Phosphorus promoted HZSM-5 zeolites for the coupling transformation of methanol with 1-butene to propylene

被引:1
作者
Tang, Xiao-hua [1 ]
Liu, Rui-qiang [1 ]
Tian, Hai-feng [1 ]
Li, Hui [1 ]
Zha, Fei [1 ]
Chang, Yue [1 ]
机构
[1] Northwest Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China
基金
中国国家自然科学基金;
关键词
phosphorus promoted HZSM-5; coupling transformation; propylene; 1-butene; methanol; CATALYTIC PERFORMANCE; HIGH SELECTIVITY; PORE STRUCTURE; ACID SITES; ZSM-5; CRACKING; CONVERSION; STABILITY; FRAMEWORK; PROPENE;
D O I
10.1139/cjc-2020-0316
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Phosphorus promoted HZSM-5 zeolites (P-HZSM-5) were prepared by synthetic methods of incipient wetness impregnation and in situ synthesis, respectively. This was characterized by the means of powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller method ( BET), thermogravimetry (TG), and NH3-TPD. The P-HZSM-5 zeolite prepared by incipient wetness impregnation has a large specific surface area and pore size, and the weak acidity is remarkably increased. The catalytic activity of P-HZSM-5 for the coupling transformation of methanol with 1-butene to propylene was investigated. Under the reaction conditions of temperature at 550 degrees C, pressure at 0.4 MPa, space velocity at 1800 mL/(g(cat) h), and mole ratio of CH3OH/C4H8 at 1:1, the conversion of C4H8 can reach to 75.8%, and the selectivity and yield of propylene are 42.2% and 31.9%, respectively.
引用
收藏
页码:474 / 481
页数:8
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