کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9635871 | 1427494 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New approaches to the preparation of metal or metal oxide particles on the surface of porous materials using supercritical water:
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Supercritical water was used as preparation media for particle deposited materials. Manganese oxide, silver, and lead oxide were prepared on alumina supports from metal acetate solutions in supercritical region. The resulting samples were characterized by X-ray diffraction (XRD), electron probe microanalyzer (EPMA), and transmission electron microscope (TEM). It is shown that metal or metal oxide particles could be crystallized onto the support surface, and could reach into the deeper part of the ball-type support with an increase of reaction time. It is also suggested that the crystallinity and composition of products can be controlled by temperature and pressure during the preparation with supercritical water. Analyses of the TEM images show the possibility to crystallize nano-sized particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 33, Issue 1, January 2005, Pages 61-67
Journal: The Journal of Supercritical Fluids - Volume 33, Issue 1, January 2005, Pages 61-67
نویسندگان
Junichi Otsu, Yoshito Oshima,