1.1 该试验方法包括测定催化剂和催化剂载体的比表面积，其范围为0.05 m 2. /g至10 m 2. /g。体积测量系统用于获得至少三个落入线性范围内的数据点 赌注 区域 1.2 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全和健康措施，并确定监管限制的适用性。 ===意义和用途====== 5.1 已发现该试验方法可用于测定催化剂和催化剂载体的比表面积，其范围为0.05 m 2. /g至10 m 2. /g用于催化剂评估中的材料规范、制造控制和研发。 催化剂和催化剂载体表面积大于10的测定 m 2. /g在测试方法中进行了说明 D3663 –催化剂和催化剂载体的表面积–适用于比表面积超过1 m的大多数样品 2. /g。

1.1 This test method covers the determination of the specific surface area of catalysts and catalyst carriers in the range from 0.05 m 2 /g to 10 m 2 /g. A volumetric measuring system is used to obtain at least three data points which fall within the linear BET region. 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 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 This test method has been found useful for the determination of the specific surface area of catalysts and catalyst carriers in the range from 0.05 m 2 /g to 10 m 2 /g for materials specification, manufacturing control, and research and development in the evaluation of catalysts. The determination of surface area of catalysts and catalyst carriers above 10 m 2 /g is addressed in Test Method D3663 – Surface Area of Catalyst and Catalyst Carriers – and is appropriate for most samples with specific surface areas above 1 m 2 /g.