Preparation of modified Ce-SAPO-34 catalysts and their catalytic performances of methanol to olefins
作者： Shuxun Tian , Shengfu Ji , Dandan Lü , Bingyang Bai , Qi Sun
DOI: 10.1016/S2095-4956(13)60079-0
关键词:
摘要: Abstract The modified Ce-SAPO-34 catalysts were prepared with three methods, i.e., the liquid ion exchange air calcination, impregnation calcination and steam methods. catalytic performances of for methanol to olefins investigated. properties characterized using XRD, BET, XRF, FT-IR NH3-TPD. results indicated that compared SAPO-34 catalyst prolonged lifetime by 40 min improved selectivity ethylene 5% (mol) showed best modification effect, prolonging 70 improving 10% (mol). similar behaviour as catalyst. It was verified porous structure surface acidity these determined their behaviors.
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