针对SAPO-34在甲醇制烯烃过程中易失活的问题，考察了水热合成过程中在凝胶中添加不同质量分数的FW-200对SAPO-34的孔径、形貌、酸性及甲醇制烯烃性能的影响。并利用XRD、SEM、NH₃-TPD等手段对合成材料进行表征。以甲醇为原料对mes-SAPO-34分子筛的MTO性能进行了研究。结果表明，当碳模板的质量分数达到8%时，SAPO-34分子筛的晶体结构与结晶度未受到明显的影响，此时分子筛拥有最多的介孔和最大的介孔孔容；酸性分布最佳，在甲醇制烯烃的反应中表现出更为优异的性能，催化剂的寿命最长，双烯收率达到86.77%。

In order to solve the problem of the deactivation of SAPO-34 in the process of methanol to olefins (MTO),different amount of FW-200 are added in the gel during the hydrothermal synthesis process.The effects of different addition amounts of FW-200 on SAPO-34 catalyst's pore diameter,morphology,acidity and catalytic performance in MTO are studied.The synthesized samples are characterized by XRD,SEM and NH₃-TPD.The performance of mes-SAPO-34 molecular sieve in MTO is studied with methanol as raw material.The result indicates that when the adding amount of carbon template reaches 8%,the crystal structure and crystallinity of SAPO-34 molecular sieve is not affected significantly while the molecular sieve have the most mesoporous and the largest mesoporous volume.Meanwhile,its acid distribution reaches the best and its performance exhibits better in MTO.Moreover,the catalyst has the longest service life and the total yield of ethylene and propylene can reach 86.77%.

吴晓娜(1993-),女,硕士研究生,研究方向为清洁能源生产工艺,812384572@qq.com