Structure and denitration performance of carbon-based catalysts prepared from Cu-BTC precursor

Cu-BTC前驱体制备碳基催化剂的结构和脱硝性能（英文）

Using Cu-BTC prepared by hydrothermal method as precursor, carbon-based catalysts were obtained as model materials for low-temperature DeNO_x. These catalysts were characterized by X-ray diffractometry（XRD）, Raman spectroscopy, scanning electron microscopy（SEM） and energy dispersive X-ray spectrometry（EDS）. The results showed that all carbon-based catalysts held the octahedron shape of Cu-BTC in most parts, and they mainly consisted of face-centered cubic copper. CuO_x/C exhibited excellent catalytic activity, and such catalytic activity was further improved with the introduction of Ag. The catalyst with a Cu to Ag mole ratio of 6：1 and an activated temperature of 600 °C showed the best catalytic performance, and its catalytic denitration rate reached 100% at a temperature as low as 235 °C. During the catalytic reaction process, Cu~＋ mainly played a catalytic role.

以Cu-BTC为前驱体,采用水热法制备碳基催化剂,并进行低温脱硝性能研究。通过X射线衍射(XRD)、拉曼光谱(Raman)、扫描电镜(SEM)和能量弥散X射线谱(EDS)等技术对碳基催化剂的结构进行表征。结果表明:碳基催化剂基本保持着Cu-BTC前驱体的八面体形貌,并主要呈现面心立方铜结构。通过碳基催化剂的脱硝性能研究发现:CuO_x/C表现出最佳的催化活性,且其活性随着Ag的掺入得到进一步的提高。当Cu/Ag摩尔比为6:1,活化温度为600°C时,碳基催化剂具有最优的催化活性,其脱硝效率达到100%时温度可降低至235°C。该催化反应过程中,主要是Cu^+起催化作用。