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The effect of calcination temperature on catalytic performance of PtSnNa/ZSM-5 catalysts for propane dehydrogenation was studied. It was found that when the calcination temperature was in the range of 400–500°C, structure and acidity of the catalyst did not change obviously. In contrast to this, with the increase of calcination temperature, the specific surface area and pore volume dramatically decreased,...
PtSn/ZSM-5 catalyst with different amounts of Sn was prepared for propane dehydrogenation. It was found that the addition of Sn not only had “geometric effect”, thus decreasing the size of the surface Pt ensembles, but also changed the interfacial character between metal and support. The presence of Sn could facilitate the transfer of the carbon deposits from the active sites to the carrier, which...
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