【摘要】 应用BET、XRD和吡啶吸附红外光谱研究了高温水蒸气处理对A、C/ β-沸石催化剂性能的影响 ,并利用荧光色谱法对催化剂的催化活性进行了评价。结果表明 ,水蒸气处理 β -沸石 ,使载体中的不稳定骨架铝脱出 ,孔径由 2 .0 5× 1 0 -9/m增加到 2 .4 3× 1 0 -9/m ,酸性由 0 .4 90mmol·g-1 降低到 0 .32 9mmol·g-1 ,而 β-沸石的基本结构并未发生改变 ,催化剂的活性大大增强 ,烯烃体积分数由 4 7.39%下降到 30 .6 2 % ,符合国家新标准要求更多还原

【Abstract】 Effect of water steaming treatment on A,C/β-zeolite catalysts was investigated by using BET, XRD, IR spectrum of pyridine absorbed. The activity of catalysts was evaluated by fluorescent indicator adsorption method. The result shows that of β-zeolite treated with water steaming makes unstable framework aluminium taken out of carrier. The pore diameter is increased from 2.05×10^-9 m to 2.43×10^-9 m. Acid properties is decreased from 0.490 mmol·g^-1 to 0.329 mmol·g^-1. Structure of β-zeolite remains unchanged. It is concluded that the activity of catalysts increases greatly, the volume fraction of olefin of FCC gasoline decreases from 47.39% to 30.62%. These meet the requirement of the new standard for producing FCC gasoline.更多还原