Chinese Scientists Engineer Breakthrough Hydroxyl-Induced Catalyst for High-Efficiency Syngas-to-Olefins Conversion

Chinese researchers develop a hydroxyl-induced cobalt oxide catalyst, achieving 60% selectivity for light olefins in Fischer-Tropsch synthesis.

By: AXL Media

Published: Apr 1, 2026, 11:10 AM EDT

Source: Information for this report was sourced from Dalian Institute of Chemical Physics, Chinese Academy Sciences

Revolutionizing the Fischer-Tropsch Synthesis Framework

The production of light olefins—including ethylene, propylene, and butylene—serves as the backbone of the modern plastics and synthetic rubber industries. Traditionally, these hydrocarbons are derived through Fischer-Tropsch synthesis, a process that converts syngas (a mixture of carbon monoxide and hydrogen) into various carbon chains. However, maintaining high efficiency and specific selectivity for light olefins has historically been a significant technical hurdle. A new study led by Professor Sun Jian at the Dalian Institute of Chemical Physics (DICP) addresses this challenge by proposing a catalytic strategy that redefines how carbon-oxygen bonds are broken and carbon-carbon chains are formed.

The Role of Hydroxyl-Induced Catalytic Interfaces

The core of this breakthrough lies in the dynamic evolution of catalyst structures during active reaction conditions. By introducing specific hydroxyl promoters into a sodium-cobalt-manganese catalyst system, the research team successfully constructed a hydroxyl-rich reaction interface. This environment induced the formation of low-symmetry, anorthic cobalt-manganese composite oxides. According to the study published in Nature, these asymmetrical oxide structures proved to be far more effective at carbon monoxide (CO) activation than their more symmetrical counterparts. This precise structural engineering allowed the catalyst to initiate the chemical transformation with unprecedented accuracy.

Achieving High Selectivity in Low-Pressure Environments

The efficiency of the new catalytic strategy is evidenced by its performance at relatively mild industrial temperatures and pressures. Operating at 250–260 °C and just 0.1 MPa, the catalyst achieved a CO conversion rate between 70% and 82%. Most notably, the selectivity for light olefins exceeded 60%, a figure that represents a substantial improvement over conventional methods. This high yield was maintained across varying hydrogen-to-carbon monoxide ratios, demonstrating a flexibility that is vital for scaling the process to industrial levels while maximizing carbon utilization efficiency.