1.中国科学院广州能源研究所,广东 广州 510640
2.东华工程科技股份有限公司,安徽 合肥 230088
3.广东工业大学轻工化工学院,广东 广州 510006
梁正(1989年生),男;研究方向:生物质能及仪器分析技术;E-mail:liangzheng@ms.giec.ac.cn
仇松柏(1981年生),男;研究方向:生物质催化转化;E-mail:qiusb@gdut.edu.cn
收稿:2025-09-05,
修回:2025-10-30,
录用:2025-11-09,
网络出版:2025-11,
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梁正, 罗雷, 王小曼, 等. 临氢热解制备高分散Ni/SiO2及萘加氢性能[J/OL]. 中山大学学报(自然科学版)(中英文), 2025,1-12.
LIANG Zheng, LUO Lei, WANG Xiaoman, et al. Preparation of highly dispersed Ni/SiO2
梁正, 罗雷, 王小曼, 等. 临氢热解制备高分散Ni/SiO2及萘加氢性能[J/OL]. 中山大学学报(自然科学版)(中英文), 2025,1-12. DOI: 10.11714/acta.snus.ZR20250189.
LIANG Zheng, LUO Lei, WANG Xiaoman, et al. Preparation of highly dispersed Ni/SiO2
萘作为煤焦油中含量最为丰富的多环芳烃,不仅是一种环境污染物,也是一种高附加值的化工原料。通过催化加氢,萘可转化为具有更高价值的四氢萘和十氢萘。在各类加氢催化剂中,负载型镍基材料因其成本优势,被视为潜在的非贵金属替代方案。本研究采用柠檬酸(CA)辅助的溶胶凝胶法,结合临氢热解策略,成功制备了高分散Ni/SiO
2
催化剂。通过系统表征与催化性能测试,重点探究了柠檬酸用量、热解气氛及临氢热解温度对催化
剂物化性质与萘加氢性能的调控规律。结果表明,在优化的柠檬酸配比与H₂气氛下热解所得的
w
=20% Ni/SiO₂-CA(H₂)催化剂,表现出优于无CA对照组及其他热解工艺催化剂的加氢活性。在相同低温反应条件下,其活性显著高于商业Ru/C催化剂。本研究为开发高效非贵金属加氢催化剂提供了新思路与实验依据。
Naphthalene, the most abundant polycyclic aromatic hydrocarbon in coal tar, is an environmental pollutant,but at the same time,is also a high-value chemical feedstock. Catalytic hydrogenation offers a pathway to transform naphthalene into more valuable products such as tetralin and decalin. Among various hydrogenation catalysts, the supported transition metal nickel (Ni) materials are considered promising non-noble metal alternatives due to their cost-effectiveness. In this work, highly dispersed Ni/SiO₂ catalysts were successfully prepared
via
a citric acid (CA)-assisted sol-gel method combined with a H
2
atmosphere pyrolysis strategy. Through systematic characterization and catalytic performance tests, we comprehensively investigated the effects of CA content, pyrolysis atmosphere, and hydro-pyrolysis temperature on the physicochemical properties of the catalysts and their naphthalene hydrogenation performance. The results demonstrated that the 20% Ni/SiO₂-CA(H₂) catalyst, obtained with an optimized CA ratio and pyrolyzed under a H₂ atmosphere, exhibited superior hydrogenation activity compared to the CA-free control group and the catalysts prepared under other pyrolysis conditions. Notably, under identical low-temperature reaction conditions, its activity significantly surpassed that of a commercial Ru/C catalyst. This work provides a novel research avenue and experimental foundation for the development of high-performance supported metal catalysts.
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