首页|Synthesis of C-4- and C-5-olefins by novel alkane dehydrogenation with H2S co-feeding
Synthesis of C-4- and C-5-olefins by novel alkane dehydrogenation with H2S co-feeding
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NSTL
Elsevier
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-C-5), n-pentane (n-C5), and n-butane (n-C-4). The reactivity evaluation showed that Fe/SiO2 exhibited a high activity toward iso-C-5 dehydrogenation with H2S co-feeding, producing iso-amylenes, such as 2-methyl-1butene, 2-methyl-2-butene, and isoprene. The total C-5-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-C-4 and n-C-5 with H2S co-feeding, C-4- and C-5-olefins were obtained, respectively, with relatively high selectivities. In particular, the Fe/SiO2-catalyzed n-C-4 dehydrogenation exhibited greater selectivity than iso-C-5 and n-C-5 dehydrogenations; the product of the n-C4 dehydrogenation was stable for 20 h.
NSTL
Elsevier
