The Dehydrogenation Reactions and Kinetics of 2LiBH(4)-Al Composite
文献类型：期刊论文
| 作者 | Zhang, Yao1; Tian, Qifeng2,3; Zhang, Jian1; Liu, Shu-Sheng1; Sun, Li-Xian1 |
| 刊名 | journal of physical chemistry c
 |
| 出版日期 | 2009-10-22 |
| 卷号 | 113期号:42页码:18424-18430 |
| 英文摘要 | the dehydrogenation reactions and kinetics of the 2libh(4)-al composite were investigated by means of thermogravimetry allied with mass spectroscopy, differential scanning calorimetry, x-ray diffraction. fourier transform infrared analysis, and isothermal dehydrogenation measurements, according to the analysis of the experimental results, the dehydrogenation of 2libh(4)-al can be roughly divided into three stages that range from 553 to 648 k, 648 to 773 k, and 773 to 823 k. in the initial stage, it was observed that the decomposition of libh4 occurs simultaneously with the formation of alb2. it was also found that the 3d diffusion mechanism in the form of the jander equation dominates the kinetics of this stage. the second stage is the major dehydrogenation process. the well,fitted curves of the isothermal dehydrogenation by the prout-tompkins equation prove that this stage is mainly dominated by an autocatalysis reaction. the suggested reaction 2libh(4) + alb2 -> 2lih + al + 4b + 3h(2) takes place simultaneously with the reaction 2libh(4) + al -> 2lih + alb2 + 3h(2), alb2 and al serve not only as products but also as reagents for the decomposition of libh4. within this stage, the activation energy is remarkably reduced to 94 +/- 5 kj/mol from that of bulk libh4. at the third stage, when the temperature is above 798 k, lial call be formed due. to the decomposition of lih. this stage was still characterized by the autocatalysis reaction. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | reversible hydrogen storage ; libh4 ; decomposition ; destabilization ; borohydrides ; imides ; mgh2 ; al |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000270671100061 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141281]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Catalysis & New Mat Aerosp, Mat & Thermochem Grp, Dalian 116023, Peoples R China 2.Wuhan Univ Sci & Engn, Key Lab Green Chem Proc, Minist Educ, Wuhan 430073, Peoples R China 3.Wuhan Inst Technol, Hubei Key Lab Novel Reactor & Green Chem Technol, Wuhan 430073, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yao,Tian, Qifeng,Zhang, Jian,et al. The Dehydrogenation Reactions and Kinetics of 2LiBH(4)-Al Composite[J]. journal of physical chemistry c,2009,113(42):18424-18430. |
| APA | Zhang, Yao,Tian, Qifeng,Zhang, Jian,Liu, Shu-Sheng,&Sun, Li-Xian.(2009).The Dehydrogenation Reactions and Kinetics of 2LiBH(4)-Al Composite.journal of physical chemistry c,113(42),18424-18430. |
| MLA | Zhang, Yao,et al."The Dehydrogenation Reactions and Kinetics of 2LiBH(4)-Al Composite".journal of physical chemistry c 113.42(2009):18424-18430. |
入库方式： OAI收割
来源：大连化学物理研究所
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