Cu Nanoparticles Inlaid Mesoporous Carbon Aerogels as a High Performance Desulfurizer

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• 作者：Jiang Wu ; Siyuan Yang ; Qizhen Liu ; Ping He ; Huan Tian ; Jianxing Ren ; ZhenZhen Guan ; Tao Hu ; Bu Ni ; Chong Zhang
• 刊名：Environmental Science & Technology
• 出版年：2016
• 出版时间：May 17, 2016
• 年：2016
• 卷：50
• 期：10
• 页码：5370-5378
• 全文大小：646K
• 年卷期：0
• ISSN：1520-5851

文摘

In the present study, to insert the Cu nanoparticles (NPs) into mesoporous carbon aerogels and first applied it to remove H₂S efficiently. This desulfurizer was made based on the dimensional policy by inserting the Cu NPs on mesoporous carbon aerogels to overcome the sintering problem and improve the activity, which has potential performance at high-temperature catalysis. The obtained desulfurizer was employed for H₂S removal at middle temperature conditions (optimal H₂S adsorption at 550 °C). We explored the optimum doping amount of CuO_x, optimum temperature conditions, and the influence of textural parameters of carbon aerogels. The desulfurizers were characterized by means of field-emission scanning electron microscopy (FESEM), N₂-adsorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), H₂ temperature-programmed reduction (H₂-TPR), and Raman spectra techniques. The results confirmed that the presence of H₂ was unfavorable for sulfidation and obviously shortened the breakthrough time. However, the existence of CO had little impact on the desulfurization and sulfur capacity. In a nutshell, this work could provide a new synthetic route to prepare Cu NPs deep into the lattice of carbon aerogels structure of desulfurizers and understand the desulfurization mechanism.