氮改性介孔碳的制备、表征及其对乙炔氢氯化反应的催化活性

Preparation and Characterization of Nitrogen Modified Mesoporous Carbons and Its Catalytic Activity for Acetylene Hydrochlorination Reaction

采用三元共组装法制备了一系列不同氮改性的介孔碳及其Au/MOMC催化剂,探索了介孔碳制备的最佳条件,利用BET、元素分析仪(EA)对样品进行了表征,考察了介孔碳作为载体及其Au/MOMC催化剂,在固定床反应装置上进行乙炔氢氯化反应的催化性能。实验结果表明,在180℃、C2H2(GHSV)=180h-1、VHCl/VC2H2=1.15、Au的负载量为1%的反应条件下,Au/MOMC催化剂的乙炔转化率可达到89%(比Au/OMC提高34%),选择性接近99.99%。

A series of nitrogen modified mesoporous carbons and Au/MOMC catalysts were prepared by triconstituent co-assembly and characterized by BET and EA methods. The catalytic performance of mesoporous carbons and Au/MOMC catalysts for acetylene hydrochlorination to vinyl chloride in a packed bed reactor and the optimal preparation conditions was studied. Under the reaction conditions of temperature 180 ℃, Cz Hz hourly space velocity （GHSV） 180 h-1, feed volume ratio V （HCI）/V （C2H2） = 1.15 and Au loading of 1 （wt）%, the acetylene conversion of Au/MOMC were 89 % （higher than Au/MOMC by 34 %）,and vinyl chloride monomer selectivity was approximately 99.99%.