期刊论文

Tang, Wanjun;Xie, GY

英文

Research on Chemical Intermediates

0922-6168

2023

49

12

5361-5374

10.1007/s11164-023-05148-7

This work was supported by the National Natural Science Foundation of China (Grant No. 21172269), the Fundamental Research Funds for the Central Universities, South-Central Minzu University (Grant No. CZY22010), the Major bidding projects of provincial and ministerial scientific institutions, South-Central Minzu University (Grant No. PTZD22007), and the Opening Project of Key Laboratory of Optolectronic Chemical Materials and Devices of Minstry of Education, Jianghan Univeristy (Grant No. JDGD-202220).

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Formulation and shaping of heterogeneous catalysts are vital in the successful industrial application. Here micro-sized vanadium chromium composite oxides catalysts with the spherical shape were prepared via spray drying with colloidal silica as a binder material. The physicochemical properties of catalysts with different Cr/V molar ratios were characterized by XRD, XPS, FT-IR, TPR, and particle size distribution analysis. It was revealed that the addition of Cr inhibited the formation of the crystalline phase V2O5 and decreased the reduction temperature of pentavalent vanadium species, and al...