低温还原Ni_2P_2S_6制备表面含硫Ni_2P催化剂
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- 英文论文题名：Facile Preparation of Ni_2P with a Sulfur-Containing Surface Layer by Low-Temperature Reduction of Ni_2P_2S_6
- 论文作者：田松 ; 李翔 ; 王安杰
- 英文论文作者：Song Tian ; Xiang Li ; Anjie Wang ; State Key Laboratory of Fine Chemicals ; School of Chemical Engineering ; Dalian University of Technology
- 年：2016
- 作者机构：大连理工大学精细化工国家重点实验室;
- 论文关键词：Ni_2P ; 含硫表面层 ; 加氢脱硫 ; 选择加氢
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第十五分会：表界面结构调控与催化
- 语种：中文
- 分类号：O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第十五分会 ; 表界面结构调控与催化
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：258k
- 原文格式：D
- 会议级别：全国
摘要
富金属的过渡金属磷化物(Ni_2P、Mo P及WP等),尤其是Ni_2P,具有金属的特性,是重要的催化材料,在加氢精制、加氢脱氧、选择加氢/脱氢以及析氢等领域表现出良好的性能[1]。氢气气氛下程序升温还原(TPR)过渡金属磷酸盐前驱体是制备过渡金属磷化物最常用方法[2]。由于磷酸盐的P–O键非常强,其还原需要在很高的温度下才能进行(>500 oC),因而制约了过渡金属磷化物催化剂的广泛应用。本文报道一种新的Ni_2P制备方法,即采用一种镍的硫代连二磷酸盐(Ni_2P2S6)代替镍的磷酸盐做前驱体,由于P–S键比磷酸盐中P–O键弱,因此从Ni_2P2S6出发可以在温和的条件下(200~220 oC)制备Ni_2P。制备的催化剂具有一层明显的含硫表面层(图1),表现出良好的加氢脱硫和选择加氢性能,有可能替代贵金属成为一种新型加氢催化剂[3]。
Preparation of Ni2 P by the reduction of nickel hexathiodiphosphate(Ni_2P2S6) at a temperature as low as 220 oC.A distinct sulfur-containing layer was observed at the surface of the derived Ni2 P catalyst,which might explain its high HDS and selective hydrogenation performance in comparison with those of the Ni2 P catalyst prepared by the conventional TPR method.These features render the catalyst a legitimate alternative nonprecious metal catalyst for hydrogenation reactions.
Preparation of Ni2 P by the reduction of nickel hexathiodiphosphate(Ni_2P2S6) at a temperature as low as 220 oC.A distinct sulfur-containing layer was observed at the surface of the derived Ni2 P catalyst,which might explain its high HDS and selective hydrogenation performance in comparison with those of the Ni2 P catalyst prepared by the conventional TPR method.These features render the catalyst a legitimate alternative nonprecious metal catalyst for hydrogenation reactions.
引文
[1]S.T.Oyama,T.Gott,H.Zhao,Y.-K.Lee,Catal.Today 2009,143:94.
[2]R.Prins,M.E.Bussell,Catal.Lett.2012,142:1413.
[3]Song Tian,Xiang Li,Anjie Wang,Roel Prins,et al.Angew.Chem.Int.Ed.2016,55:4030.
[2]R.Prins,M.E.Bussell,Catal.Lett.2012,142:1413.
[3]Song Tian,Xiang Li,Anjie Wang,Roel Prins,et al.Angew.Chem.Int.Ed.2016,55:4030.