脱氢
催化作用
化学
丙烷
烷烃
烯烃纤维
丁烷
选择性
异戊二烯
丙烯
丁烯
反应性(心理学)
药物化学
有机化学
乙烯
共聚物
聚合物
病理
替代医学
医学
作者
Ryo Watanabe,Chikamasa Yokoyama,Yohei Miyagi,Shota Kayaki,Nobuyasu Ohshio,Choji Fukuhara
标识
DOI:10.1016/j.apcata.2021.118442
摘要
In our previous study, an iron-supported silica (Fe/SiO2) catalyst exhibiting excellent activity toward propane dehydrogenation with hydrogen sulfide (H2S) co-feeding was identified. This study investigated the potential application of the Fe/SiO2 catalyst for the dehydrogenation of relatively larger molecules, such as iso-pentane (iso-C5), n-pentane (n-C5), and n-butane (n-C4). The reactivity evaluation showed that Fe/SiO2 exhibited a high activity toward iso-C5 dehydrogenation with H2S co-feeding, producing iso-amylenes, such as 2-methyl-1-butene, 2-methyl-2-butene, and isoprene. The total C5-olefin yield obtained using the Fe/SiO2 catalyst was higher than that obtained using Co/SiO2 and Ni/SiO2 catalysts. When Fe/SiO2 was applied to the dehydrogenation of n-C4 and n-C5 with H2S co-feeding, C4- and C5-olefins were obtained, respectively, with relatively high selectivities. In particular, the Fe/SiO2-catalyzed n-C4 dehydrogenation exhibited greater selectivity than iso-C5 and n-C5 dehydrogenations; the product of the n-C4 dehydrogenation was stable for 20 h.
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