Cu–Cr–O
Functionalized ETS-2 Nanoparticles for Hot Gas Desulfurization
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Type
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Journal
Article
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Author
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Farzad
Yazdanbakhsh
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Author
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Moien
Alizadehgiashi
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Volume
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16
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Issue
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1
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Pages
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878-884
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Publication
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Journal
of Nanoscience and Nanotechnology
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Date
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2016-01-01
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URL
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Abstract
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Engelhard
Titanium Silicate-2 (ETS-2), a sodium nanotitanate, was surface
functionalized by ion exchanging the solid with copper and chromium ions.
Researchers assessed the ability of this bi-metallic adsorbent to remove H2S
at elevated temperatures using a dynamic breakthrough system, which they
compared to an analogous mixed metal oxide, Cu–Cr–O. Unlike Cu–Cr–O, the H2S
capacity for CuCr-ETS-2 remains unchanged from 350 °C up to 950 °C.
Using ETS-2 as a support for the metals increased the adsorbents surface area and improved its sulfur capacity from 35 mg H2S/g for Cu–Cr–O to 61 mg H2S/g adsorbent for CuCr-ETS-2. The consistent presence of Cu9S5 on the sulfided adsorbents would indicate that chromium effectively stabilizes the copper against reduction to metallic copper up to temperatures as high as 950 °C. |
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