| Y型分子筛酸性质对四氢萘加氢裂化多产B TX反应的影响 |
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| 引用本文： | 羡策,毛以朝,龙湘云,杨平,韩伟.Y型分子筛酸性质对四氢萘加氢裂化多产B TX反应的影响[J].石油学报(石油加工),2021,37(2):252-261. |
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| 作者姓名： | 羡策 毛以朝 龙湘云 杨平 韩伟 |
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| 作者单位： | 中国石化 石油化工科学研究院, 北京 100083 |
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| 基金项目： | 中国石油化工股份有限公司合同项目（S115049）资助 |
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| 摘 要： | 以孔性质相近、酸性质存在差异的Y型分子筛为酸性组分制备加氢裂化催化剂,采用N2吸附-脱附、NH3-TPD、Py-IR、HRTEM等手段表征分子筛和催化剂的物化性质,以四氢萘为模型化合物在高压加氢微反装置上评价催化剂的加氢裂化反应性能.结果表明:提高Y型分子筛上强酸中心比例能促进四氢萘的转化;增加Y型分子筛上中强酸的占比...
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| 关 键 词： | Y型分子筛 酸性中心 四氢萘 加氢裂化 苯、甲苯、二甲苯混合物(BTX) |
| 收稿时间： | 2020-04-13 |
Effects of Y Zeolite Acid Properties on the Hydrocracking Performance of Tetralin for BTX Production |
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| XIAN Ce,MAO Yichao,LONG Xiangyun,YANG Ping,HAN Wei.Effects of Y Zeolite Acid Properties on the Hydrocracking Performance of Tetralin for BTX Production[J].Acta Petrolei Sinica (Petroleum Processing Section),2021,37(2):252-261. |
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| Authors: | XIAN Ce MAO Yichao LONG Xiangyun YANG Ping HAN Wei |
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| Affiliation: | Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China |
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| Abstract: | A series of hydrocracking catalysts were prepared
using Y zeolites with similar pore properties but of different acid properties
as the acid component. By virtue of N2 adsorption-desorption, NH3-TPD,
Py-IR and HRTEM, the zeolites and catalysts were characterized. Then the
hydrocracking performance of catalysts was investigated in a high-pressure
fixed-bed microreactor. Results show that： (i) increasing the ratio
of the strong acid sites of Y zeolites promotes the conversion of tetralin;
(ii) increasing the ratio of medium strength acid sites and the strong B/strong
L acid amount ratio of Y zeolites is beneficial to the ring-opening reaction of
tetralin together with the following side-chain breaking reaction，promoting the formation of
benzene,toluene and xylene (BTX); (iii) adjusting the acidity of Y zeolites
also changes the active phase and the hydrogenation performance of catalyst,
and thus affecting the selectivity of BTX. Hence, the acid properties of
zeolites are the key factor for tetralin hydrocracking to produce BTX. |
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| Keywords: | zeolite Y acid sites tetralin hydrocracking BTX(benzene toluene xylene) |
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