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脱铝超稳Y沸石的SiO2/Al2O3比与催化性能的研究

Studies on SiO2/Al2O3 and catalytic performance of dealuminated usy catalyst

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【作者】 郭建平; 张尚; 尹笃林;

【Author】 GUO Jian ping 1,ZHANG Shang 2,YIN Du lin 2 (1.Department of Chemistry,Loudi Teacher’s College,Loudi 417000,China; 2.Institute of Fine Catalysis and Synthesis,Hunan Normal University,Changsha 410081,China)

【机构】 娄底师范专科学校化学系; 湖南师范大学精细催化合成研究所; 湖南师范大学精细催化合成研究所 湖南娄底417000; 湖南长沙410081; 湖南长沙410081;

【Abstract】 The effective B acid amount of dealuminated USY(DUSY) zeolites with different silica/alumina ratios were measured by UV spectrometry with 2,6 dimethyl pyridine as adsorbentes in the presence of cyclohexane or anhydrous ethanol or tetrahydrofuran.The isomerization of α pinene was used to check the acidic catalytic properties of these zeolites.The results indicate that effective B acid amount of DUSY measured in polar anhydrous ethanol or tetrahydrofuran is lower than that of non polar cyclohexane.The effect of solution concentration of effective B acid amount of DUSY zeolites is small.As the silica/alumina ratio of catalyst increases,effective B acid amount and conversion of isomerization of α pinene all raise.

【基金】 国家自然科学基金资助项目 ( 2 95 72 0 42 )
  • 【文献出处】 化学研究与应用 ,Chemical Research and Application , 编辑部邮箱 ,2002年01期
  • 【分类号】O643.3
  • 【下载频次】129
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