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本文在高温水蒸汽条件下对ＺＳＭ－５类型的高硅沸石进行渗铝研究。通过氨吸附的酸性测定、２７Ａｌ和２９ＳｉＮＭＲＭＡＳ谱、ＸＲＤ、ＸＰＳ和ＩＲ等多种分析测试手段对高硅沸石ＨＺＳＭ－５、ＡｌＺＳＭ－５、ＫＺＳＭ－５和ＡｌＫＺＳＭ－５进行了表征，并对ＨＺＳＭ－５和ＫＺＳＭ－５渗铝前后的酸性中心变化规律进行研究。结果表明，渗铝改性后的ＡｌＺＳＭ－５总酸量的增加可达２００％，强酸部分的增加可高达８００％以上，明显地改善了ＨＺＳＭ－５的酸性性质和酸中心的高温水热稳定性。Ｃ１４裂解活性表明，渗铝后的ＡｌＺＳＭ－５裂解活性增加了７５ｗｔ％，渗铝后ＡｌＫＺＳＭ－５较渗铝前ＫＺＳＭ－５仍然保留较多的弱酸，强酸也有所增加，出现了羰基离子反应中心，与标样ＨＺＳＭ－５相比，催化裂化活性提高２０ｗｔ％左右。
In this paper, ZSM-5 type high-silica zeolite was aluminized at high temperature. The high-silica zeolites HZSM-5, AlZSM-5, KZSM-5 and AlKZSM-5 were characterized by acid analysis of ammonia adsorption, 27Al and 29Si NMR spectroscopy, XRD, XPS and IR. 5 and KZSM-5 before and after aluminizing the change of acid centers were studied. The results show that the total amount of AlZSM-5 modified by aluminizing can increase by 200% and the increase of strong acid can be as high as 800%, which can obviously improve the acid property of HZSM-5 and the high temperature hydrothermal stability of HZSM-5 Sex. C14 cleavage activity showed that the AlZSM-5 cracking activity increased by 75wt% after aluminizing. AlKZSM-5 still retained more weak acid than aluminized KZSM-5 after aluminizing, and the strong acid also increased. The carbonyl ion reaction center , Compared with the standard sample HZSM-5, catalytic cracking activity increased by about 20wt%.