Design and synthesis of metal sulfide catalysts supported on zeolite nanofiber bundles with unprecedented hydrodesulfurization activities.
Design and synthesis of metal sulfide catalysts supported on zeolite nanofiber bundles with unprecedented hydrodesulfurization activities.
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DOI：
10.1021/ja4043388
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发表时间：
2013-07
影响因子：
15
通讯作者：
Tiandi Tang;Lei Zhang;Wenqian Fu;Yuli Ma;Jin Xu;Jun Jiang;G. Fang;F. Xiao
中科院分区：
文献类型：
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作者：
Tiandi Tang;Lei Zhang;Wenqian Fu;Yuli Ma;Jin Xu;Jun Jiang;G. Fang;F. Xiao
开发高活性加氢脱硫(HDS)催化剂对生产超清洁燃料具有重要意义。在此，我们报道了含有平行中孔通道的具有束结构的晶态丝光沸石纳米纤维(Nb-MOR)。在Nb-MoR的中孔和微孔中引入钴和钼(CoMo)物种后，Nb-MoR负载的CoMo催化剂(CoMo/Nb-MoR)在4，6-二甲基二苯并噻吩加氢反应中表现出前所未有的高活性(99.1%)和非常好的催化剂寿命(61.5%)，而传统的γ-Al_2O_3负载的CoMo催化剂的活性为61.5%。在微孔中形成的溢出氢迁移到中孔附近的活性CoMo位上，这可能是导致HDS活性大大增强的原因。
Developing highly active hydrodesulfurization (HDS) catalysts is of great importance for producing ultraclean fuel. Herein we report on crystalline mordenite nanofibers (NB-MOR) with a bundle structure containing parallel mesopore channels. After the introduction of cobalt and molybdenum (CoMo) species into the mesopores and micropores of NB-MOR, the NB-MOR-supported CoMo catalyst (CoMo/NB-MOR) exhibited an unprecedented high activity (99.1%) as well as very good catalyst life in the HDS of 4,6-dimethyldibenzothiophene compared with a conventional γ-alumina-supported CoMo catalyst (61.5%). The spillover hydrogen formed in the micropores migrates onto nearby active CoMo sites in the mesopores, which could be responsible for the great enhancement of the HDS activity.