کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9632537 | 462114 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultra fast microwave-assisted leaching for recovery of platinum from spent catalyst
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The platinum/rhenium bimetallic catalyst is widely used in reforming process for the production of high octane fuels. This spent catalyst contains 0.2% Pt, 0.43% Re and other impurities. This work has investigated two alternative methods for leaching spent catalyst sample. In the first method the sample was refluxed with aqua regia at a liquid / solid ratio of 5 for 2.5 h. In the second case, microwave radiation was used at a power of 150 W with aqua regia at a liquid / solid ratio of 2 for 5 min. After leaching, the platinum was separated from rhenium and recovered as diammonium hexachloroplatinate with recoveries of 96.5% and 98.3%. Rhenium was recovered as potassium perrehenate by recovery of 94.2% and 98.9%, respectively in these methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 78, Issues 3â4, August 2005, Pages 166-171
Journal: Hydrometallurgy - Volume 78, Issues 3â4, August 2005, Pages 166-171
نویسندگان
D. Jafarifar, M.R. Daryanavard, S. Sheibani,