Researchers in China have made a groundbreaking discovery in methanol production that could have far-reaching implications for green energy and environmental sustainability. Scientists from the Dalian Institute of Chemical Physics at the Chinese Academy of Sciences have developed a novel catalyst enabling the conversion of methane to methanol at room temperature with minimal by-products.
Methanol, also known as wood alcohol, plays a pivotal role in the production of fuels, plastics, and medicines. Converting the stable methane molecule into higher-value methanol has long been considered a significant challenge in the field of chemistry.
Traditional methods for breaking carbon-hydrogen bonds in methane molecules required extreme conditions, including temperatures exceeding 600 degrees Celsius and the use of strong oxidizing agents like fuming sulfuric acid or external fields like plasma. These conditions often led to over-conversion, producing undesirable by-products like carbon dioxide.
The newly developed Chinese method, however, represents a breakthrough. It utilizes low-cost, eco-friendly oxygen to facilitate the direct conversion of methane at room temperature, eliminating the need for extreme conditions.
Led by Professor Deng Dehui and Yu Liang at the State Key Laboratory of Catalysis at the Dalian Institute, the research team created active reaction sites on the surface of MoS2, a two-dimensional material. Modified Mo atoms on the material’s surface broke down oxygen molecules at room temperature, forming highly reactive molybdenum-oxygen clusters that reacted directly with methane.
In contrast to previous multi-step reactions with low conversion rates, this innovative catalytic system achieved direct oxidation with an impressive conversion rate of 4.2 percent at room temperature. Furthermore, the process generated few by-products, with product selectivity exceeding 99 percent.
Methanol, as a vital chemical intermediate, is used in the production of formaldehyde, dimethyl ether, acetic acid, and is gaining attention as a cleaner energy source, particularly as a marine fuel. China’s methanol production capacity exceeds 100 million tonnes, with approximately 10 percent produced from natural gas. This breakthrough offers a new perspective on low-energy, low-carbon methanol production from natural gas, potentially reducing energy consumption and equipment maintenance demands in industrial applications. The research was published in the peer-reviewed journal Nature Catalysis on September 21.