کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10389681 | 884247 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efficient photochemical recovery of rhenium from aqueous solutions
ترجمه فارسی عنوان
بازیابی فتوشیمیایی رنیوم از محلول های آبی
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کلمات کلیدی
فرنات، هیدرومتالورژی، استون، رسوب، کاهش،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Recovery of rhenium from aqueous solutions by photoinduced-electron transfer from an electron donor to excited-state ReO4â is reported for the first time. Specifically, irradiation of aqueous ReO4â in the presence of 2-propanol as the electron donor efficiently decreased the ReO4â concentration in the solution and resulted in formation of a precipitate consisting of amorphous ReO2 and ReO3 and formation of acetone by oxidation of 2-propanol. After 19Â h of irradiation, ReO4â had completely disappeared, and 89.1% of the initial rhenium content was recovered in the collected precipitate. Although an induction period prior to the decrease in the ReO4â concentration was observed, the induction period could be eliminated by introduction of acetone to the reaction system, which afforded 94.7% recovery of rhenium within 6Â h of irradiation. The acceleration of the reaction induced by acetone could be explained by an increase in the light absorption of ReO4â via precomplexation with acetone, which resulted in an increase in the emission intensity from the excited rhenium species.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 156, Part 2, 17 December 2015, Pages 242-248
Journal: Separation and Purification Technology - Volume 156, Part 2, 17 December 2015, Pages 242-248
نویسندگان
Hisao Hori, Yuta Yoshimura, Takafumi Otsu, Kotomi Kume, Yuki Mitsumori, Shuzo Kutsuna, Kazuhide Koike,