| 缓和加氢裂化催化剂表面酸性对催化剂活性的影响 |
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| 引用本文： | 张田英,李奉孝,王进善.缓和加氢裂化催化剂表面酸性对催化剂活性的影响[J].中国石油大学学报(自然科学版),1990(4). |
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| 作者姓名： | 张田英 李奉孝 王进善 |
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| 作者单位： | 石油大学炼制系
(张田英，李奉孝)，齐鲁石化公司研究院(王进善) |
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| 摘 要： | 用浸渍法制备了两个系列的含分子筛催化剂,用溶剂法和吡啶吸附红外光谱法研究了催化剂表面酸性,并在连续微反装置上以正辛烷为原料,评价了催化剂活性。在此实验基础上,探讨了催化剂表面酸性和催化剂活性之间的关系。实验结果表明,催化剂中分子筛类型和含量影响催化剂表面总酸量、强酸量、L酸量以及B酸量。催化剂表面B酸中心是催化剂加氢裂化活性中心,催化剂表面L酸中心能提高催化剂的抗氮性能,因而可提高催化剂对含氮化合物原料的加氢裂化性能。
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| 关 键 词： | 缓和加氢裂化 催化剂 表面酸性 活性 分子筛 |
EFFECT OF SURFACE ACIDITY ON ACTIVITY OF MILD HYDROCRACKING CATALYST |
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| Zhang Tiany ing Li Fengxiao Wang Jinshan.EFFECT OF SURFACE ACIDITY ON ACTIVITY OF MILD HYDROCRACKING CATALYST[J].Journal of China University of Petroleum,1990(4). |
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| Authors: | Zhang Tiany ing Li Fengxiao Wang Jinshan |
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| Institution: | Dept. of Chemical Engineering |
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| Abstract: | Two series of zeolite-containing hydrocracking Ni-Mo cat. were prepared by impregnation method for evaluating the effect of surface acidity on its hydrocracking activity. The IR-spectroscopy of pyridine adsorption and solvent method were used to characterise surface acidity. The data obtained from n-octane hydrocracking experiments on these catalysts in micro reactor G-C apparatus show that the zeolite type and content exert different effect on total acidity,L acid and B acid sites therefore on their hydrocracking activity is directly related to the number of B acid sites while L-acid sites can enhance nitrogen tolerance of these catalysts and so is beneficial in hydrocracking of high-nitrogen feedstocks. |
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| Keywords: | Mild hydrocracking Catalyst Surface acidity Activity Zeolite |
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