Alkali-activation of spent fluid cracking catalysts for CO2 capture
Alkali-activation of spent fluid cracking catalysts for CO2 capture
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DOI：
10.1016/j.micromeso.2016.06.005
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发表时间：
2016-09
影响因子：
5.2
通讯作者：
J. S. Silva;Raimundo Medeiros de Jesus-Neto;Raildo A. Fiuza;J. P. Gonçalves;A. Mascarenhas;H. Andrade
中科院分区：
文献类型：
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作者：
J. S. Silva;Raimundo Medeiros de Jesus-Neto;Raildo A. Fiuza;J. P. Gonçalves;A. Mascarenhas;H. Andrade
以废液裂解催化剂中残留的USY相为沸石结构单元，通过NaOH溶液活化制备沸石材料，并对所制备的材料进行表征（XRD、EDX、SEM、FTIR和N2物理吸附）并进一步测试其作为CO2吸附剂的性能。所得材料含有ZK-14（CHA）、P-1（GIS）、ZK-4（LTA）、方沸石（ANA）和γ-氧化铝沸石，但相分布主要取决于Na/Si原子比和反应温度。复合材料中的高微孔表面积和沸石相的组成是控制 CO2 吸收的主要特征，并且 ZK-14 (CHA) 含量越来越高的样品实现了高吸收。
Residual USY phase in waste fluid craking catalysts were used as zeolitic building blocks to prepare zeolite materials by activation with NaOH solutions and the prepared materials were characterized (XRD, EDX, SEM, FTIR and N2physisorption) and further tested as CO2adsorbents. The resulting materials contained zeolites ZK-14 (CHA), P-1 (GIS), ZK-4 (LTA), Analcime (ANA) and γ-alumina, but the phase distribution mainly depended on the Na/Si atom ratio and reaction temperature. High micropore surface area and the composition of the zeolitic phases in the composite were the main characteristic controlling the CO2uptakes and high uptakes were achieved by the samples with increasingly high ZK-14 (CHA) contents.