用碱士金属(Mg,Ca,Sr和Ba)通过浸渍法对SAPO-34分子筛进行了改性,在常压连续流动固定床反应器上研究了其对甲醇制烯烃(MTO)反应的催化性能.结果表明,0.5%～1%Ba的添加明显提高了SAPO-34的抗积炭失活能力,使催化剂在WHSV=2 h-1和450℃条件下的催化寿命相对延长了27%.
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