CAJ | 학술논문

研究以 NaY 分子筛粉与 Al2 O3混合成型后离子交换，引入 AlF3和少量稀土（La、Ce）增加催化剂的酸性以提高脱烯烃性能，制备出简单高效的非临氢芳烃脱烯烃催化剂。采用 NH3- TPD、XRF、Py - IR 和 XRD 对催化剂进行表征，结果表明，引入 AlF3后，催化剂的总酸量增加和 L 酸酸量增加，B 酸酸量减少；引入适量 La 和 Ce 组分后，催化剂上中强酸量和 B 酸酸量增加。以 La 和 Ce改性的催化剂对溴指数540.0 mg·（100g 油）-1的原料脱烯烃，产品分布基本无变化，溴指数约稳定在9.0 mg·（100g 油）-1。改性催化剂总酸量多、合适中强酸量以及适当提高 B 酸酸量有利于催化剂脱烯烃性能。
연구이 NaY 분자사분여 Al2 O3혼합성형후리자교환，인입 AlF3화소량희토（La、Ce）증가최화제적산성이제고탈희경성능，제비출간단고효적비림경방경탈희경최화제。채용 NH3- TPD、XRF、Py - IR 화 XRD 대최화제진행표정，결과표명，인입 AlF3후，최화제적총산량증가화 L 산산량증가，B 산산량감소；인입괄량 La 화 Ce 조분후，최화제상중강산량화 B 산산량증가。이 La 화 Ce개성적최화제대추지수540.0 mg·（100g 유）-1적원료탈희경，산품분포기본무변화，추지수약은정재9.0 mg·（100g 유）-1。개성최화제총산량다、합괄중강산량이급괄당제고 B 산산량유리우최화제탈희경성능。
Using NaY zeolite as the main active component and alumina as the binder,and introducing AlF3 and rare earth(La,Ce)to improve the acid amount of the catalysts,the catalysts for removing olefins in aromatics without the presence of hydrogen was prepared. The catalysts were characterized by NH3-TPD,XRF,Py-IR and XRD. The results showed that the total acid amount and the amount of Lewis acid of the catalyst were increased,and the amount of Brnsted acid were reduced by adding AlF3;the amount of medium strong acid and Brnsted acid of the catalysts were enhanced by introducing 0. 539% La2 O3 and 0.539%CeO2. The catalysts modified by La and Ce had the best effect of removing olefins in aromatics with bromine index of 540.0 mg·(100g-oil)-1. The bromine index could stabilize at 9. 0 mg·(100g-oil)-1 ,and the distribution of products was unchanged. The modified catalyst with more total amount of acid,suitable amount of mediumstrong acid and Brnsted acid had good performance for the removal of olefins in aromatics.