将微米级FAU沸石转化为无有机结构导向剂的纳米级CHA沸石，且具有高CO吸附容量。
Interzeolite conversion of a micronsized FAU to a nanosized CHA zeolite free of organic structure directing agent with a high CO capacity.
作者信息
Møller Kristoffer H, Debost Maxime, Lakiss Louwanda, Kegnæs Søren, Mintova Svetlana
机构信息
Technical University of Denmark, Department of Chemistry Kemitorvet 207, 2800 Kongens Lyngby Denmark
ENSICAEN, Laboratoire Catalyse & Spectrochimie 6 Boulevard Maréchal Juin 14050 Caen Cedex 4 France
出版信息
RSC Adv. 2020 Nov 25;10(70):42953-42959. doi: 10.1039/d0ra04937a. eCollection 2020 Nov 23.
The interzeolite transformation of a micronsized FAU zeolite to a nanosized CHA zeolite alkali treatment is presented. The impact of the selection of the FAU zeolite starting material on the properties of the produced CHA zeolite was analyzed by XRD, ICP, SEM, TEM, N and CO adsorption, and FT-IR. The analysis showed that the choice of starting FAU zeolite had a large impact on the chemical composition, size, morphology, and porosity of the produced CHA zeolite. The as prepared CHA samples show high capacity toward CO (4.26 mmol g) and it was demonstrated that the chemisorbed physisorbed CO was controlled by varying the amount of alkali cations in the CHA zeolite.
本文介绍了微米级FAU沸石通过碱处理向纳米级CHA沸石的沸石间转化。通过XRD、ICP、SEM、TEM、N和CO吸附以及FT-IR分析了起始FAU沸石的选择对所制备CHA沸石性能的影响。分析表明，起始FAU沸石的选择对所制备CHA沸石的化学组成、尺寸、形态和孔隙率有很大影响。所制备的CHA样品对CO具有高吸附容量（4.26 mmol g），并且证明通过改变CHA沸石中碱阳离子的量可以控制化学吸附和物理吸附的CO。
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