CAJ | 학술논문

以 NaY 分子筛为原料，草酸为扩孔剂，制得改性 NaY 分子筛作为载体，通过等体积浸渍 AgNO3，焙烧制得π络合吸附剂。并通过 XRD、FTIR 表征了分子筛结构，BET 测定了分子筛比表面积和孔径；通过吸附乙烯，考察了改性 NaY 分子筛空白样乙烯吸附量、负载30% AgNO3乙烯吸附量、75℃真空脱附后乙烯吸附量。结果表明，采用草酸对 NaY 分子筛脱铝扩孔后，孔径达到1.4 nm，乙烯吸附曲线变平缓；改性π络合吸附剂比未改性π络合吸附剂更容易脱附，在75℃真空脱附条件后，改性π络合吸附剂吸附量达到首次吸附量95%以上。
이 NaY 분자사위원료，초산위확공제，제득개성 NaY 분자사작위재체，통과등체적침지 AgNO3，배소제득π락합흡부제。병통과 XRD、FTIR 표정료분자사결구，BET 측정료분자사비표면적화공경；통과흡부을희，고찰료개성 NaY 분자사공백양을희흡부량、부재30% AgNO3을희흡부량、75℃진공탈부후을희흡부량。결과표명，채용초산대 NaY 분자사탈려확공후，공경체도1.4 nm，을희흡부곡선변평완；개성π락합흡부제비미개성π락합흡부제경용역탈부，재75℃진공탈부조건후，개성π락합흡부제흡부량체도수차흡부량95%이상。
The π-complex adsorbent was synthesized by NaY zeolite modified by oxalic acid and sequen-tially loaded with silver nitrate through equivalent-volume impregnation and calcined. The surface area and pore diameter was measured by BET and the structure is characterized by XRD and FTIR;The ad-sorption of ethylene on modified NaY zeolite,modified NaY zeolite loaded with 30% AgNO3 ,and π-com-plex adsorbent which was desorbed at the temperature of 75 ℃ in vacuum were studied. The results showed that the pore diameter of NaY zeolite modified by oxalic acid can reach 1. 4 nm,the adsorption amount of ethylene on pore-expanded NaY zeolite grows more slowly;The modified AgNO3 / NaY can be desorbed more easily than AgNO3 / NaY adsorbent without modification. The adsorption capacity can achieve 95% of the amount of new adsorbent after desorbed at the temperature of 75 ℃ in vacuum.