化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2010年
2期
304-307,337
,共5页
汪承磊%丁伟中%张玉文%周宇鼎%黄少卿%刘旭%鲁雄刚
汪承磊%丁偉中%張玉文%週宇鼎%黃少卿%劉旭%魯雄剛
왕승뢰%정위중%장옥문%주우정%황소경%류욱%로웅강
BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)%透氧膜%体扩散%表面过程
BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)%透氧膜%體擴散%錶麵過程
BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)%투양막%체확산%표면과정
BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)%oxygen permeation membrane%body diffusion%surface reaction
采用高温固相反应法制备钙钛矿型混合导体BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)(BCFN)透氧膜,并通过SEM、XRD、O_2-TPD等手段进行表征.实验考察了空气速率、氦气速率及温度对BCFN膜片透氧量的影响.研究发现膜的透氧量取决于两侧的氧分压差和氧离子在体相内的扩散.XRD的结果表明使用前后材料的相结构没有变化,证明BCFN作为透氧膜材料具有实际应用前景.
採用高溫固相反應法製備鈣鈦礦型混閤導體BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)(BCFN)透氧膜,併通過SEM、XRD、O_2-TPD等手段進行錶徵.實驗攷察瞭空氣速率、氦氣速率及溫度對BCFN膜片透氧量的影響.研究髮現膜的透氧量取決于兩側的氧分壓差和氧離子在體相內的擴散.XRD的結果錶明使用前後材料的相結構沒有變化,證明BCFN作為透氧膜材料具有實際應用前景.
채용고온고상반응법제비개태광형혼합도체BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)(BCFN)투양막,병통과SEM、XRD、O_2-TPD등수단진행표정.실험고찰료공기속솔、양기속솔급온도대BCFN막편투양량적영향.연구발현막적투양량취결우량측적양분압차화양리자재체상내적확산.XRD적결과표명사용전후재료적상결구몰유변화,증명BCFN작위투양막재료구유실제응용전경.
Perovskite-type mixed conductor BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ) (BCFN) was synthesised through solid state reaction and charactered by SEM, XRD and O_2-TPD. Influence of flow rate (Air or Helium)and temperature on the oxygen permeability of the BCFN membrane was investigated. It was found that the oxygen permeation is determined by the oxygen potential on both sides and body diffusion of the BCFN membrane. XRD results for both the freshly prepared and used membranes showed that the BCFN has phase stability and has perspect for practical application as oxygen permeation membrane.
