Synthesis, structure and the dehydrogenation mechanism of calcium amidoborane hydrazinates
文献类型：期刊论文
| 作者 | Li, Zhao1,3; He, Teng3; Wu, Guotao3; Chen, Weidong1,3; Chua, Yong Shen4; Guo, Jianping1; Xie, Dong3; Ju, Xiaohua3; Chen, Ping2,3 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2016-01-07 |
| 卷号 | 18期号:1页码:244-251 |
| ISSN号 | 1463-9076 |
| DOI | 10.1039/c5cp04257g |
| 文献子类 | Article |
| 英文摘要 | The calcium amidoborane hydrazinates, Ca(NH2BH3)(2)center dot nN(2)H(4), were firstly synthesized by reacting different molar ratios of Ca(NH2BH3)(2) and N2H4. In particular, Ca(NH2BH3)(2) and N2H4 with a molar ratio of 1: 2 crystallizes into the orthorhombic symmetry P2(1)2(1)2(1) space group with the lattice parameters of a = 6.6239(4) angstrom, b = 13.7932(6) angstrom, c = 4.7909(2) angstrom. The dehydrogenations of calcium amidoborane hydrazinates are two-step reactions, exhibiting superior dehydrogenation properties compared with those of pristine Ca(NH2BH3)(2). For Ca(NH2BH3)(2)-1/2N(2)H(4), approximately 4.6 equiv. hydrogen (or 7.9 wt% hydrogen) can be released at 150 degrees C. Kinetic analysis shows that the activation energies for the two steps of hydrogen desorption from Ca(NH2BH3)(2)center dot 2N(2)H(4), are much lower than those of pristine Ca(NH2BH3)(2), suggesting an improvement in the dehydrogenation kinetics of Ca(NH2BH3)(2) after coordinating with N2H4. Isotopic labeling results show that the driving force for the dehydrogenation of calcium amidoborane hydrazinates is the combination mechanism of protonic hydrogen and hydridic hydrogen (H-delta+ and H delta-). In addition, initial H-2 release from calcium amidoborane hydrazinates originates from the interaction of [-BH3] and N2H4, rather than [-BH3] and [-NH2] (in [-NH2BH3]). |
| WOS关键词 | HYDROGEN-STORAGE PROPERTIES ; AMMONIA-BORANE ; AMINE-BORANES ; LITHIUM AMIDOBORANE ; RELEASE ; ALKALI ; DECOMPOSITION ; ENERGY ; HYDRAZINIDOBORANE ; REGENERATION |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000368755500026 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/171344]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | He, Teng; Chen, Ping |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China 4.Univ Sains Malaysia, Sch Chem Sci, George Town 11800, Malaysia |
| 推荐引用方式 GB/T 7714 | Li, Zhao,He, Teng,Wu, Guotao,et al. Synthesis, structure and the dehydrogenation mechanism of calcium amidoborane hydrazinates[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2016,18(1):244-251. |
| APA | Li, Zhao.,He, Teng.,Wu, Guotao.,Chen, Weidong.,Chua, Yong Shen.,...&Chen, Ping.(2016).Synthesis, structure and the dehydrogenation mechanism of calcium amidoborane hydrazinates.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,18(1),244-251. |
| MLA | Li, Zhao,et al."Synthesis, structure and the dehydrogenation mechanism of calcium amidoborane hydrazinates".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 18.1(2016):244-251. |
入库方式： OAI收割
来源：大连化学物理研究所
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