Li Xinxin, Zhang Weiwei, Miao Guang, Wu Zhikang, Wang Xingjie, Wei Xuan, Liu Zewei, Tang Hao, Yang Cuiting, Xiao Jing
Guangdong Provincial Key Laboratory of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, P.R. China.
State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, P.R. China.
Sci Adv. 2025 Jul 25;11(30):eadt9498. doi: 10.1126/sciadv.adt9498. Epub 2025 Jul 23.
Separating perfluorinated cyclopropane/propane mixtures is critical yet challenging for sustainably producing high-purity perfluropropane in the advanced electronics industry. Conventional one-step adsorption separation methods lack proper selectivity due to similar molecular sizes and properties. We introduce a tandem reaction-adsorption approach with ultrahigh selectivity and low-pressure uptake. The initial step converts perfluorinated cyclopropane into olefins, enhancing molecular size and polarity differences and enabling efficient sieving using a scalable, stable molecular sieve developed. The method achieves selectivity over two orders of magnitude higher than conventional methods, producing 99.9999% pure perfluropropane at 12.5 liters per kilogram per hour with a 98.8% yield in the fixed beds. The tandem reaction-adsorption methodology introduces an efficient route for separating and purifying industrially challenging gas analogs.
对于先进电子行业可持续生产高纯度全氟丙烷而言，分离全氟环丙烷/丙烷混合物至关重要但具有挑战性。由于分子大小和性质相似，传统的一步吸附分离方法缺乏适当的选择性。我们引入了一种具有超高选择性和低压吸附的串联反应-吸附方法。第一步将全氟环丙烷转化为烯烃，增强了分子大小和极性差异，并能够使用开发的可扩展、稳定的分子筛进行高效筛分。该方法实现的选择性比传统方法高出两个数量级以上，在固定床中以每千克每小时12.5升的速度生产出纯度为99.9999%的全氟丙烷，产率为98.8%。串联反应-吸附方法为分离和纯化工业上具有挑战性的气体类似物引入了一条有效途径。
