Carburized cobalt catalyst for the Fischer–Tropsch synthesis. Issue 19 (9th September 2021)

• Record Type: Journal Article
• Authors: Shen, Xianfeng; Luo, Dan; Ma, Chenwei; Suo, HaiYun; Yan, Lai; Zhang, Tianfu; Liu, Xi; Wen, Xiaodong; Li, Yongwang; Yang, Yong
• Is Part Of: Catalysis science & technology. Volume 11:Issue 19(2021)
• Page Start: 6564
• Page End: 6572
• Publication Date: 2021-09-09
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/d1cy00654a
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Catalysts with Co, Co3 C, and Co2 C phases are synthesized by controlling the carburization time. The catalyst with Co3 C phase exhibits the highest activity in FTS reaction. DFT calculations reveal the high intrinsic activity of Co3 C. Abstract : Cobalt is an important catalyst for the Fischer–Tropsch synthesis (FTS) reaction. We present a pretreatment process to enhance the activity of cobalt catalyst by carburizing it with an intermediate time. Cobalt catalyst carburized for 0.5 h showed higher activity than the cobalt catalyst without carburization and cobalt catalyst carburized for 2 h. TEM analysis revealed the existence of different phases of Co3 C, Co, and Co2 C for these catalysts, with Co3 C showing high activity for the FTS reaction. With the help of DFT calculations, we assessed the structure–performance relationships among the Co3 C, Co, and Co2 C, and found that Co3 C was more active for CO activation. Our study provides a new idea to rationally design Co-based FTS catalysts with high activity.