Zr掺杂氧化铝的制备及其催化重整性能

石油炼制与化工 ›› 2024, Vol. 55 ›› Issue (8): 65-73.

Zr掺杂氧化铝的制备及其催化重整性能

鲍梦宁,杨彦鹏,苗成林,王涛,周昕瞳,臧高山,王嘉欣

中石化石油化工科学研究院有限公司

收稿日期:2023-11-24 修回日期:2024-04-30 出版日期:2024-08-12 发布日期:2024-07-29
通讯作者: 杨彦鹏 E-mail:yangyp.ripp@sinopec.com
基金资助:
中国石油化工股份有限公司合同项目;“十四五”国家重点研发计划

PREPARATION OF ZIRCONIUM-DOPED ALUMINA AND ITS CATALYTIC REFORMING PERFORMANCE

Received:2023-11-24 Revised:2024-04-30 Online:2024-08-12 Published:2024-07-29

摘要/Abstract

摘要： 采用烷氧基铝水解法，制备Zr掺杂的高纯氢氧化铝，考察Zr掺杂量对其比表面积、孔结构的影响。以该Zr掺杂氢氧化铝为原料，通过挤条法制备含Zr氧化铝载体，进一步负载Pt制备重整催化剂，以石脑油为原料，考察了Zr含量对催化剂性能的影响，并对其影响机理进行探讨。结果表明：Zr的引入会改变γ-Al₂O₃载体的L酸强度，从而改变催化剂上金属中心和酸性中心的比例，当Zr的质量分数为0.20%~0.33%时，催化剂的酸性中心和金属中心具有较好的协同性，在石脑油重整反应中表现出较高的活性和芳烃选择性。

关键词: Zr掺杂, 氧化铝, 石脑油, 催化重整

Abstract: High-purity alumina doped with zirconium was prepared by the hydrolysis method of aluminum alkoxide, and the effects of zirconium doping amount on its physical and chemical properties, such as specific surface area and pore structure, were investigated. Using the zirconium-doped alumina as raw material, a zirconium-doped alumina carrier was prepared by extrusion, further loaded with Pt to prepare reforming catalyst. Naphtha was used as raw material, the effects of zirconium content variation on the catalyst’s reactivity were investigated, and the influencing mechanism was also discussed. The results showed that the introduction of Zr could change the L acid strength of the γ-Al₂O₃ carrier, thus changing the ratio of the metal center to acid center on the catalyst. When the mass fraction of Zr was 0.20%-0.33%, the acid center and metal center of the catalyst exhibited good synergy, displaying higher catalytic activity and aromatic selectivity for naphtha reforming.

Key words: zirconium-doped, alumina, naphtha, catalytic reforming

鲍梦宁杨彦鹏苗成林王涛周昕瞳臧高山王嘉欣. Zr掺杂氧化铝的制备及其催化重整性能[J]. 石油炼制与化工, 2024, 55(8): 65-73.

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