کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
54800 | 47027 | 2013 | 7 صفحه PDF | دانلود رایگان |
Pd catalysts supported on activated silica–alumina fibers (CFs) and activated carbon felts (ACFs) were prepared and evaluated for the reduction of nitrite in water in a batch reactor. The electroless plating (ELP) method was used in order to deposit small Pd particles on the surface of the fibers. While a homogeneous distribution of Pd nanoparticles was obtained for carbon fibers, this was not the case for ceramic ones in which non-homogeneous patches of Pd films were formed. This fact resulted in a higher activity for nitrite reduction when carbon fibers were used. However, the selectivity toward the undesired product ammonia, measured at the end of the reaction, was slightly higher for Pd/ACFs catalysts.
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► Pd on activated carbon felts and ceramic fibers were prepared by ELP.
► A controlled deposition of Pd particles on carbon fibers (ACFs) was achieved.
► Good uniformity of particles with small size is associated with activity of Pd/ACFs.
► After reaction, the Pd surface concentration decreases, probably due to sinterization.
► The selectivity toward nitrogen was slightly higher for Pd/CFs catalysts.
Journal: Catalysis Today - Volume 212, 1 September 2013, Pages 16–22