Highly dispersed transition metal oxide-supported activated carbon prepared by plasma for removal of elemental mercury

Yu, Wangsheng; Zhang, Lei; He, Xu; Wang, Hui; Peng, Xianghe; Wu, Shengji; Yang, Wei; Zhou, Jie

doi:10.1016/j.fuel.2020.119427

Cited by 17 publications

(4 citation statements)

References 47 publications

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“…In addition, Yu et al 62 pointed out that plasma-treated CeO 2 /AC-P and Co 3 O 4 /AC-P sorbents outperformed their counterparts obtained via traditional heating treatments. Plasma treatment led to a higher dispersion of active sites and stronger redox properties of metal oxides as compared with calcination treatment.…”

Section: Copper Oxide (Cuo)mentioning

confidence: 99%

Copper-Based Sorbents and Catalysts for Elemental Mercury Removal from Gas Stream: A Review

Liu

2023

Ind. Eng. Chem. Res.

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Mercury emission has become a global concern due to the potential risks Hg poses to human health and the environment. Currently, copper-based compounds, such as CuCl 2 , CuO, CuS, and CuSe, have attracted great attention in mercury emission control, because of their low cost and decent removal efficiency. This review provides an overview of the recent progress on adsorptive and catalytic oxidation removal of elemental mercury over copper-based composites. Supported CuCl 2 can majorly serve as an inexpensive and efficient catalyst toward Hg 0 oxidation. Nevertheless, the high volatility and water solubility of mercury chloride may cause halogen release and a potential leaching risk of mercury, respectively. Due to its superior redox property, CuO is fairly active in Hg 0 oxidation. Metal incorporation can distinctly strengthen the mercury removal performance. However, CuO-based composites can be easily poisoned or suppressed by flue gas constituents owing to the generation of inactive copper sulfates/nitrates or competitive adsorption. CuS-based composites appear to be the most promising sorbents for mercury capture, because of strong Hg 0 affinities and remarkable tolerances to steam and sulfur dioxide. CuSe-based composites show mercury capture performances similar to those of CuS-based composites. However, tedious synthetic processes and expensive Se precursors hinder their industrial implementation.

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Section: Copper Oxide (Cuo)mentioning

confidence: 99%

Copper-Based Sorbents and Catalysts for Elemental Mercury Removal from Gas Stream: A Review

Liu

2023

Ind. Eng. Chem. Res.

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“…However, utilization of supporting gases such as nitrogen along with CDPT could reduce surface features. [80] Furthermore the heat resulting from N 2 plasma treatment can induce pore wall destruction. As a result, groups of small pores can converte in to few large pores decreasing the surface area.…”

Section: Utilization Of Carbon Dioxide Plasmamentioning

confidence: 99%

“…Many researchers have reported that the addition of positively and negatively charged functional groups to the surface through plasma activation of desired CM play a critical role in enhancing the adsorption process through electrostatic interactions. [34,37,40,[42][43]57] As discussed previously these functional groups can be introduced to the surface using OPT, [57,[59][60] APT, [37,44,76] CDPT, [38][39]80] AAPT [31,46,51] and using specific gases for plasma treatment. [42][43] The AAPT activations are perhaps the most effective due to the cheaper experimental conditions and its ability to form both acidic and basic (positive and negative) functional groups on the material surface.…”

Section: Adsorbent Rolementioning

confidence: 99%

“…[83] Yu et al have also observed a positive co-relationship between the utilization of CDPT and the catalytic activity. [80] The utilization of NGPT has also displayed a positive influence on catalytic activity. [81] Significantly, NGPT facilitated metal loading onto the surface of CMs in addition to improving surface morphological features.…”

Section: Catalyst Rolementioning

confidence: 99%

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Sustainable Synthesis of Highly Functionalized Activated Carbon using Plasma Technology

et al. 2022

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dielectric barrier discharge (DBD), arc, radio frequency (RF) and microwave (MW) for the surface functionalization. Most of the researchers have experienced both positive and negative corelationships between principal parameters and surface functional groups (SFGs), surface area, porosity and other surface features such as roughness and hydrophilicity. However, a comprehensive review on the effects of these parameters on the final material properties is lacking. Therefore, this Review focuses on the recent developments in the utilization of plasma as a surface activation technique for activated carbon. Furthermore, an in-depth analysis of the relationship between experimental parameters and the resultant surface features of activated carbon is carried out and discussed. The functionalization mechanisms related to plasma activation have also been illustrated. The aging effect, which negatively impacts surface functionalized activated carbon, is also emphasized. Finally, the recent advances in applications of SFAC, challenges and future perspectives are discussed in detail.

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Metal Oxide-Based Adsorbents for Removal of Mercury in Aqueous Media: A Mini-Review

Raheem,

Oke,

Oluyinka

et al. 2024

Chemistry Africa

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Highly dispersed transition metal oxide-supported activated carbon prepared by plasma for removal of elemental mercury

Cited by 17 publications

References 47 publications

Copper-Based Sorbents and Catalysts for Elemental Mercury Removal from Gas Stream: A Review

Copper-Based Sorbents and Catalysts for Elemental Mercury Removal from Gas Stream: A Review

Sustainable Synthesis of Highly Functionalized Activated Carbon using Plasma Technology

Metal Oxide-Based Adsorbents for Removal of Mercury in Aqueous Media: A Mini-Review

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