Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ASTM D4780-12(2017)e1
Năm ban hành 2017
Publication date
Tình trạng
A - Còn hiệu lực
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Tên tiếng Anh
Title in English Standard Test Method for Determination of Low Surface Area of Catalysts and Catalyst Carriers by Multipoint Krypton Adsorption
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 5
Giá:
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Phạm vi áp dụng
Scope of standard 1.1 This test method covers the determination of the specific surface area of catalysts and catalyst carriers in the range from 0.05 to 10 m²/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.
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