固体の小表面積の迅速測定法

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書誌事項

タイトル別名
  • New Method of Rapid Measuren ent of Very Small Surface Area of Solids
  • コタイ ノ ショウヒョウメンセキ ノ ジンソク ソクテイホウ

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説明

The new device for rapid and precise measurement of small surface area (10100cm2) of solids by using the xenon adsorption has been constructed. The aparatus includes a system capable of obtaining pressure 10-9 torr by a sputter ion pump and two pressure measuring portions being denominated as “adsorption cell” (250 cc) and “reference cell” (160 cc), respectively. After the sample being outgassed and cooled to the liquid nitrogen temperature, xenon gas is admitted into the adsorption cell from the reference cell in which xenon gas has been stored 25×10-2 cc STP. The amount of adsorbed gas can be estimated from the change in pressure of each portion. Thus it usually takes only half an hour to obtain a BET plot with four or five points, and the reproducibilily in the determination of the surface areas has been found to be better than 2%. The several examples show by the present method have been demonstrated on glass and quartz surfaces. These results a good agreement with those by other workers.

収録刊行物

  • 真空

    真空 13 (10), 327-332, 1970

    一般社団法人 日本真空学会

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