Improved H2 Production by Ethanol Steam Reforming over Sc2O3-Doped Co-ZnO Catalysts

摘要: H2 production by catalytically ethanol steam reforming (ESR) is an effective and prospective method for the application of fuel cells. However, catalysts’ desirable activity stability remains unprecedented challenge. Herein, a type Sc2O3-doped Co-ZnO catalyst was developed co-precipitation method. The so-constructed Co2Zn1Sc0.3 exhibited superb catalytic performance compared with Co-ZnO, giving STY(H2) as high 1.099 mol·h−1·g-cat−1 (data taken 100 h after reaction started). In comparison, pristine only afforded 0.684 under identical conditions. Characterization results revealed that Sc2O3 dopant strengthened electronic interaction between Co species ZnO, which in favour elevating reduction temperature oxides boosting dispersion Con+ (n = 1 or 2). introduction induced formation O2− OH−. All these effects effectively inhibited sintering active markedly improved operating catalyst.