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- W2377339989 abstract "Cu/ZrO 2 is well known as a good catalyst for methanol synthesis from CO/CO 2 hydrogenation. In order to improve its catalytic performance, the effects of the addition of Mn and La promoters to Cu/ZrO 2 catalyst were investigated. The structure and adsorptive properties of the catalysts were characterized by BET, XRD, TPR, H 2 TPD and CO TPD techniques. Both the promoters possessed separately the capacity of improving the catalyst activity with the La component being better dopant. The catalyst activity was remarkably improved by the addition of Mn and La together, and the space time yield of methanol reached 1 128 g/(ml·h) under the mild reaction conditions (GHSV= 3?000 h -1 , p =6 0 MPa, θ =250 ℃). Combined with the characterization results, a synergistic effect in La and Mn co modified Cu/ZrO 2 catalyst was suggested. On the one hand, the interaction of Cu and Mn enhanced the dispersion of the active component owing to the formation of CuMnO x composite, which prevented active phase Cu from crystallizing and sintering. On the other hand, the presence of La effectively increased the strength of the interaction between Cu and ZrO 2, and therefore stabilized the active center of the catalyst, and facilitated the spillover between Cu and ZrO 2." @default.
- W2377339989 created "2016-06-24" @default.
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- W2377339989 date "2004-01-01" @default.
- W2377339989 modified "2023-09-25" @default.
- W2377339989 title "Structure and Catalytic Performance of Mn-and La-Modified Cu/ZrO_2 Catalysts for Methanol Synthesis" @default.
- W2377339989 hasPublicationYear "2004" @default.
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