采用XRD、SEM等手段研究了水解时间对LiH组织结构的影响.研究表明:水解时间为2～16 h时,LiH的水解速率较快,水解增重随时间延长几乎呈直线增长;水解时间为16～24 h时,LiH水解平均增重大幅降低;水解前后,LiH主要由LiH、LiOH及少量的Li、H2及LiNO3组成,随着时间延长,LiH含量由80.9％(0 h)降低至71.3％(24 h),LiOH的含量由11.0％(0 h)增加至21.5％(24 h);未水解时,LiH表面由LiOH及少量白色颗粒状LiOH· H2O组成,随水解时间延长,LiOH· H2O含量逐渐增加,水解24 h后,LiH表面出现裂纹,LiOH与LiH的密度差异是其开裂的主要原因.
参考文献
| [1] | V.C.Y. Kong;F.R. Foulkes;D.W. Kirk.Development of hydrogen storage for fuel cell generators. I: Hydrogen generation using hydrolysis hydrides[J].International journal of hydrogen energy,19997(7):665-675. |
| [2] | V.C.Y. Kong;D.W. Kirk;F.R. Foulkes;J.T. Hinatsu.Development of hydrogen storage for fuel cell generators II: utilization of calcium hydride and lithium hydride[J].International journal of hydrogen energy,20032(2):205-214. |
| [3] | Jun Lu;Zhigang Zak Fang;Hong Yong Sohn.A hybrid method for hydrogen storage and generation from water[J].Journal of Power Sources,20072(2):853-858. |
| [4] | 李赣;陆光达;敬文勇;秦城.氘化锂粉末与O2,CO2和水汽的反应动力学研究[J].核化学与放射化学,2004(2):99-102. |
| [5] | Dinh LN.;McLean W.;Schildbach MA.;LeMay JD.;Siekhaus WJ.;Balooch M..The nature and effects of the thermal stability of lithium hydroxide[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,20032/3(2/3):175-188. |
| [6] | Dinh LN;Grant DM;Schildbach MA;Smith RA;Siekhaus WJ;Balazs B;Leckey JH;Kirkpatrick JR;McLean W.Kinetic measurement and prediction of the hydrogen outgassing from the polycrystalline LiH/Li2O/LiOH system[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,20051/2(1/2):31-43. |
| [7] | Balooch M.;Dinh LN.;Calef DF..The reaction kinetics of lithium salt with water vapor[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,20022/3(2/3):200-209. |
| [8] | 肖洒;帅茂兵;褚明福.LiH水解产物及其动力学研究进展[J].材料导报,2010(z2):321-325. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%