کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1280395 | 1497683 | 2006 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of new ferrite, Al–Cu ferrite, and its oxygen deficiency for solar H2 generation from H2O Synthesis of new ferrite, Al–Cu ferrite, and its oxygen deficiency for solar H2 generation from H2O](/preview/png/1280395.png)
The solar H2 generation with the oxygen deficiency of Al–Cu ferrite (AlaCubFecO4AlaCubFecO4, 3a+b+3c=83a+b+3c=8) has been studied for application to conversion of solar thermal energy to chemical energy of H2. The Al–Cu ferrite was newly synthesized with different Al:Cu:Fe mole ratios from the co-precipitate of their nitrates. The Al–Cu ferrite (Al:Cu:Fe mole ratios = 0.43:0.43:2.14) prepared at 1473 K was the single phase of the spinel type compound. The cyclic two-step water splitting reactions (O2 releasing and H2 generation reactions) using the Al–Cu ferrite (Al:Cu:Fe==0.43:0.43:2.14) gave the O2 and H2 yields of 1.6 and 0.37%, respectively. In the O2 releasing reaction, the Al–Cu ferrite changes to the oxygen deficient form of spinel structure. The temperature (T=1673K) of the O2 releasing reaction with Al–Cu ferrite was lowered by ca. 100 K than those of Zn ferrite and Ni ferrite systems.
Journal: International Journal of Hydrogen Energy - Volume 31, Issue 15, December 2006, Pages 2256–2265