【摘要】 <正> 80年代以来,国内对ZSM-5沸石的研制已有了较好的结果,但具有优良强度适用于工业流化床的微球催化剂还未见报道。本文通过X 射线衍射、氨吸附的TPD 谱和甲醇制取汽油初活性评价等手段,表征粘合剂SiO₂含量不同的催化剂在不同焙烧温度下的物理化学特性变化,以期选择适宜的焙烧更多还原

【Abstract】 A HZSM-5 zeolite microspheric catalyst for fluidized bed is prepared.Silica is used as binder.HZSM-5/SiO₂ ranges from 0.25 to 4.The parti-cle size is about 20—80μm.The microspheric catalyst is studied by Xraydiffraction,NH₃ adsorption-desorption and initial activity of MTG reac-tion.The properties of the catalysts calcined within 500—900℃ are exam-ined and show that they are practically remain unchanged below 700℃.It has good mechanical strength suitable for fluidization and appropriateconversion and selectivity in MTG synthesis.The catalyst calcining at700℃ is suggested.更多还原