摘要:
Tungsten substituted mesoporous FDU-12 (W-FDU-12) catalysts were synthesized by a one-pot hydrothermal process using F127 as the structure directing agent. The studies of TEM, SAXS and BET illustrated that the highly ordered mesoporous structure of FDU-12 was maintained in the doped W-FDU-12 samples. XPS studies revealed that a high concentration of W5+ species appeared in doped W-FDU-12 catalysts whereas supported WO3/FDU-12 and WO3/SiO2 catalysts only contained W6+ species. Tandem catalytic conversion of 1-butene and ethene to propene through isomerization of 1-butene to 2-butene and consecutive cross metathesis of 2-butene and ethene in a fixed-bed reactor at different temperatures and atmospheric pressure was used to evaluate the catalytic performance of the W-FDU-12 catalyst, combined with MgO. The catalytic results showed that the doped W-FDU-12 illustrated a superior catalytic performance relative to the supported WO3/FDU-12 and WO3/SiO2 catalysts. The higher metathesis activity of W-FDU-12 catalysts can be ascribed to the good dispersion of W species and the incorporation of W species into the framework of FDU-12, forming a substantial amount of W5+, which was beneficial for the cross metathesis of 2-butene and ethene to propene.
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期刊:
RSC ADVANCES
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分类:
物理学
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普通物理:统计和量子力学,量子信息等
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引用:
ChinaXiv:201705.00086
(或此版本
ChinaXiv:201705.00086V1)
doi:10.12074/201705.00086
CSTR:32003.36.ChinaXiv.201705.00086.V1
- 推荐引用方式:
Xu, W [Xu, Wei][ 1,2 ],Lin, C [Lin, Chao][ 1 ],Liu, H [Liu, Huan][ 1 ],Yu, HB [Yu, Hongbo][ 1 ],Tao, K [Tao, Kai][ 1 ],Zhou, SH [Zhou, Shenghu][ 1 ].(2017).Tandem catalytic conversion of 1-butene and ethene to propene over combined mesoporous W-FDU-12 and MgO catalysts.RSC ADVANCES.[ChinaXiv:201705.00086]
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