燃料化学学报2018，Vol.46Issue(6)：717-724,8.
水热合成Co3O4的制备参数调变及其催化分解N2O性能
Effect of preparation parameters on the catalytic performance of hydrothermally synthesized Co3O4 in the decomposition of N2O
摘要
Abstract
With hexadecyl trimethyl ammonium bromide (CTAB) as the template, cobaltosic oxide precursors were hydrothermally synthesized.Co3O4catalysts were then prepared by calcining the cobaltosic oxide precursors, which was further modified by impregnation with K2CO3solution and used in the decomposition of N2O.The catalysts were characterized by means of X-ray diffraction ( XRD), nitrogen physisorption, scanning electron microscopy ( SEM), X-ray photoelectron spectroscopy ( XPS), hydrogen temperature-programmed reduction (H2-TPR), and oxygen temperature-programmed desorption (O2-TPD); the effect of CTAB concentration, CTAB/cobalt molar ratio and urea/cobalt molar ratio on the catalytic activity of Co3O4was investigated.The results indicated that the Co3O4catalyst prepared by using 0.05 mol/L CTAB solution, with a CTAB to cobalt molar ratio of 1 and a urea to cobalt molar ratio of 4, exhibits high activity in N2O decomposition.The catalytic performance of Co3O4can be further enhanced by modifying with K.Over the 0.02 K/Co3O4catalyst, the N2O conversion remains over 91% at 400℃ after conducting the N2O decomposition reaction for 50 h in the presence of oxygen and steam.关键词
Co3O4/水热合成/制备参数/催化分解/N2OKey words
Co3O4/hydrothermal synthesis/preparation parameters/catalytic decomposition/N2O分类
化学化工引用本文复制引用
李和健,郑丽,赵天琪,徐秀峰..水热合成Co3O4的制备参数调变及其催化分解N2O性能[J].燃料化学学报,2018,46(6):717-724,8.基金项目
The project was supported by the Shandong Provincial Natural Science Foundation (ZR2017MB020) and Graduate Innovation Foundation of Yantai University (YDZD1816). （ZR2017MB020）
