沸石
酸强度
解吸
产量(工程)
化学工程
化学
无机化学
催化作用
Crystal(编程语言)
氨
材料科学
有机化学
复合材料
吸附
工程类
计算机科学
程序设计语言
作者
Shinya Kokuryo,Hasna Al Jabri,Koji Miyake,Yoshiyuki Uchida,Shunsuke Tanaka,Manabu Miyamoto,Yasunori Oumi,Norikazu Nishiyama
标识
DOI:10.1002/slct.202200756
摘要
Abstract In the long history of zeolite research, further enhancement of their acid strength has looked difficult. In this study, we achieved the enhancement by incorporating Ge into the zeolite framework. We synthesised the zeolites by a dry gel conversion method and characterised them in terms of morphology, crystal structure, and composition. We determined the acid strength of these zeolites by calculating the change in the enthalpy of desorption in the temperature‐programmed desorption of ammonia and confirmed that the acid strength of the zeolites with Ge was higher than that of a conventional zeolite. This enhancement of acid strength probably originated from the unprecedented interactions between Al and Ge, unlike the conventional interactions between Al and Si. The enhanced acid strength led to high efficiency of ethanol‐to‐propylene reactions, affording higher yield of propylene than that obtained using conventional zeolites.
科研通智能强力驱动
Strongly Powered by AbleSci AI