Kinetic study of selective hydrogenation of crotonaldehyde over Fe-promoted Ir/BN catalysts
Kinetic study of selective hydrogenation of crotonaldehyde over Fe-promoted Ir/BN catalysts
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Fe助剂Ir/BN催化剂上巴豆醛选择性加氢反应动力学研究
DOI：
10.1016/j.apsusc.2018.08.230
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发表时间：
2019
影响因子：
6.7
通讯作者：
Di Ji Qing
中科院分区：
文献类型：
--
作者：
Ning Xiang;Xu Yu Meng;Wu An Qi;Tang Cen;Jia Ai Ping;Luo Meng Fei;Di Ji Qing
考察了一系列氧化铁改性的Ir/BN催化剂在巴豆醛气相选择加氢反应中的催化性能。加入的FeO xin的催化剂大大提高了性能，高达5倍的提高稳态巴豆醇产率（46.9%）相比，裸Ir/BN（7.2%）。表征结果表明，Ir-FeOx相互作用导致界面处产生新的活性位，从而提高了材料的性能.动力学研究表明，Ir/BN催化剂中Ir-FeOx界面活性位的转换频率（82.9 × 10−3s−1）远高于Ir 0-Irδ+位（3.10 × 10−3s−1），这是由于FeOx的促进导致了更高的本征速率常数（12.1 × 10−7v.s. 1.19× 10 - 7 molg-1 s-1）和较高的吸附平衡常数（3.49 v.s. 0.62 kPa−1）。
A series of FeOx-promoted Ir/BN catalysts were tested for gas phase selective hydrogenation of crotonaldehyde. The addition of FeOxin the catalyst greatly improves the performance, up to a 5-fold enhanced steady state crotyl alcohol yield (46.9%) compared to that of the bare Ir/BN (7.2%). The characterization results reveal that the Ir-FeOxinteraction results in the generation of new active sites at the interface, which are responsible for the enhanced performance. The kinetic study showed that the Ir-FeOxinterfacial active site has much higher turnover frequency (82.9 × 10−3s−1) than the Ir0-Irδ+site in the Ir/BN catalyst (3.10 × 10−3s−1), due to the promotion of FeOxleads to a higher intrinsic rate constant (12.1 × 10−7v.s. 1.19 × 10−7mol g−1s−1) and a higher adsorption equilibrium constant of crotonaldehyde (3.49 v.s. 0.62 kPa−1).
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影响因子：
--
作者：
Yang Xia;Wenkui Zhang;Zhen Xiao;Hui Huang;H. Zeng;Xiaorong Chen;Feng Chen;Y. Gan;X. Tao
通讯作者：
Yang Xia;Wenkui Zhang;Zhen Xiao;Hui Huang;H. Zeng;Xiaorong Chen;Feng Chen;Y. Gan;X. Tao
影响因子：
6.7
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
5.5
作者：
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