Ce_(0.8)Y_(0.2)O_(1.9)-Ca_3(PO_4)_2-K_3PO_4复合电解质在中温区的质子导电性及在常压合成氨中的应用  

Doped Ceria-Ca_3(PO_4)_2-K_3PO_4 Composite Electrolyte: Proton Conductivity at Intermediate Temperature and Application in Atmospheric Pressure Ammonia Synthesis

作　　者：王本辉[1] 刘瑞泉[1] 王吉德[1] 李志杰[1] 谢亚红[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《无机化学学报》2005年第10期1551-1555,共5页Chinese Journal of Inorganic Chemistry

基　　金：新疆高校科研重点项目(No.XJedu2004I11)资助

摘　　要：A precursor of Ce0.8Y0.2O1.9(YDC) solid electrolyte was synthesized by the gol-gel method. YDC and phosphates powders were prepared by mixing the YDC and phosphates according to different weight ratios. The mixtures of the YDC and binary phosphates were ground and sintered at 1 400 ℃. The proton conductivity in solid electrolyte of the sintered samples was examined using electrochemical methods at 400～800 ℃. Ammonia was synthesized from nitrogen and hydrogen at atmospheric pressure in the solid state proton conducting cell reactor. The optimal condition for the ammonia production was determined. The result indicated that composite electrolyte of 80wt% YDC: 20wt% binary phosphates as proton conductor could obtain the highest ionic conductivity and ammonia production rate among the four samples, the rate of evolution of ammonia was up to 9.5 × 10-9 mol·s-1·cm-2.A precursor of Ce0.8Y0.2O1.9（YDC） solid electrolyte was synthesized by the gol-gel method. YDC and phosphates powders were prepared by mixing the YDC and phosphates according to different weight ratios. The mixtures of the YDC and binary phosphates were ground and sintered at 1 400 ℃. The proton conductivity in solid electrolyte of the sintered samples was examined using electrochemical methods at 400-800 ℃. Ammonia was synthesized from nitrogen and hydrogen at atmospheric pressure in the solid state proton conducting cell reactor. The optimal condition for the ammonia production was determined. The result indicated that composite electrolyte of 80wt% YDC： 20wt% binary phosphates as proton conductor could obtain the highest ionic conductivity and ammonia production rate among the four samples, the rate of evolution of ammonia was up to 9.5 × 10^-9 mol·s^-1·cm^-2.

关 键 词：复合电解质 离子电导率 常压合成氨 YDC 

分 类 号：O614.33[理学—无机化学]