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Register a new userPreciptation of vanadates from their water solutions using different protonated amine compounds
ترسيب الفانادات من محاليلها المائية باستخدام مركبات أمينية مختلفة مبرتنة
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Tishreen University ورقة بحثية
Publication date
2018
fields
Chemistry
and research's language is
العربية
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Shamra Editor
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اسُتخدمت العديد من المركبات الكيميائية ( أسس , حموض لاعضوية , أملاح ) لإيجاد مذيب مناسب لأوكسيد الفاناديوم ((V2O5 و تعيين الشروط المثلى لإذابته فكان أفضلها هيدروكسيد الصوديوم (NaOH) بتركيز ((2M كانت الاذابة (100%) عند درجة الحرارة (90) مئوية و زمن الاذابة (30) دقيقة و عدد دورات المحرك المغناطيسي (800) دورة/ دقيقة و نسبة صلب/سائل (200) غ/ل . كما استخدمت مركبات أمينية مبرتنة لترسيب الفانادات من محاليلها أحادي ايتانول امين ((C2H5ONH2 , ثنائي فنيل أمين (C6H5)2NH ، الهيدرازين (N2H4 )، هدروكسيد أمين هدروكلورايد (NH2OH.HCℓ) ، اليوريا N2H4CO)) ، و قد برتينت بعدة حموض لاعضوية مركزة (HCℓ ، H2SO4 ،HNO3 ) و بنسبة 1:1 حمض للأساس فكان المركب الأميني الأمثل لترسيب الفانادات احادي ايتانول أمين المبرتن بحمض الكبريت المركز.
Many chemical compounds (bases, inorganic acids, salts) have been used to find a suitable solvent for vanadium oxide And determine optimal conditions for its Dissolution.The best of them was sodium hydroxide at 2M concentration. The solubility was 100% at 90 °C and the solubilitys time was 30 min. The number of motor cycles was 800 cycles / min and the liquid / solid ratio was 200 g / L. In addition,the best amino protonadted compounds were used to precipitate vanadates from their solutions (monoethanolamine, diphenylamine, hydrazine, hydroxide amine hydrochloride, urea) with several inorganic acids (HCl, H2SO4, HNO3) and 1: 1 acid/base was monoethanolamine protonated with concentrated sulfur acid .
References used
SUGITA,I. HIROYUKI,O.Solvent extraction research and development , Japan.vol.24,no 2, (2017)61-69
VITOLO, M. SEGGIANI ,S. FILIPI, C. Recovery of vanadium from heavy oil Orimulsion fly ashes, Hydrometallurgy 57 (2000) 141-149
AKITA, T. MAEDA, H. TAKEUCHI,S. Recovery of vanadium and nickel in fly ash from heavy oil, J. Chem. Technol. Biotechnol. 62 (1995)345–350
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equilibrium ach
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tabilize an
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possessing a given “philicity”.
Nucleophiles attacks the odd C atomes (
1,3,5... C attack) whereas electrophiles attacks the
even C atomes (
2,4,6... C attack) of the carbonyl compounds. If the reactivity of a carbonyl
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