Title of article :
Effect of surface composition on the catalytic performance of molybdenum phosphide catalysts in the hydrogenation of acetonitrile
Author/Authors :
Pengfei Yang، نويسنده , , Zongxuan Jiang، نويسنده , , Pinliang Ying، نويسنده , , Can Li، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
A series of molybdenum phosphide catalysts with initial Mo/P ratios varying in a narrow range of 0.90–1.10 was prepared by temperature-programmed reaction; characterized by X-ray diffraction, BET, elemental analysis, X-ray photoelectron spectroscopy, and CO chemisorption measurements; and tested for the hydrogenation of acetonitrile at different pressures (0.1–1.0 MPa) and temperatures (473–513 K). The catalysts exhibited attractive catalytic activity, especially at a H2 pressure above 0.2 MPa. The surface composition of the MoP catalysts could be fine-tuned by the initial Mo/P ratio, which consequently led to different surface properties (e.g., CO uptakes) and catalytic behaviors. Catalysts with high initial Mo amount gave high selectivity to the primary amine, ethylamine, whereas those with high initial P amount created more condensed amines, diethylamine and triethylamine.
Keywords :
ultrasonic treatment , Mixed metal oxide , Acrylic acid , Propane , hydrothermal synthesis
Journal title :
Journal of Catalysis
Journal title :
Journal of Catalysis