脱氢
碳纳米纤维
丙烯
煅烧
丙烷
催化作用
选择性
杂原子
无机化学
化学
硼
多相催化
材料科学
有机化学
戒指(化学)
作者
Yanila Marco,Laura Roldán,Edgar Muñoz,Enrique García‐Bordejé
出处
期刊:Chemsuschem
[Wiley]
日期:2014-08-19
卷期号:7 (9): 2496-2504
被引量:34
标识
DOI:10.1002/cssc.201402363
摘要
Abstract Carbon nanofibres (CNFs) were modified with B and P by an ex situ approach. In addition, CNFs doped with N were prepared in situ using ethylenediamine as the N and C source. After calcination, the doped CNFs were used as catalysts for the oxidative dehydrogenation of propane. For B‐CNFs, the effects of boron loading and calcination temperature on B speciation and catalytic conversion were studied. For the same reaction temperatures and conversions, B‐ and P‐doped CNFs exhibited higher selectivities to propene than pristine CNFs. The N‐CNFs were the most active but the least selective of the catalysts tested here. Our results also show that the type of P precursor affects the selectivity to propene and that CNFs modified using triphenylphosphine as the precursor provided the highest selectivity at isoconversion.
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