltrimethylammonium bromide (TTAB). The study was carried out under different experimental conditions. The first and fractional order-rate were observed for [Gly-DL-Asp] and [ninhydrin], respectively. The reaction was enhanced about fourfold by TTAB micelles. The effect of organic solvents was studied at a constant concentration of TTAB and showed an increase in the absorbance as well as the rate constant for the formation of product (Ruhemann's purple). The results obtained in micellar media are treated quantitatively in terms of pseudo-phase and Piszkiewicz cooperativity models. The Arrhenius and Eyring equations are valid for the reaction over the range of temperatures used and different activation parameters (Ea, ∆H#, ∆S#, and ∆G#) have been evaluated. ICCIS 2015 : International Conference on Chemical Industry and Science
- تاريخ النشر
- 27/01/2015
- الناشر
- World Academy of Science, Engineering and Technology
- رقم المجلد
- 9
- رقم العدد
- 1
- رابط الملف
- تحميل (1 مرات التحميل)
- رابط خارجي
- https://www.waset.org/abstracts/18950
- الكلمات المفتاحية
- glycyl-DL-aspartic acid, ninhydrin, organic solvents, TTAB