| CrOx/ SBA-15介孔催化剂上丙烷在二氧化碳气氛中脱氢反应的研究 |
| Chromium Oxide Supported on Mesoporous SBA-15 as Catalysts for Oxidative Dehydrogenation of Propane by CO2 |
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| 摘要: |
| 关键词: CrOx/ SBA-15 催化剂 丙烷氧化脱氢 CO2 CrⅢ活性物种 |
| 基金项目: |
| Abstract: The structure and catalytic properties based on Chromium Oxide supported on mesoporous SBA-15 for oxidative dehydrogenation of propane by CO2 have been studied by using X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS), electron spin resonance (ESR), X-ray photoelectron spectroscopy (XPS) and propane pulsing experiments in the absence of gas-phase O2. It has been shown that propane conversion and propene yield increase with Cr loadings. The propane conversion and propene yield on CrOx(Cr: 10wt%)/SBA-15 catalyst for oxidative dehydrogenation of propane by CO2 at 550 ℃ reach 24.8% and 21.8%, respectively .The results of ESR, UV-Vis DRS and propane pulsing experiments indicate that CrⅢ in the CrOx/ SBA-15 catalyst is the main active species in oxidative dehydrogenation of propane by CO2 and CrⅥ, CrⅤ is inactive in dehydrogenation. |
| Keywords: CrOx/ SBA-15 catalysts oxidative dehydrogenation of propane CO2 CrⅢ active species |
| 投稿时间：2005-03-13 修订日期：2005-06-09 |
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| 缪建文,周静,宋国华,范以宁,龚超.CrOx/ SBA-15介孔催化剂上丙烷在二氧化碳气氛中脱氢反应的研究[J].无机化学学报,2005,21(10):1541-1545. |
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