Co-nanocasting synthesis of Cu based composite oxide and its promoted catalytic activity for methanol steam reforming. (1st November 2016)

• Record Type: Journal Article
• Authors: Xu, Tongkuan; Zou, Jie; Tao, Weitong; Zhang, Shaoyin; Cui, Li; Zeng, Fanli; Wang, Dazhi; Cai, Weijie
• Is Part Of: Fuel. Volume 183(2016)
• Page Start: 238
• Page End: 244
• Publication Date: 2016-11-01
• Subjects: Composite oxide -- Methanol -- Co-nanocasting -- Hydrogen; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2016.06.081
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Highlights: Steam reforming of methanol over CuZnAlZrGa catalyst. CuZnAlZrGa-A catalyst exhibited higher activity and stability. Co-nanocasting method guaranteed higher Cu dispersion and Cu-support interaction. Abstract: The effect of preparation method on the catalytic behavior of Cu based composite oxide catalysts for steam reforming of methanol (SRM) has been deeply investigated in this work. The catalyst synthesized by active carbon co-nanocasting technique (CuZnAlZrGa-A) exhibited a satisfactory activity which showed ∼ 86.1% methanol conversion, 74.6 mol% H2 concentration while no detectable CO was formed at 275 °C. However, methanol conversion decreased to ca. 73.3% together with 69.4 mol% H2 for another investigated catalyst produced by a conventional co-precipitation method (CuZnAlZrGa-C). The CuZnAlZrGa-A catalyst also presented strong resistance to deactivation and maintained consistent behavior during a 70 h stability test. The as-prepared samples were further examined by a variety of characterization techniques including BET, XRD, TPR, TPO, Raman to elucidate the textural and structural properties so as to establish the catalytic performance-structure relationship. The results revealed that the observed excellent catalytic performance for CuZnAlZrGa-A catalyst might be due to its high Cu dispersion and the strong metal-support interaction.