费-托合成低黏度聚α烯烃加氢精制催化剂研究

石油炼制与化工 ›› 2026, Vol. 57 ›› Issue (4): 65-71.

费-托合成低黏度聚α烯烃加氢精制催化剂研究

姚强¹,李瑞龙¹,黄克旺^1,2,田茂银¹,李晓静¹,狄清林¹

1. 国家能源集团宁夏煤业有限责任公司院
2. 天津工业大学

收稿日期:2025-10-24 修回日期:2025-12-17 出版日期:2026-05-12 发布日期:2026-04-01
通讯作者: 姚强 E-mail:15012774@ceic.com
基金资助:
宁夏重点研发计划重点项目“费托合成α-烯烃生产 PAO 工艺技术开发”

STUDY ON HYDROFINING CATALYSTS FOR LOW-VISCOSITY POLY-α-OLEFINS DERIVED FROM FISCHER-TROPSCH SYNTHESIS

Received:2025-10-24 Revised:2025-12-17 Online:2026-05-12 Published:2026-04-01

摘要/Abstract

摘要： 为了提高聚α烯烃合成油的产品质量，降低油品的溴指数，选用大孔γ-Al₂O₃作为载体，采用等体积浸渍法制备了一系列不同Ni负载量的聚α烯烃加氢精制催化剂，利用多种表征手段分析了催化剂的孔结构、物相组成、金属-载体相互作用及活性位点分布与催化剂活性之间的内在关系。结果表明，高负载量（Ni质量分数为20%）制备的CAT-3催化剂具有优异的孔道结构、丰富的活性位点以及良好的金属-载体相互作用，在合适的反应条件下，可将原料油的溴指数从17600 mgBr/(100 g)降至11.8 mgBr/(100 g)，加氢产物的赛波特颜色号提升至＋30，产品指标满足实际应用要求。

关键词: 费-托合成, 聚α烯烃, 加氢精制, 镍基催化剂

Abstract: To enhance the product quality of polyalphaolefin synthetic oil (PAO) and reduce its bromine value, a series of PAO hydrofining catalysts with different Ni loadings were prepared using macroporous γ-Al₂O₃as the support.The intrinsic relationship between the catalyst's pore structure, phase composition, metal-support interactions, active site distributions and catalytic activity were systematically investigated.Results indicate that the CAT-3 catalyst (with mass fraction of Ni of 20%) exhibits an excellent pore structure, abundant active sites, and strong metal-support interactions.Under appropriate reaction conditions, the bromine index of the feedstock oil can be reduced from 17600 mgBr/(100 g) to 11.8 mgBr/(100 g), while the Saybolt color number of the hydrogenated product was improved to +30. The product specifications fully meet the requirements.

Key words: Fischer-Tropsch synthesis, polyalphaolefins, hydrofining, Ni-based catalyst

姚强李瑞龙黄克旺田茂银李晓静狄清林. 费-托合成低黏度聚α烯烃加氢精制催化剂研究[J]. 石油炼制与化工, 2026, 57(4): 65-71.

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