Application of Uniform Design Method in the Optimization of Hydrothermal Synthesis for Nano MoS₂ Catalyst with High HDS Activity

• Main Authors: Haiping Zhang, Hongfei Lin, Ying Zheng
• Format: Article
• Language: English
• Published: MDPI AG 2018-12-01
• Series: Catalysts
• Subjects: uniform design; MoS₂; hydrothermal; hydrodesulfurization; low temperature
• Online Access: https://www.mdpi.com/2073-4344/8/12/654

The optimization of catalyst synthesis conditions using traditional single factor method involves extensive experimental time and costs. To overcome the drawbacks, a uniform design method was applied in the hydrothermal synthesis of nano MoS₂ catalyst. An optimal synthesis condition is reached with only a few trials. Catalyst synthesis temperature is reduced to 200 °C. The catalyst synthesized at the screened condition shows high hydrotreating activities. The results conclude that the catalyst has thread-like slabs with a lattice structure that is less mature than fully developed MoS₂. The characterization results indicate that the appearance of such structure may be due to the weak links of successive MoS₂ nuclei. The high catalytic activity is a result of the layered structure and a significantly large number of defects on the slabs.