A highly selective and stable ZnO-ZrO₂ solid solution catalyst for CO₂ hydrogenation to methanol

A highly selective and stable ZnO-ZrO₂ solid solution catalyst for CO₂ hydrogenation to methanol

Wang, Jijie (Dalian University of Technology)
Li, G. (TU Delft ChemE/Catalysis Engineering; Dalian University of Technology)
Li, Zelong (Dalian University of Technology)
Tang, Chizhou (Dalian University of Technology)
Feng, Zhaochi (Dalian University of Technology)
An, Hongyu (Chinese Academy of Sciences)
Liu, Hailong (Dalian University of Technology)
Liu, Taifeng (Dalian University of Technology)
Li, Can (Dalian University of Technology)

2017

Although methanol synthesis via CO hydrogenation has been industrialized, CO₂ hydrogenation to methanol still confronts great obstacles of low methanol selectivity and poor stability, particularly for supported metal catalysts under industrial conditions. We report a binary metal oxide, ZnO-ZrO₂ solid solution catalyst, which can achieve methanol selectivity of up to 86 to 91% with CO₂ single-pass conversion of more than 10% under reaction conditions of 5.0 MPa, 24,000 ml/(g hour), H₂/CO₂ = 3:1 to 4:1, 320° to 315°C. Experimental and theoretical results indicate that the synergetic effect between Zn and Zr sites results in the excellent performance. The ZnO-ZrO₂ solid solution catalyst shows high stability for at least 500 hours on stream and is also resistant to sintering at higher temperatures. Moreover, no deactivation is observed in the presence of 50 ppm SO₂ or H₂S in the reaction stream.

http://resolver.tudelft.nl/uuid:219f5cf0-cc0e-442e-b627-7979ad910920

https://doi.org/10.1126/sciadv.1701290

2375-2548

Science Advances, 3 (10)

Institutional Repository

journal article

© 2017 Jijie Wang, G. Li, Zelong Li, Chizhou Tang, Zhaochi Feng, Hongyu An, Hailong Liu, Taifeng Liu, Can Li