DICP OpenIR
Barium Hydride-Mediated Nitrogen Transfer and Hydrogenation for Ammonia Synthesis: A Case Study of Cobalt
Gao, Wenbo1,2; Wang, Peikun1,2; Guo, Jianping1,4; Chang, Fei1,2; He, Teng1; Wang, Qianru1,2; Wu, Guotao1; Chen, Ping1,3,4
关键词Ammonia Synthesis Barium Hydride Cobalt Barium Imide Promoter Heterogeneous Catalysis
刊名ACS CATALYSIS
2017-05-01
DOI10.1021/acscatal.7b00284
7页:3654-3661
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]SUPPORTED RUTHENIUM CATALYST ; IRON-COBALT ; CARBON ; PROMOTER ; ADSORPTION ; PRESSURE ; SURFACES ; KINETICS ; NITRIDE
英文摘要Industrial ammonia synthesis catalyzed by Fe- and Ru-based catalysts is an energy-consuming process. The development of low-temperature active catalyst has been pursued for a century. Herein, we report that barium hydride (BaH2) can synergize with Co, leading to a much better low-temperature activity, i.e., the BaH2-Co/carbon nanotube (CNT) catalyst exhibits ammonia synthesis activity right above 150 degrees C; at 300 degrees C, it is 2 orders of magnitude higher than that of the BaO-Co/CNTs and more than 2.5-times higher than Cs promoted Ru/MgO. Kinetic analyses reveal that the dissociative adsorption of N-2 on the Co-BaH2 catalyst may not be the rate-determining step, as evidenced by the much smaller reaction order of N-2 (0.43) and the lower apparent activation energy (58 kJ mol(-1)) compared with those of the unpromoted and BaO-promoted Co-based catalysts. BaH2, with a negative hydride ion, may act as a strong reducing agent, removing activated N from the Co surface and forming a BaNH species. The hydrogenation of the BaNH species to NH3 and BaH2 can be facilely carried out at 150 degrees C. The relayed catalysis by Co and BaH2 sites creates an synthesis under milder conditions.
语种英语
WOS记录号WOS:000401054300069
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152288
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Collaborat Innovat Ctr Chem Energy Mat, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Gao, Wenbo,Wang, Peikun,Guo, Jianping,et al. Barium Hydride-Mediated Nitrogen Transfer and Hydrogenation for Ammonia Synthesis: A Case Study of Cobalt[J]. ACS CATALYSIS,2017,7:3654-3661.
APA Gao, Wenbo.,Wang, Peikun.,Guo, Jianping.,Chang, Fei.,He, Teng.,...&Chen, Ping.(2017).Barium Hydride-Mediated Nitrogen Transfer and Hydrogenation for Ammonia Synthesis: A Case Study of Cobalt.ACS CATALYSIS,7,3654-3661.
MLA Gao, Wenbo,et al."Barium Hydride-Mediated Nitrogen Transfer and Hydrogenation for Ammonia Synthesis: A Case Study of Cobalt".ACS CATALYSIS 7(2017):3654-3661.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Gao, Wenbo]的文章
[Wang, Peikun]的文章
[Guo, Jianping]的文章
百度学术
百度学术中相似的文章
[Gao, Wenbo]的文章
[Wang, Peikun]的文章
[Guo, Jianping]的文章
必应学术
必应学术中相似的文章
[Gao, Wenbo]的文章
[Wang, Peikun]的文章
[Guo, Jianping]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。