TIANJIN — Chinese scientists have developed a cost-effective and environmentally friendly catalyst for propylene production, the results published Friday in the journal Science.
This catalyst demonstrates exceptional selectivity and stability of propylene, which can reduce costs by 30 to 50 percent and ensure non-toxic and low energy consumption during catalyst preparation and use, according to the research team of Tianjin University’s Energy Adventure and Catalysis Team.
Propylene is one of the most widely produced chemicals in the world and serves as a fundamental raw material in the manufacture of plastics, rubber, fibers and pharmaceuticals.
By 2023, China’s propylene production has exceeded 60 million tons, accounting for about one-third of the world’s output, with a total value exceeding 600 billion yuan (about $84.1 billion).
Among the various propylene production technologies, propane dehydrogenation (PDH) is preferred due to its high economic efficiency and low dependence on petroleum. However, traditional PDH catalysts rely heavily on expensive platinum or highly toxic chromium oxide, making the process expensive and environmentally detrimental.
The research team proposed a scientific hypothesis that inexpensive and environmentally friendly oxides could electronically interact with metals, thereby improving the catalytic process. They developed a titanium-nickel oxide composite catalyst based on this hypothesis.
Scientists have refined the electron transfer between titanium oxide and nickel, improving catalytic activity while suppressing side reactions such as cracking and carbon deposition.
According to the researchers, this innovation offers a glimpse into the next generation of efficient, cost-effective and sustainable propylene catalysts.