1.1 形成的催化剂、催化剂载体或催化剂片的抗破碎性是通过将一定量的样品滴入25%的溶液中来确定的 1英尺长 在里面钢板上的内径管。 1.2 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、健康和环境实践，并确定监管限制的适用性。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本指南旨在提供有关成型催化剂或催化剂载体在使用过程中抵抗粒径减小的能力的信息。它可以单独使用，也可以与其他方法结合使用，以评估催化材料的完整性，例如测试方法 D4058号 和 D7084 . 5.2 样品几何形状没有已知限制，因为球体、颗粒和空心圆柱体适合测试。 5.3 如前所述，本指南适用于约 1. / 8. 在里面到大约 3. / 4. 在里面它也可以用于较大的零件，但这需要使用较大直径的管道。 5.4 本指南适用于规范验收、制造控制以及研发过程。

1.1 The resistance to breakage of formed catalysts, catalyst carriers, or catalyst pieces is determined by dropping a quantity of sample through a 25 ft length of 1 in. internal diameter pipe onto a steel plate. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This guide is intended to provide information concerning the ability of formed catalysts or catalyst carriers to resist particle size reduction during use. It can be used by itself or in conjunction with other methods to assess catalytic material integrity, such as Test Methods D4058 and D7084 . 5.2 There are no known restrictions on sample geometry, as spheres, pellets, and hollow cylinders are suitable for testing. 5.3 This guide, as written, is suitable for use for catalytic materials from about 1 / 8 in. to about 3 / 4 in. It can also be used for larger parts, but this requires using a larger diameter pipe. 5.4 This guide is suitable for specification acceptance, manufacturing control, and research and development processes.