【摘要】 用铝盐对H₂SiF₆液相抽Al补Si法制备的RSY骨架富硅Y沸石进行了改性。对该过程进行了中型放大试验,得到了与实验室相一致的结果。对比实验结果表明,改性产物中不含杂晶,并具有更低的Na、F 含量,更多的B 酸中心.更少量的L 酸中心。更多还原

【Abstract】 Aluminum salt was used to modify the framework silicon-enriched Y zeolite prepared by se-condary synthesis using H₂SiF₆.The experiment was further carried out in a pilot plant and the resultswere in good agreement with those of the laboratory.After modification,the framework silicon-enriched Y zeolite was superier than the original one in aspects such as more pure crystal,lower Naand F contents,more Bronsted acid sites,larger surface area,and less Lewis acid sites.An explana-tion of how aluminum salt behaviors in the modification process was also proposed.更多还原