Oxidation Kinetics of Methanol and Propanol by Peroxodisulphate Ion

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

The kinetic of peroxodisulphate ion oxidation reaction of two primary Alcohols, Methanol and Propanol in aqueous solution at 600C and in presence of silver ion as catalyst was determined to study the effect of the chain length in kinetic oxidation of the primary alcohols. Various kinetics runs were carried out by taking appropriate volume of the substrate, catalyst and Peroxodisulphate ion as oxidation agent and thermostated at 600C. At different known time, appropritate volume of sample mixture were added to appropriate volume of potassium iodide in neutral media, the liberated iodine was titrated against standard solution of sodium thiosulphate by using iodometric titration method. The rate constants and order of reactions were determined for both alcohols. The activation energies and some of thermodynamic functions were evaluated for the two alcohols. The order was determined for each component in these study from the evaluated of the initial rates and showed that the orders in the case of methanol were as follows, Methanol follow 1 order, the peroxodisulphate follow 1 order, the silver follow 0.5 order . While in the case of propanol were as follows, Propanol follow 0.8 orders, the peroxodisulphate follow 1 order, and the silver follow 1 order. The values of the activation energies, entropy and enthalpy were evaluated for two alcohols by determination of the rate constant at different temperatures. It was found that the activation energy for methanol = 30.7 kilojoules and for propanol = 17 kilojoules. The value of Enthalpy for Methanol = 27.53 kilojoules and for propanol = 14.3 kilojoules. The value of Entropy for Methanol = -229.5joul and for propanol = -232joul. The result of this study show that there is difference in the value of the order of the catalyst Ag+ in the oxidation kinetics of the two primary alcohols and it is = 0.5 order in the case of Methanol, and it is = 1 order in the case of propanol the differences may be due to the difference in chain length of the two primary alcohols, Methanol have one carbon atom and propanol have three carbon atoms, for this, it is recommended that the effect of the chain length on the oxidation of alcohols must be studied by choosing longer chain alcohols in addition to the short chain one.

روابط وملفات

التعريف والنوع

رقم الوثيقة

f589d895-9752-4c9b-8aef-aaedc29b4d34

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

72266_1.pdf

بيانات النشر

ترجمة العنوان

حركيه اكسده الميثانول والبروبانول بواسطةايون البيرسلفيت

ألقاب المؤلفين

[{"name_ar":"Fathelrahman Abbas Elsheikh","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Myada Emad Elsharani Mohammed Mohammed","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Salih Mohammed Ahmed","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Oxidation Kinetics of Methanol and Propanol by Peroxodisulphate Ion

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

Fathelrahman Abbas Elsheikh, Salih Mohammed Ahmed

الإعداد

Myada Emad Elsharani Mohammed Mohammed

الاقتباسات الببليوغرافية