Abstract
A novel Pt/CN catalyst was synthesized by sodium borohydride treatment. The physical and chemical properties of Pt/CN catalyst were characterized by X-ray diffraction (XRD), brunner-emmet-teller (BET), transmission electron microscope (TEM) and High-resolution transmission electron microscopy (HRTEM). The characterized results showed that the catalyst has a high specific surface area, mesoporous structure and the mean size of Pt nanoparticles is 2.59 nm. Subsequently, the catalytic performance of Pt/CN catalyst for decline dehydrogenation was studied. Pt/CN catalyst exhibited excellent performance in decalin dehydrogenation with the conversion of decalin was 30.70%, and the selectivity of naphthalene was 90.86% at 200 ℃ for 150 minutes. When the reaction temperature increased to 210 ℃, the conversion of catalyst increased to 52.02%, and the selectivity of naphthalene reduced to 90.21%. The possible reason may be attributed to the difficulty in converting decalin to tetralin. This paper would provide a novel method for the synthesis of efficient dehydrogenation catalyst of decalin..
Highlights
Hydrogen energy has attracted wide attention because of its environmental friendliness, recyclability and high combustion calorific value
The conversion of decalin was 30.70% and 50.02% at 200-210°Cfor 150 minutes, respectivly.The catalyst physical and chemical property was obtained by X-ray diffraction (XRD), BET, transmission electron microscope (TEM) and High-resolution transmission electron microscopy (HRTEM)
The microstructure of the catalyst was studied by transmission electron microscope (TEM) and Highresolution transmission electron microscopy (HRTEM)
Summary
Hydrogen energy has attracted wide attention because of its environmental friendliness, recyclability and high combustion calorific value. One method to improve the dehydrogenation activity of decalin was added the second component (such as W, Re, Ir) to prepare bimetallic catalyst [6,7]. The dehydrogenation performance of decalin was affected by the type of carbon materials, pore structure and specific surface area. Sebastián and coworkers [10] pointed out that the catalyst with large specific surface area can obtain better initial activity, the small pore size would hinder the mass transfer of the products, reducing the dehydrogenation activity of decalin. Lee and coworkers [11] found that Pt nanoparticles could be dispersed effectively by oxidation treatment of carbon support, which can improve the dehydrogenation activity of decalin. The conversion of decalin was 30.70% and 50.02% at 200-210°Cfor 150 minutes, respectivly.The catalyst physical and chemical property was obtained by XRD, BET, TEM and HRTEM
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