US EPA

1124304 

Journal Article 

Influence of the calcination on the activity and stability of the Cu/ZnO/Al2O3 catalyst in liquid phase methanol synthesis 

Zhang, XB; Zhong, L; Guo, QH; Fan, H; Zheng, HY; Xie, KC 

2010 

1 

Fuel
ISSN: 0016-2361
EISSN: 1873-7153 

Elsevier BV 

89 

7 

1348-1352 

Catalyst Cu/ZnO/Al sub(2)O sub(3) was prepared through co-precipitation method and investigated in a stirred slurry autoclave reactor system for methanol synthesis. The structure of the catalysts was studied by derivative thermogravimetry (DTG), X-ray diffraction (XRD) and H sub(2) temperature programmed reduction (H sub(2)-TPR). The results show that the average size of CuO crystallite of the catalyst was 3.23 nm when the catalyst was calcined at 623 K for 2.0 h, and the catalyst with this size of CuO crystallite is highly active and stable. Its space time yield and deactivation rate reached 172.2 g/kg sub(cat) super(.h and 0.43%/d, respectively under the reaction conditions of 513 K, 4.0 MPa, H) sub(2)CO/CO sub(2) = 68/24/5 and space velocity = 810 ml/g sub(cat) super(.h.) 

Liquid phase synthesis; Methanol; Catalyst stability; Cu/ZnO/Al2O3