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Register a new userElectrolytic plating of Cadmium with Maleic Acid
الطلاء الكهربائي بالكادميوم بوجود حمض الماليئيك
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انتصار مشينش( باحث )
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درسنا في هذا البحث التفاعلات الحاصلة في الجملة المكونة من ( حمض الماليئيك - كبريتات كادميوم – ماء ) بالطرق الفيزيائية- الكيميائية ( قياس ال pH قياس الناقلية الكهربائية ) , و حددنا تراكيب المركبات المتشكلة في المحلول , ثم حسبنا ثوابت تشكلها . ثم حاولنا ااستفادة من هذا الكهرليتات في الطلاء الممفاني بالكادميوم و ذلك بالترسيب الكهربائي لهذا المعدن على المساري الصلبة ( نحاس , فولاذ ) فتوصلنا إلى تحديد أفضل هذا الكهرليتات غلفانياً , و الشروط المثلى لاستثماره.
We studying in this research the reaction with Cadmium sulphate in an aqueous solution by physical - chemical method in presence of MaleicAcid , and determined compounds which are formed in this solution and we calculated of it formation the constants. After we used these electrolytes in plating by Cadmium , that is by electro precipitation of this metal on the solid electrodes (steel, copper) so that we definite the best of these electrolytes for galvany and the set necessary conditions for its use.
References used
Bagotsky, V , S . Fundamentals of electrochemistry 2ed ,2006. 917 P
Spravachnik khimika Uzdatelstva " khimia " , Moscow , 1995 , V3 ,1004p
Bhasin, S. k ; Kumar , R. N . Polarography of the complexes of 2-amino- pyrimidine with Zn (II) and Cd ( II ) . Electrochem . 1991 V7, N3 P. 146-148
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The Diels - Alder reactions of furan and some derivatives with maleic anhydride
have been studied using methods of density functional theory (DFT): B3LYP, B3PW91,
MPW1PW91 and MPW1BPE with 6-31g(d) bases set and proceeding energy cor-relation
at M
P4 level of theory with same bases set. The results of this study showed that, for the
Diels - Alder reaction of Furan and 2-methyl furan with maleic anhydride, the reaction of
formation of exo-adduct proceeds under thermodynamical control, and the reaction of
formation of endo-adduct proceeds under kinatic control, but for the 2-furylmethanol, 2-
furylmethyl acetate and 2-furylmethyl benzoate, the reactions of formation of exo-adduct
proceed under thermodynamical and kinetic controls. The MPW1BPE/6-31g(d) level of
theory was advanced susceptible results by comparison with the reference experimental
data; exactly for furan-maleic anhydride Diels - Alder reaction.
In this research we studied the mechanism of the reaction the solution ( Malonic acid , Zinc , Water ) by using different methods.
The 1,3-dipolar cycloaddition of the aryl azide and some its of derivatives with cinnamic
acid was studied theoretically using different methods of Density Functional Theory
(DFT): B3LYP, B3PW91, MPW1PBE, MPW1PW91 and M062X with the basic set 6-
3
1g(d). Most of the used levels of theories provide closed results qualitatively, and the
results of the level of theory M062X / 6-31g (d) show that these reactions in the gas state
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