کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
213472 462103 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of perrhenic acid using ion exchange method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of perrhenic acid using ion exchange method
چکیده انگلیسی

The paper presents results of the study for obtaining perrhenic acid from aqueous ammonium perrhenate solutions by ion exchange. Two ways of perrhenic acid synthesis have been examined: sorption of perrhenate anion on selected anion exchange resins (followed by elution of the sorbed rhenium as HReO4), and sorption of ammonium ion on selected cation exchange resins. The method of ammonium ion sorption on cation exchange resins has proved to be more effective. Using C 160 (H) cation exchange resin, perrhenic acid containing > 300 g/L of Re (after performing concentration in vacuum evaporator) has been obtained, with impurities concentration at the level of: < 1.0 mg/L NH4, ≤ 0.05 mg/L sodium, ≤ 0.20 mg/L potassium, ≤ 0.10 mg/L magnesium and ≤ 0.20 mg/L calcium.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 89, Issues 3–4, December 2007, Pages 289–296
نویسندگان
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