关键词: 溶胶凝胶, 纳米介孔分子筛, 表征, 加氢脱硫, 稳定性

Abstract: Two kinds of nano-mesoporous molecular sieve were synthesized by one-step sol-gel method at low temperature and characterized, then the synthesized samples were loaded with 30% Ni2P and Co2P, and applied in the hydrodesulfurization experiments of thiophene. The experimental results indicate that the samples have mesoporous characteristic, crystal grain size about 30 nm, pore diameter around 20 nm, and specific surface area about 400 m2/g. They also have certain weak acidity and good thermal stability. The first hydrodesulfurization rate (h) of the catalysts with CTAC as template solvent is higher than that with CTAB, h of those with Co2P as active component is higher than that with Ni2P, h at the low temperature is higher than that at high temperature. Four catalysts reduce HDS capability greatly, the catalysts with Ni2P as active component reduce more than that with Co2P as active component, h reduces more at 360℃ than that at 300℃, the catalysts with CTAB as template solvent reduce more than that CTAC as template solvent.

Key words: sol-gel, nano-mesoporous molecular sieve, characterization, hydrodesulfurization, stability