Process for refining nitrogen trifluoride gas using alkali earth metal exchanged and/or impregnated

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The present invention refers to method relates to pyridinium methylcephem compound, than on-earth metal is ion exchange and/or impregnated after heating at a 150 ∼ 600 °C ∼ 100 ingredient 30 in processing zeolite 3A it buys the fire anger carbon the through a column a charging a (CF 4) pyridinium methylcephem containing (NF 3) by by venting of the gas, pyridinium methylcephem including the selectively adsorbed only pyridinium methylcephem compound relates to method, pyridinium methylcephem by the present invention from a gas the scavenging effect it buys the fire anger carbon method by using the mask pattern..