High-performance Pd/brass-fiber catalyst for selective hydrogenation of acetylene: Effect of calcination-assisted endogenous growth of ZnO-CuOx on brass-fiber
High-performance Pd/brass-fiber catalyst for selective hydrogenation of acetylene: Effect of calcination-assisted endogenous growth of ZnO-CuOx on brass-fiber
复制标题
用于乙炔选择性加氢的高性能 Pd/黄铜纤维催化剂:煅烧辅助 ZnO-CuOx 内生生长对黄铜纤维的影响
DOI:
10.1016/j.jcat.2019.12.027
复制
发表时间:
2020-02
影响因子:
7.3
通讯作者:
Lu Yong
中科院分区:
文献类型:
--
作者:
Wang Song;Zhu Jian;Si Jiaqi;Zhao Guofeng;Liu Ye;Lu Yong
Microfibrous-structured Pd/brass-fiber catalysts are developed for the selective hydrogenation of acetylene in the front-end configuration. The brass fibers are pre-calcined in air to create an endogenously growing ZnO-CuOxcomposite layer, and 0.25 wt% Pd is loaded on the brass fibers via the impregnation method. The activity and selectivity of our Pd/brass-fiber catalysts are primarily governed by the alloying degree of active sites regarded as Pd-Zn-Cu ensembles with the PdCu(alloy)-PdZnCu(alloy) twin structure, which are strongly sensitive to both the brass-fiber calcination and the catalyst reduction temperatures. For the preferred catalyst obtained using brass fibers calcined at 500 °C and reduced in H2at 250 °C, over 90% selectivity is achieved at nearly 100% acetylene conversion with promising stability. Additionally, due to the weakened ethylene hydrogenation ability at high reaction temperature over the Pd-Zn-Cu ensembles, the catalysts tend to present higher ethylene selectivity as the reaction temperature increases.
登录
查看更多内容
影响因子:
--
作者:
Lin, Yan-Gu;Hsu, Yu-Kuei;Chen, Kuei-Hsien
通讯作者:
Chen, Kuei-Hsien
影响因子:
4.5
作者:
M. Siebert;René R. Zimmermann;M. Armbrüster;R. Dittmeyer
通讯作者:
M. Siebert;René R. Zimmermann;M. Armbrüster;R. Dittmeyer
影响因子:
9.5
作者:
Wang Chunzheng;Ding Jia;Zhao Guofeng;Deng Tao;Liu Ye;Lu Yong
通讯作者:
Lu Yong
影响因子:
16.5
作者:
Zhou Huiran;Yang Xiaofeng;Wang Aiqin;Miao Shu;Liu Xiaoyan;Pan Xiaoli;Su Yang;Li Lin;Tan Yuan;Zhang Tao
通讯作者:
Zhang Tao
影响因子:
4.5
作者:
Riguang Zhang;Bo Zhao;Lixia Ling;Zhang Riguang;Anjie Wang;Christopher K. Russell;Baojun Wang;Maohong Fan
通讯作者:
Maohong Fan