CAJ | 학술논문

分别采用氮气物理吸附法和压汞法考察了同类型的FCC催化剂老化前后的孔径分布情况。结果表明，氮气物理吸附法应用BJH模型可以表征2~100 nm的孔，但对大于100 nm的孔计算不准确。压汞法使用Wasburn公式能弥补氮气吸附法在大孔孔径分析方面的不足，两者结合可以有效表征催化剂的中大孔孔径分布。
분별채용담기물리흡부법화압홍법고찰료동류형적FCC최화제노화전후적공경분포정황。결과표명，담기물리흡부법응용BJH모형가이표정2~100 nm적공，단대대우100 nm적공계산불준학。압홍법사용Wasburn공식능미보담기흡부법재대공공경분석방면적불족，량자결합가이유효표정최화제적중대공공경분포。
Nitrogen physical adsorption method and mercury intrusion method were used respectively to investigate pore size distribution of different types of FCC catalysts before and after they were aged. The result showed,the nitrogen physical adsorption method using BJH model can characterize the pores of 2~100 nm,but its calculation is not accurate for pores larger than 100 nm. The mercury intrusion method using Wasburn formula can cover the shortage of nitrogen physical adsorption method in term of large bore size analysis,and the combination of the two methods can effectively characterize the middle and large bore size distribution of catalysts.