Influence of microporosity of activated carbons as a support of polyoxometalates
Influence of microporosity of activated carbons as a support of polyoxometalates
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DOI：
10.1016/j.micromeso.2008.02.017
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发表时间：
2008-11-01
影响因子：
5.2
通讯作者：
Macia-Agullo, J. A.
中科院分区：
文献类型：
--
作者：
Alcaniz-Monge, J.;Trautwein, G.;Macia-Agullo, J. A.
将H-3[PMo12O40] （PMO）负载在4种活性炭（AC）上，分析了AC的多孔结构对PMO吸附的影响，研究了它们的吸附位置以及它们的吸附如何改变AC的多孔结构。AC上吸附PMO的量与多孔结构有明显的相关性，微孔隙度是最好的证据。这种相关性表明，由于PMo的尺寸，PMo只能吸附在超微孔中，这限制了最小微孔（约0.8 nm）的进入。XRD结果表明，PMo被吸附在微孔壁上，分散程度高，不形成结晶相。(c) 2008爱思唯尔公司版权所有。
H-3[PMo12O40] (PMO) was supported on four activated carbons (AC) in order to analyze the influence that the porous texture of AC exercises in the adsorption of PMo, trying to study where they are adsorbed and how their adsorption modifies the porous texture of AC. The amount of PMo adsorbed on AC follows a clear correlation with the porous texture, microporosity being the best evidence for this. Such a correlation indicates that PMo is only adsorbed in supermicroporosity as a consequence of the size of PMo, which limits the entrance on the smallest micropores, about 0.8 nm. XRD results indicate that the PMo is adsorbed on the micropore wall, that it is highly dispersed and that it does not develop any crystalline phase. (c) 2008 Elsevier Inc. All rights reserved.