Alkali and alkaline earth hydrides-driven n-2 activation and transformation over mn nitride catalyst
文献类型：期刊论文
| 作者 | Chang, Fei1,2,5; Guan, Yeqin1,2; Chang, Xinghua4; Guo, Jianping1,3; Wang, Peikun1,2; Gao, Wenbo1,2; Wu, Guotao1; Zheng, Jie4; Li, Xingguo4; Chen, Ping1,3 |
| 刊名 | Journal of the american chemical society
 |
| 出版日期 | 2018-11-07 |
| 卷号 | 140期号:44页码:14799-14806 |
| ISSN号 | 0002-7863 |
| DOI | 10.1021/jacs.8b08334 |
| 通讯作者 | Guo, jianping(guojianping@dicp.ac.cn) ; Chen, ping(pchen@dicp.ac.cn) |
| 英文摘要 | Early 3d transition metals are not focal catalytic candidates for many chemical processes because they have strong affinities to o, n, c, or h, etc., which would hinder the conversion of those species to products. metallic mn, as a representative, undergoes nitridation under ammonia synthesis conditions forming bulk phase nitride and unfortunately exhibits negligible catalytic activity. here we show that alkali or alkaline earth metal hydrides (i.e., lih, nah, kh, cah2, and bah2, ahs for short) promotes the catalytic activity of mn nitride by orders of magnitude. the sequence of promotion is bah2 > lih > kh > cah2 > nah, which is different from the order observed in conventional oxide or hydroxide promoters. ahs, featured by bearing negatively charged hydrogen atoms, have chemical potentials in removing n from mn nitride and thus lead to significant enhancement of n-2 activation and subsequent conversion to nh3. detailed investigations on mn-lih catalytic system disclosed that the active phase and kinetic behavior depend strongly on reaction conditions. based on the understanding of the synergy between ahs and mn nitride, a strategy in the design and development of early transition metals as effective catalysts for ammonia synthesis and other chemical processes is proposed. |
| WOS关键词 | TRANSITION-METAL NITRIDES ; AMMONIA-SYNTHESIS ; RUTHENIUM CATALYSTS ; HYDROGEN ; IMPROVEMENT ; POTASSIUM ; MAGNESIA ; KINETICS ; PROMOTER ; NITROGEN |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000449887800040 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373052 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Guo, Jianping; Chen, Ping |
| 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.Collaborat Innovat Ctr Chem Energy Mat, Dalian 116023, Peoples R China 4.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 5.Univ Utrecht, Debye Inst Nanomat Sci, Inorgan Chem & Catalysis, Univ Weg 99, NL-3584 CG Utrecht, Netherlands |
| 推荐引用方式 GB/T 7714 | Chang, Fei,Guan, Yeqin,Chang, Xinghua,et al. Alkali and alkaline earth hydrides-driven n-2 activation and transformation over mn nitride catalyst[J]. Journal of the american chemical society,2018,140(44):14799-14806. |
| APA | Chang, Fei.,Guan, Yeqin.,Chang, Xinghua.,Guo, Jianping.,Wang, Peikun.,...&Chen, Ping.(2018).Alkali and alkaline earth hydrides-driven n-2 activation and transformation over mn nitride catalyst.Journal of the american chemical society,140(44),14799-14806. |
| MLA | Chang, Fei,et al."Alkali and alkaline earth hydrides-driven n-2 activation and transformation over mn nitride catalyst".Journal of the american chemical society 140.44(2018):14799-14806. |
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来源：大连化学物理研究所
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