利用正己烷制备负载型碳化钼催化剂及其加氢脱硫活性

Preparation of Supported Molybdenum Carbide Catalyst Using n-Hexane and Its Hydrodesulfurization Activity

利用具有较长碳链的正己烷作为原料对氧化钼进行程序升温碳化制备碳化钼.X射线衍射、X射线光电子能谱表征和BET比表面积测定以及噻吩的加氢脱硫活性评价结果表明,正己烷作为碳化原料在600℃左右可对担载的氧化钼进行碳化,正己烷的使用不仅可以降低碳化所需的温度,还能在碳化过程中起到一定的改善碳化钼分散度的作用.

The supported molybdenum carbide catalyst hydrodesulfurization （HDS） activity was investigated. was prepared by using n-hexane as carbon source, and its The catalyst characterization results and thiophene HDS activity indicate that the temperature-programmed carburization of supported molybdenum trioxide can be fulfilled, at least to a great extent, at about 600 ℃ by using n-hexane and hydrogen as carburizing agents. The n-hexane/hydrogen molar ratio of 0.006 is optimum for the carburization at 600 ℃ . The use of n-hexane can lower the temperature required for carburization and improve the dispersion of molybdenum carbide produced.