1.1 本试验方法包括通过压汞法测定催化剂和催化剂载体的孔体积分布。适用的孔隙视直径范围由测试仪器的操作压力范围确定。该范围通常在约100和0.003μm（3 nm）的表观孔径之间。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 警告 -许多监管机构已将汞指定为一种有害物质，可导致中枢神经系统、肾脏和肝脏损伤。汞或其蒸汽可能对健康有害，并对材料具有腐蚀性。 处理汞和含汞产品时应小心。有关详细信息，请参阅适用的产品材料安全数据表（MSDS）和EPA网站-http://www.epa.gov/mercury/faq.htm-了解更多信息。用户应意识到，法律可能禁止向您所在的州或国家销售汞和/或含汞产品。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 第节给出了具体的危险信息 8. . ====意义和用途====== 5.1 本试验方法旨在确定催化剂和催化剂载体中孔的体积分布与孔入口的表观直径有关。一般来说，催化剂中孔隙的大小和体积都会影响其性能。因此，孔体积分布有助于理解催化剂的性能，并指定可以预期以预期方式执行的催化剂。

1.1 This test method covers the determination of the pore volume distributions of catalysts and catalyst carriers by the method of mercury intrusion porosimetry. The range of apparent diameters of pores for which it is applicable is fixed by the operant pressure range of the testing instrument. This range is typically between apparent pore entrance diameters of about 100 and 0.003 μm (3 nm). 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 WARNING —Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law. 1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard information is given in Section 8 . ====== Significance And Use ====== 5.1 This test method is intended to determine the volume distribution of pores in catalysts and catalyst carriers with respect to the apparent diameter of the entrances to the pores. In general, both the size and volume of pores in a catalyst affect its performance. Thus, the pore volume distribution is useful in understanding a catalyst's performance and in specifying a catalyst that can be expected to perform in a desired manner.