Synthesis and Characterization of Silica-Supported Boron Oxide Catalysts for the Oxidative Dehydrogenation of Propane
Synthesis and Characterization of Silica-Supported Boron Oxide Catalysts for the Oxidative Dehydrogenation of Propane
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DOI：
10.1021/acs.jpcc.9b07429
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发表时间：
2019-11-07
影响因子：
3.7
通讯作者：
Hermans, Ive
中科院分区：
文献类型：
--
作者：
Love, Alyssa M.;Cendejas, Melissa C.;Hermans, Ive
我们报告了通过初步的湿度浸渍制备的二氧化硅氧化硼的氧化脱氢作用（ODH）活性。原始的和用红外，拉曼和固态NMR光谱的催化剂的表征揭示了分离的和聚集的氧化硼位点的存在。这些研究的结果与我们早期在含硼硼的ODH催化剂（例如H-BN，Metal Borides和Element Boron）方面的工作共同提供了直接的证据，表明在这些材料表面形成的氧化硼属物质是在这些材料表面形成的。负责特殊的催化行为。我们预计对受支持的硼材料的研究可以洞悉选择性含硼的ODH催化剂所需的结构特征。
We report on the oxidative dehydrogenation (ODH) activity of silica-supported boron oxide prepared via incipient wetness impregnation. Characterization of pristine and spent catalysts with infrared, Raman, and solid-state NMR spectroscopy reveals the presence of both isolated and aggregated oxidized boron sites. The results of these investigations, in combination with our earlier work on bulk boron-containing ODH catalysts (e.g., h-BN, metal borides, and elemental boron), give direct evidence that oxidized boron species formed in situ on the surface of these materials are responsible for the exceptional catalytic behavior. We anticipate that investigation of supported boron materials can provide insight into the structural characteristics required for selective boron-containing ODH catalysts.