کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
597174 | 1454057 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of colloidal particles of poly(2-vinylpyridine)-coated palladium and platinum in organic solutions under the high temperatures and high pressures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis of colloidal particles of poly(2-vinylpyridine)-coated palladium and platinum in organic solutions under the high temperatures and high pressures Synthesis of colloidal particles of poly(2-vinylpyridine)-coated palladium and platinum in organic solutions under the high temperatures and high pressures](/preview/png/597174.png)
چکیده انگلیسی
Colloidal dispersions of poly(2-vinylpyridine)-coated palladium (Pd) and platinum (Pt) particles in the toluene/1-propanol solution have been synthesized by the decomposition and reduction of palladium acetylacetonate (Pd(acac)2) and platinum acetylacetonate (Pt(acac)2) under the high-temperatures and high-pressures conditions. The size and the structure of the synthesized particles have been examined by transmission electron micrograph (TEM) and extended X-ray absorption fine structure (EXAFS). At 473Â K and 25Â MPa, colloidal dispersions ([Pd]Â =Â 7.5Â mM) of Pd particles of 1.9Â nm as an average diameter, which had narrow particle size distributions, were synthesized within a few seconds. Pt particles were also synthesized with an average diameter of 2.1Â nm. On the other hand, bimetallic Pd/Pt particles were not synthesized at 473-623Â K and 25Â MPa, probably due to the difference of decomposition rate of each starting compound.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 315, Issues 1â3, 15 February 2008, Pages 304-310
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 315, Issues 1â3, 15 February 2008, Pages 304-310
نویسندگان
Masafumi Harada, Masaki Ueji, Yoshifumi Kimura,