物理化学学报2011，Vol.27Issue(10)：2421-2426,6.
介孔CeNiO催化剂的合成及其丙烷氧化脱氢制丙烯反应性能
Synthesis and Catalytic Performances of Mesoporous CeNiO Catalysts for the Oxidative Dehydrogenation of Propane to Propene
摘要
Abstract
Mesoporous NiO and CeNiO catalysts were prepared by homogeneous precipitation using sodium dodecyl sulfate (SDS) mixed with triblock copolymer P123 as a template and urea as a hydrolysis-controlling agent. The prepared catalysts were evaluated for the oxidative dehydrogenation of propane (ODP) to propene and the structure and properties of the catalysts were characterized by N2 adsorption-desorption, transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and H2 temperature-programmed reduction (H2-TPR). The results showed that between 400 and 450 °C, the NiO and CeNiO catalysts exhibited similar catalytic behavior for the ODP reaction but at low temperatures (<400 °C) the catalysts doped with Ce had higher catalytic activity. On NiO only a 3.1% propene yield was obtained at 325 °C while the yield on 5CeNiO (nCe/nNI=5%) was as high as 12.2% at the same temperature. The results of N2 adsorption-desorption and TEM indicated that both the prepared NiO and CeNiO catalysts possessed a high surface area and a wormhole-like mesostructure. The H2-TPR results revealed that part of the oxygen species became more reducible because of the presence of Ce in CeNiO, which may be the mainreason for the higher activities of the catalysts.关键词
丙烷/氧化脱氢/丙烯/介孔CeNiO催化剂Key words
Propane/ Oxidative dehydrogenation/ Propene/ Mesoporous CeNiO catalyst分类
化学化工引用本文复制引用
汪彩彩,李建辉,孙毅飞,朱晓权,黄传敬,翁维正,万惠霖..介孔CeNiO催化剂的合成及其丙烷氧化脱氢制丙烯反应性能[J].物理化学学报,2011,27(10):2421-2426,6.基金项目
国家重点基础研究发展规划项目(973) (2010CB732300),国家自然科学基金(21073148,21033006,20803060)和福建省自然科学基金(2009J01038)资助 （973）
