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    • 11. 发明授权
    • Amperometric gas sensor to selectively determine the partial pressures
of a gas
    • 电流式气体传感器,用于选择性地确定气体的分压
    • US5322601A
    • 1994-06-21
    • US868145
    • 1992-04-14
    • Jun LiuWerner Weppner
    • Jun LiuWerner Weppner
    • G01N27/416G01N27/407G01N27/26
    • G01N27/4073
    • The invention concerns as amperometric gas sensor for the selective deteration with high accuracy of a gas partial pressures. Such a gas sensor includes a solid electrolyte and inert electrodes. The solid electrolyte, contained in the sensor, is selected in such a way that when an electrical current or voltage is applied, ions contained in the electrolyte form a reaction product with the gas to be determined in a secondary equilibrium reaction and with generation of an electrically measurable signal. Preferred solid electrolytes are Na.sup.+ -.beta." aluminum oxide, NASICON, cubic stabilized zirconium oxide and polycrystals of tetragonal zirconium oxide. A method for the selective determination of gases using such electrodes also is described. Preferably an electrical current or voltage source shall be used which feeds a periodic, especially a sawtooth or sinusoidal signal, to the solid electrolyte, as a result of which the formed reaction product is decomposed to the same extent it was previously built up.
    • 本发明涉及用于气体分压的高精度的选择性测定的电流式气体传感器。 这种气体传感器包括固体电解质和惰性电极。 包含在传感器中的固体电解质被选择成使得当施加电流或电压时,包含在电解质中的离子与待在二次平衡反应中确定的气体形成反应产物,并产生 电可测信号。 优选的固体电解质是Na +-β“氧化铝,NASICON,立方稳定氧化锆和四方晶氧化锆的多晶体。 还描述了使用这种电极选择性地确定气体的方法。 应该使用一个电流或电压源,它将周期性的,特别是锯齿波或正弦信号馈送到固体电解质,结果形成的反应产物分解成与之前建立的相同的程度。
    • 17. 发明授权
    • Process for the production of K- or Rb-.beta.
    • 生产K-或Rb-β“ - 或 - β - 氧化铝离子导体的方法
    • US5474959A
    • 1995-12-12
    • US219191
    • 1994-03-28
    • Gunter SchaferArnold van ZylWerner Weppner
    • Gunter SchaferArnold van ZylWerner Weppner
    • C01F7/02C01G51/00C01G53/00C04B35/113C04B35/626
    • C04B35/626C01F7/028C04B35/113
    • The present invention provides a process for the production of a K- or Rb-.beta."- or -.beta.-aluminum oxide powder preparation, wherein a cubic densely packed aluminum oxide (.gamma.-aluminum oxide) or a precursor thereof is subjected to attrition together with a doping material or a precursor thereof, the so obtained mixture is calcined in an oxygen-containing atmosphere, potassium oxide or rubidium oxide or a precursor of these compounds is added to the calcination product obtained, the mixture is subjected to attrition and then calcined in an oxygen-containing atmosphere at a temperature greater than 900.degree. C. The present invention also provides a process for the production of a ceramic formed body in which a powder obtained by the above process is converted by attrition, isostatic pressing and sintering into a ceramic formed body. Such a ceramic formed body can be used as an ion conductor.
    • 本发明提供了一种生产K-或Rb-β“ - 或β-二氧化铝粉末制备方法,其中立方密集填充的氧化铝(γ-氧化铝)或其前体被磨损 与掺杂材料或其前体一起,将所得混合物在含氧气氛中煅烧,将氧化钾或氧化铷或这些化合物的前体加入到所获得的煅烧产物中,将混合物磨损,然后 在含氧气氛中在大于900℃的温度下煅烧。本发明还提供一种陶瓷成形体的制造方法,其中通过磨耗,等静压和烧结将上述方法获得的粉末转化为 陶瓷成型体。 这种陶瓷成形体可以用作离子导体。