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现代化工  2020, Vol. 40 Issue (10): 86-90    DOI: 10.16606/j.cnki.issn0253-4320.2020.10.018
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
SAPO-34和HZSM-5机械混合分子筛在甲醇制丙烯反应中的应用
徐文鹏, 苏蛟蛟, 韩丽, 徐军
郑州大学化工学院, 河南 郑州 450001
Application of mechanically-mixed SAPO-34/HZSM-5 molecular sieves in methanol to propylene
XU Wen-peng, SU Jiao-jiao, HAN Li, XU Jun
School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
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摘要 采用机械复合的方法制备不同比例SAPO-34和HZSM-5的混合分子筛。利用XRD、SEM、FT-IR、BET和NH3-TPD等手段对样品进行物性和酸性表征,并考察各分子筛催化剂在甲醇制烯烃(MTO)反应中的催化性能。结果表明,部分小颗粒的HZSM-5粘连附着于大颗粒的SAPO-34表面上;SAPO-34和HZSM-5机械混合可以调节催化剂的酸性和微介孔结构;机械混合分子筛在MTO反应中有较高的催化剂寿命和丙烯选择性;在MSZ-90%混合分子筛上,当反应20 h时,丙烯的选择性高达48.9%,丙烯/乙烯比为4.0。
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徐文鹏
苏蛟蛟
韩丽
徐军
关键词:  混合分子筛  机械复合  甲醇制丙烯  催化寿命    
Abstract: Mixed molecular sieves composing of SAPO-34 and HZSM-5 under different ratios are prepared by mechanically mixing method,and their catalytic performance in methanol to olefins (MTO) reaction are investigated.These samples are characterized by various techniques such as XRD,SEM,FT-IR,BET and NH3-TPD.The results show that some small HZSM-5 particles adhere to the surface of SAPO-34 particles with a large size,the physical mixture of SAPO-34 and HZSM-5 can adjust the acidity and pore structure of the catalyst,which helps to improve the catalytic performance of the catalyst in the MTO process.Catalytic test results show that the mixed catalysts exhibit longer lifetime and excellent selectivity for propylene.After the reaction has carried out for 20 hours over MSZ-90% mixed molecular sieves,the selectivity of propylene reaches as high as 48.9% and the production ratio between propylene and ethylene ratio is 4.0.
Key words:  mixed molecular sieves    mechanically mixing    methanol to propylene    catalytic lifetime
收稿日期:  2019-12-15      修回日期:  2020-08-06           出版日期:  2020-10-20
ZTFLH:  TQ426.61  
基金资助: 国家自然科学基金资助项目-NSFC-河南人才联合培养基金(U1204215)
通讯作者:  徐军(1965-),男,博士,副教授,硕士生导师,研究方向为催化新材料制备,通讯联系人,jxuzzu@aliyun.com。    E-mail:  jxuzzu@aliyun.com
作者简介:  徐文鹏(1991-),男,硕士研究生,研究方向为分子筛的合成,1336309844@qq.com
引用本文:    
徐文鹏, 苏蛟蛟, 韩丽, 徐军. SAPO-34和HZSM-5机械混合分子筛在甲醇制丙烯反应中的应用[J]. 现代化工, 2020, 40(10): 86-90.
XU Wen-peng, SU Jiao-jiao, HAN Li, XU Jun. Application of mechanically-mixed SAPO-34/HZSM-5 molecular sieves in methanol to propylene. Modern Chemical Industry, 2020, 40(10): 86-90.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2020.10.018  或          https://www.xdhg.com.cn/CN/Y2020/V40/I10/86
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