کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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170277 | 458383 | 2015 | 9 صفحه PDF | دانلود رایگان |
The influence of three preparation methods on the properties and reaction performances of a titania-supported Mn–Cr bimetallic nanocatalyst for high-temperature water–gas shift reaction has been studied. Impregnation, co-precipitation and thermal decomposition of the [Mn(H2O)6]3[Cr(NCS)6]2·H2O/TiO2 precursor as an inorganic precursor complex were utilized for the preparation of the Mn–Cr/TiO2 catalysts. The calcined catalyst and the precursor that were used for its preparation were characterized by powder X-ray diffraction, scanning electron microscopy, Brunauer–Emmett–Teller specific surface area measurements, thermal gravimetric analysis, differential scanning calorimetry and Fourier transform–infrared spectroscopy. The high-temperature water–gas shift activity was appraised in the temperature range from 280 to 420 °C. The results showed that thermal decomposition of inorganic precursor complexes is more advantageous than impregnation and co-precipitation methods for the preparation of Mn–Cr/TiO2 catalysts for high-temperature water–gas shift reaction.
Journal: Comptes Rendus Chimie - Volume 18, Issue 2, February 2015, Pages 178–186