Group 1 - A new catalyst has been developed by researchers from Anhui University of Technology and other institutions, enabling the direct synthesis of para-xylene from carbon dioxide and hydrogen, breaking the world record for production efficiency of such catalysts [1][2] - Para-xylene (PX) is a critical raw material for producing chemical products, with an annual demand in China exceeding 30 million tons. The traditional production method relies on processing heavy oil, which is energy-intensive and generates high emissions [1] - The new method utilizes renewable energy to produce hydrogen, which is then reacted with carbon dioxide to manufacture PX, offering a greener alternative to conventional high-energy and high-emission production processes [1] Group 2 - The newly developed "metal oxide-molecular sieve" composite catalyst operates in two parts: the metal oxide facilitates the reaction between carbon dioxide and hydrogen to form simple olefins, while the molecular sieve assembles these olefins into the final PX product [2] - The molecular sieve has been designed with a unique "capsulation" approach to minimize impurities in the final product, resulting in unprecedented production efficiency, with over 1 kilogram of PX produced per kilogram of catalyst in a day [2] - The design concept of the composite catalyst is considered universal, with potential applications in other reaction systems that utilize carbon dioxide and hydrogen to produce high-value chemical products, enabling customized production [2]
全新催化剂让二氧化碳合成对二甲苯
Ke Ji Ri Bao·2025-06-17 01:31