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POSSIBILITIES AND LIMITS OF TEXTURE PROPERTIES CHARACTERIZATION

机译:纹理特性表征的可能性和限制

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A series of microporous-mesoporous mechanical mixtures of zeolite NaY and γ-alumina was used for testing the applicability of the modified (three-parameter) BET isotherm equation. Nitrogen adsorption isotherms (77 K) of NaY+ γ-alumina samples were analyzed by this equation and the results compared with the independent textural information obtained from t-plots (with the standard isotherm of nonporous α-alumina and the standard isotherms of Lecloux-Pirard). It appeared that the use of the modified BET equation as same as the standard t-plot method provided good micropore volumes and mesopore surface areas contrary to the incorrect results of the classic BET equation.
机译:使用一系列NaY和γ-氧化铝沸石的微孔-介孔机械混合物测试了修正的(三参数)BET等温线方程的适用性。用该方程分析NaY +γ-氧化铝样品的氮吸附等温线(77 K),并将结果与​​从t曲线获得的独立纹理信息(无孔α-氧化铝的标准等温线和Lecloux-Pirard的标准等温线)进行比较。 )。似乎与标准t绘图方法相同,使用改良的BET方程可提供良好的微孔体积和中孔表面积,这与经典BET方程的错误结果相反。

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