| SAPO—11分子筛的酸性及催化性能 |
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| 引用本文： | 严爱珍,刘扬.SAPO—11分子筛的酸性及催化性能[J].高等学校化学学报,1990,11(12):1391-1395. |
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| 作者姓名： | 严爱珍 刘扬 |
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| 作者单位： | 南京大学化学系 210008
(严爱珍，刘杨，于振臣)，南京大学化学系 210008(须沁华) |
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| 摘 要： | 用IR及TPD法研究了SAPO-11分子筛的表面酸性质,并以正庚烷裂解和乙醇脱水为探针研究其催化性能。结果表明,SAPO-11分子筛上既有L酸中心,又有B酸中心,表面上存在4个羟基峰。NH_3-TPD测定了SAPO-11的酸强度和酸中心数,并用矩形法求得脱附活化能,SAPO-11系属中等酸强度的分子筛。
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| 关 键 词： | SAPO－11 分子筛 酸性 催化性能 |
Acidic and Catalytic Properties of SAPO-11 Molecular Sieve |
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| Yan Ai-zhen,Liu Yang,Yu Zhen-chen,Xu Qin-hua.Acidic and Catalytic Properties of SAPO-11 Molecular Sieve[J].Chemical Research In Chinese Universities,1990,11(12):1391-1395. |
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| Authors: | Yan Ai-zhen Liu Yang Yu Zhen-chen Xu Qin-hua |
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| Abstract: | The acidic properties of SAPO-11 molecular sieve were studied by IR and TPD methods. The catalytic properties of n-heptane cracking and ethanol dehydration on SAPO-11, HZSM-5 and SAPO-5 were performed. The results indicated that both Bronsted and Lewis acid sites are present in the sample of SAPO-11. From the spectra of NH3-TPD on SAPO-11 the amount and strength of acid sites were measured and NH3 desorption activation energy was calculated, showing that it has medium acidic strength. |
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| Keywords: | Molecular sieve SAPO-11 Acidic properties Catalysis of heptane cracking and ethanol dehydration |
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