Effects of Promoter and Calcination Temperatures on the Catalytic Performance of Y Promoted Co/WC-AC for Dry Reforming of Methane

Tianshan Li; Jiming Wang; Guojie Zhang; Jun Liu; Ying Wang; Yuqing Zhao; Guoqiang Li; Yongkang Lv

doi:10.1002/asia.202300319

Effects of Promoter and Calcination Temperatures on the Catalytic Performance of Y Promoted Co/WC-AC for Dry Reforming of Methane

Chem Asian J. 2023 Jul 3;18(13):e202300319. doi: 10.1002/asia.202300319. Epub 2023 Jun 1.

Authors

Tianshan Li^{1

2}, Jiming Wang^{1

3}, Guojie Zhang^{1

2}, Jun Liu^{4

5}, Ying Wang^{1

2}, Yuqing Zhao^{1

2}, Guoqiang Li^{1

2}, Yongkang Lv^{1

2}

Affiliations

¹ State Key Laboratory of Clean and Efficient Coal Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China.
² Key Laboratory of Coal Science and Technology, Ministry of Education Institution, Taiyuan University of Technology, Taiyuan, 030024, P. R. China.
³ School of Chemical Engineering, Dalian University of Technology, Dalian, 116023, P. R. China.
⁴ College of Chemistry, Taiyuan University of Technology, Taiyuan, 030024, P. R. China.
⁵ National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing, 100084, P. R. China.

PMID: 37212174
DOI: 10.1002/asia.202300319

Abstract

CH₄ -CO₂ reforming is a good way to convert two environmentally harmful greenhouse gases into a high value syngas. However, the catalytic activity and stability of the catalysts need to be further improved. In this paper, the effects of promoter Y and calcination temperature on the catalytic activity and stability of Co/WC-AC catalysts were investigated. The catalysts were characterized by BET, XRD, CO₂ -TPD, H₂ -TPR, XPS, and TG-DSC. XPS and H₂ -TPR. The results indicated that the introduction of Y decreased the reduction temperature of Co₂ O₃ species and facilitated the formation of Co²⁺ species. Meanwhile, the addition of Y increased the content of lattice oxygen on the catalyst surface, which enhanced the carbon elimination capacity of the catalyst. The TG-DSC results showed that the activity and stability of the catalysts calcined at 550 °C were poor due to the presence of carbon materials with weak carbon interactions on the catalyst support surface. Meanwhile, the catalyst calcined at 700 °C lead to the collapse of the pores due to the high calcination temperature, which eventually led to the decrease of the catalyst stability. It was found that the Co-Y/WC-AC catalysts prepared at the calcination temperature of 600 °C had the best catalytic activity and stability.

Keywords: Calcination temperature; Dry reforming of methane; Hydrogen; Tungsten carbide; Yttrium.

Abstract

Grants and funding