T/CPCIF 0140-2021 Active Group standards

T/CPCIF 0140-2021 Catalyst support, determination of specific surface area and pore volume of illite by nitrogen adsorption method

Publish Date: 2021-10-20 Implement Date: 2022-01-21 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CPCIF 0140-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Chemical industry

ICS Name: Analysis Chemistry Comprehensive

Publish Date: 2021-10-20

Implement Date: 2022-01-21

Scope

Scope: This document specifies the method for determining the specific surface area and pore volume of catalyst supports using the nitrogen adsorption method. This document is applicable to catalyst supports with a specific surface area greater than 200.0 m2/g and a pore volume greater than 0.100 cm3/g; Main technical content: In a gas system, the specific surface area of the sample (the specific surface area of the external and internal pores of the particles) will undergo physical adsorption at low temperatures. When the adsorption reaches equilibrium, the equilibrium adsorption pressure and the amount of adsorbed gas are measured, and the specific surface area is calculated according to the BET parameter equation; when the relative pressure p/p0 = 0.98, the pore volume of the sample is calculated based on the volume of nitrogen gas adsorbed.