Synthesis of Cu-BTC by Room Temperature hydrothermal and Its Low Temperature SCR Denitration

Abstract In this paper, the room temperature hydrothermal synthesis method was used instead of the traditional solvothermal synthesis method to successfully prepare Cu-BTC, the growth of Cu-BTC was studied, and it was successfully applied to SCR flue gas denitration. The physic-chemical properties of catalyst samples were characterized by multiple techniques, such as SEM, XRD, FTIR, XPS and BET. The results showed that: (1) Cu-BTC prepared at different reaction times maintained its unique hexagonal prism crystal structure. As the reaction time increased, the purity and specific surface area of Cu-BTC gradually increased, up to 1521.320 m2/g. (2) Cu-BTC-30 h catalyst had a high Oα/(Oα+Os) ratio and could act as an electron acceptor to react with NO. The surface of the catalyst contained two valence state (Cu2+ and Cu+), and Cu2+ was dominant. (3) As the preparation time of the catalyst increased, the denitration also increased. When the preparation time was 30 h, the denitration rate reached the highest at 270 °C, which was as high as 90.36%.