采用硝酸盐-柠檬酸法制备了 BaZr0.1 Ce0.7 Y0.2 O3-α(BZCY)质子电解质及GdBaFeNiO5+δ(GBFN)阴极材料,用浆料旋涂法结合后续的热处理在NiO-BZCY阳极支撑体上制备致密的BZCY电解质薄膜,在电解质薄膜上制备多孔性GBFN阴极膜,成功地组装成合成氨膜反应器.以氢、氮气为反应气体,通过电解方法进行了常压合成氨试验.结果显示,BZCY及GBFN分别具有钙钛矿型及双钙钛矿型结构,NiO与BZ-CY具有良好的化学兼容性,合成氨产率高达1.63 ×10-8 mol·s-1·cm-2,高于迄今所报道的类似方法的合成氨产率.这与BZCY电解质膜优良的导电性能、GBFN膜优良的极化性能密切相关.Ag对GBFN的修饰也有利于氨产率的提高.
参考文献
| [1] | Amar, I.A.;Lan, R.;Petit, C.T.G.;Tao, S. .Solid-state electrochemical synthesis of ammonia: A review[J].Journal of solid state electrochemistry,2011(9):1845-1860. |
| [2] | Mamellos G;Stoukides M .Ammonia synthesis at atmospheric pressure[J].Science,1998,282:98. |
| [3] | Xie YH;Wang JE;Liu RQ;Su XT;Sun ZP;Li ZJ .Preparation of La1.9Ca0.1Zr2O6.95 with pyrochlore structure and its application in synthesis of ammonia at atmospheric pressure[J].Solid state ionics,2004(1/2):117-121. |
| [4] | Wang J D;Xie Y H;Zhang Z F;Liu R Q Li Z J .Protonic conduction in Ca2 +-doped La2 M2 O7(M =Ce,Zr)with its application to ammonia synthesis electrochemically[J].Materials Research Bulletin,2005,40:1294. |
| [5] | Liu RQ;Xie YH;Wang JD;Li ZJ;Wang BH .Synthesis of ammonia at atmospheric pressure with Ce0.8M0.2O2-delta (M=La, Y, Gd, Sm) and their proton conduction at intermediate temperature[J].Solid state ionics,2006(1/2):73-76. |
| [6] | Li ZJ;Liu RQ;Wang JD;Xie YH;Yue F .Preparation of BaCe0.8Gd0.2O3-delta by the citrate method and its application in the synthesis of ammonia at atmospheric pressure[J].Journal of solid state electrochemistry,2005(4):201-204. |
| [7] | 王进,刘瑞泉.SDC和SSC在低温常压电化学合成氨中的性能研究[J].化学学报,2008(07):717-721. |
| [8] | 张蔚,宿新泰,刘瑞泉.多层膜结构BaCe0.9Nd0.1O3-δ的制备及其在常压合成氨中的应用[J].中国稀土学报,2006(z1):102-106. |
| [9] | 李志杰,王吉德,刘瑞泉,谢亚红.铈、钇双掺杂钙钛矿型复合氧化物的合成及其在常压合成氨中的应用[J].中国稀土学报,2005(01):62-67. |
| [10] | Zhang F;Yang Q;Pan B;Xu R,Wang H T,Ma G L .Proton conduction in La0.9 Sr0 1 Ga0 8 Mg0 2 O3-α ceramic prepared via microemulsion method and its application in ammonia synthesis at atmospheric pressure[J].Materials Letters,2007,61:4144. |
| [11] | Guo YX;Liu BX;Yang Q;Chen C;Wang WB;Ma GL .Preparation via microemulsion method and proton conduction at intermediate-temperature of BaCe1-xYxO3-alpha[J].Electrochemistry communications,2009(1):153-156. |
| [12] | Yin, J.;Wang, X.;Xu, J.;Wang, H.;Zhang, F.;Ma, G. .Ionic conduction in BaCe_(0.85 -X)Zr_xEr _(0.15)O_(3-α) and its application to ammonia synthesis at atmospheric pressure[J].Solid state ionics,2011(1):6-10. |
| [13] | 陈成,王文宝,马桂林.La0.9M0.1Ga0.8Mg0.2O3-α的中温质子导电性及其在常压合成氨中的应用[J].化学学报,2009(07):623-628. |
| [14] | Chen C;Ma G L .Proton conduction in BaCe1-xGd,xO3-α at intermediate temperature and its application to synthesis of ammonia at atmospheric pressure[J].Journal of Alloys and Compounds,2009,485:67. |
| [15] | Wang W B;Cao X B;Gao W J;Zhang F,Wang H T,Ma G L .Ammonia synthesis at atmospheric pressure using a reactor with thin solid electrolyte BaCe0.85 Y0 15 O3-α membrane[J].Journal of Membrane Science,2010,360:397. |
| [16] | Zuo C D;Zha S W;Liu M L;Hatauo M,Uchiyama M .Ba(Zr0.1 Ce0 7 Y0 2)O3-δ as an electrolyte for low-temperature solidoxide fuel cells[J].Advanced Materials,2006,18:3318. |
| [17] | Yang Z J;Ding Z L;Xiao J;Zhang H M Ma G L Zhou Z F .A novel cobalt-free layered perovskite-type GdBaFeNiO5+δ cathode material for proton-conducting intermediate temperature solid oxide fuel cells[J].Journal of Power Sources,2012,220:15. |
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%