MoAPO-5分子筛的合成及性能研究

SYNTHESIS AND PROPERTIES OF MoAPO-5 MOLECULAR SIEVE

用水热法合成了MoAPO-5分子筛,并测定了其晶体形貌、吸附量、分子筛骨架的稳定性以及催化活性和表面酸性.实验结果表明,MoAPO-5分子筛是一种新的金属磷酸铝分子筛.对异丙苯裂化反应有良好的催化活性,且反应活性随Mo含量的增大而增大.与已有文献结果比较表明,MoAPO-5分子筛具有较强的L酸中心.

MoAPO-5 molecular sieve was synthesized by hydrothermal method. It was characterized by high resolution scanning electron microscope, X-ray powder diffraction and infrared spectra. Some of the properties of MoAPO-5,such as adsorption isotherms,thermal stability ,acidity and catalysis,have been investigated. The results show the presence of Lewis acid sites on the surface of MoAPO-5 and its activity for cumene increases with Mo increasing.