Mn-Promoted Ru-Based Catalysts for Enhanced Fischer-Tropsch Synthesis of Olefins from Syngas

被引：6
|
作者：
An, Yunlei [1 ]
Wang, Xinxing [1 ]
Yu, Hailing [1 ,2 ]
Qi, Xingzhen [1 ,2 ]
Lv, Dong [1 ]
Lin, Tiejun [1 ]
Zhong, Liangshu [1 ,3 ]
机构：
[1] Chinese Acad Sci, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai Adv Res Inst, Shanghai 201203, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201203, Peoples R China
来源：
ACS CATALYSIS | 2023年 / 13卷 / 20期
基金：
上海市自然科学基金; 国家重点研发计划;
关键词：
Fischer-Tropsch synthesis; long-chain olefins; manganese; Ru nanoparticles; electronic effect; SELECTIVE CONVERSION; LIGHT OLEFINS; PERFORMANCE; CO; COBALT; POTASSIUM;
D O I：
10.1021/acscatal.3c03455
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The promotion effect of manganese on the Ru-based Fischer-Tropsch to olefins (FTO) reaction was investigated. Methane formation and second hydrogenation of olefins were effectively suppressed, while catalytic activity and olefin formation, especially for long-chain olefins, were greatly promoted with the addition of Mn. Structure characterization suggested that the addition of Mn could promote the dispersion of Ru nanoparticles (NPs) and enhance the electron density of metallic Ru sites, thus boosting the level of CO adsorption and dissociation. The electronic effect of Mn also creates a C*-rich local chemical environment that could weaken the hydrogenation of olefins. This work provides a simple and feasible way to improve Ru atom utilization for the rational design of Ru-based FTO catalysts.
引用
收藏
页码：13245 / 13256
页数：12
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