n-Butane Dehydrogenation on PtSn/Carbon Modified MgO Catalysts
- n-Butane Dehydrogenation on PtSn/Carbon Modified MgO Catalysts
- Shashikala Veldurthi; 정헌; 신채호; 고형림; 정광덕
- dehydrogenation; CMgO; Catalysis; PtSn/CMgO; butane; PtSn alloy; butenes; n-Butane
- Issue Date
- Catalysis letters
- VOL 143, NO 7, 651-656
- Carbon modified magnesium oxides (CMgO-600, CMgO-700 and CMgO-800) were prepared from pyrolyzing n-hexane vapors at 600, 700 and 800 °C, respectively, on the surface of the MgO. Modification of magnesium oxide (CMgO) with carbon increased the covalent character of the Mg–O bond, consequently decreasing the basicity. TEM and H2 chemisorption showed that the average metal particle size on CMgO was ca. 3.0 nm and the HRTEM images showed that the metal particles consisted of Pt–Sn alloys with different Pt/Sn composition. PtSn/CMgO catalysts showed much higher activity and selectivity than PtSn/MgO for the butane dehydrogenation, because a high metal dispersion on PtSn/CMgO resulted from preventing MgO dissolution during the impregnation step of metal salts on the support. The PtSn/CMgO-600 catalyst among the prepared catalysts gave the highest butenes yield.
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