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OALib Journal期刊
ISSN: 2333-9721
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铝修饰改性对sba-15分子筛性质及催化剂性能的影响
, PP. 1502-1506
Keywords: 调变ph值合成法,al-sba-15,酸性,加氢裂化催化剂
Abstract:
？分别采用调变ph值合成法和后处理嫁接法制备了铝修饰改性的sba-15分子筛，通过xrd、al核磁、n2吸附脱附、nh3-tpd等方法对改性分子筛的理化性质进行了分析表征，考察了不同的al修饰改性方法对分子筛性质和加氢裂化催化剂性能的影响。结果表明，调变ph值合成法能够有效地对sba-15进行al改性，得到的al-sba-15分子筛具有高度有序的六方孔道结构，较好的水热稳定性。al的引入提高了sba-15的表面酸性，并使其在加氢裂化反应中表现出较好的中油选择性。
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