赤泥
碱度
催化作用
钾
制浆造纸工业
拜耳法
化学
废物管理
环境科学
有机化学
工程类
铝
物理化学
作者
Artem Russkikh,Genrikh Shterk,B.H. Alsolami,Bandar A. Fadhel,Adrián Ramírez,Jorge Gascón
出处
期刊:Chemsuschem
[Wiley]
日期:2020-04-28
卷期号:13 (11): 2981-2987
被引量:27
标识
DOI:10.1002/cssc.202000242
摘要
Abstract Since 1887, red mud has been an unavoidable waste derived from the production of alumina in the Bayer process. Because of its high alkalinity and metal loading, red mud disposal and storage constitute a significant environmental risk. With worldwide storage capacity reaching its limits and no alternatives to the Bayer Process, the development of methods for the valorization of red mud is a must. In this study, red mud is converted into an efficient catalyst for the valorization of CO 2 . By simple potassium promotion, 45 % conversion of CO 2 with a light olefin (C 2 –C 4 ) selectivity of 36 % is achieved at 375 °C, 30 bar, and 9600 mL g −1 h −1 , matching the performance of some of the best catalysts reported to date.
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