標準號：BS 4359-4-1995
中文標準名稱：粉末表面系數的測定.第4部分:使用氣體表面吸附技術測定金屬表面積推薦方法
英文標準名稱：Determination of the specific surface area of powders - Recommendations for methods of determination of metal surface area using gas adsorption techniques
標準類型：H16
發布日期：1995/4/15 12:00:00
實施日期：1995/4/15 12:00:00
中國標準分類號：H16
國際標準分類號：77.160
適用范圍：This Part of BS 4359 describes recommended methods for the determination of metal surface area using gas adsorption. They are suitable for supported monometallic catalysts where the metal surface area differs from the total surface area. These methods may also be suitable for other metal catalysts, such as some Raney materials. Specific recommendations are given for the determination of metal surface area of nickel, palladium, platinum and copper. Information on the extension of these methods to other metals in Groups VIII and IB of the periodic table is given in annex A. Recommendations are made regarding the most suitable gas and test methods for a given metal/support combination. Both chemisorption methods and those which employ surface reaction (or titration) are described. Volumetric or flow techniques may be used to determine the amount of gas chemisorbed. Recommendations are given to correct for any reversible adsorption detected using the volumetric technique.