An efficient sorbent based on CuCl2 loaded CeO2-ZrO2 for elemental mercury removal from chlorine-free flue gas

Zhou, Zijian; Liu, Xiaowei; Hu, Yingchao; Liao, Zhibin; Cheng, Shan; Xu, Minghou

doi:10.1016/j.fuel.2017.11.134

Cited by 74 publications

(31 citation statements)

References 48 publications

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“…CeO 2 ‐ZrO 2 supported metal oxides/chlorides (MnO x , V 2 O 5 , CoO x , IrO 2 ,CuCl 2, RuO 2 ) have been extensively investigated for Hg 0 removal . For instance, Zhang et al .…”

Section: Hg0 Removalmentioning

confidence: 99%

“…CeO 2 as a Support CeO 2 -ZrO 2 supported metal oxides/chlorides (MnO x , V 2 O 5 , CoO x , IrO 2 ,CuCl 2, RuO 2 ) have been extensively investigated for Hg 0 removal. [78,100,101,108,110,111] For instance, Zhang et al [116] investigated the simultaneous removal of NO and Hg 0 through SCR catalysis using a V 2 O 5 /CeO 2 -ZrO 2 . The utilization of a CeO 2 -ZrO 2 support enhanced the texture and redox properties of V 2 O 5, leading to the abatement of both hazardous gases.…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

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Role of Ceria in the Design of Composite Materials for Elemental Mercury Removal

Jampaiah

Chalkidis

Sabri

et al. 2018

The Chemical Record

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The necessity to drastically act against mercury pollution has been emphatically addressed by the United Nations. Coal‐fired power plants contribute a great deal to the anthropogenic emissions; therefore, numerous sorbents/catalysts have been developed to remove elemental mercury (Hg0) from flue gases. Among them, ceria (CeO2) has attracted significant interest, due to its reversible Ce3+/Ce4+ redox pair, surface‐bound defects and acid‐base properties. The removal efficiency of Hg0 vapor depends among others, on the flue gas composition and temperature. CeO2 can be incorporated into known materials in such a way that the abatement process can be effective at different operating conditions. Hence, the scope of this account is to discuss the role of CeO2 as a promoter, active phase and support in the design of composite Hg0 sorbents/catalysts. The elucidation of each of these roles would allow the integration of CeO2 advantageous characteristics to such degree, that tailor‐made environmental solution to complex issues can be provided within a broader application scope. Besides, it would offer invaluable input to theoretical calculations that could enable the materials screening and engineering at a low cost and with high accuracy.

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“…CeO 2 ‐ZrO 2 supported metal oxides/chlorides (MnO x , V 2 O 5 , CoO x , IrO 2 ,CuCl 2, RuO 2 ) have been extensively investigated for Hg 0 removal . For instance, Zhang et al .…”

Section: Hg0 Removalmentioning

confidence: 99%

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

Role of Ceria in the Design of Composite Materials for Elemental Mercury Removal

Jampaiah

Chalkidis

Sabri

et al. 2018

The Chemical Record

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“…Hence, a variety of catalysts for mercury oxidation have been developed recently. Metal oxides, such as V 2 O 5 [13,14], Fe 2 O 3 [15], CeO 2 [16], MnO 2 [17], CuO [18], etc., have been loaded as active ingredients on the catalysts for mercury oxidation. Peña et al [19] found that the catalytic activity of the catalysts followed the sequence Mn > Cu > Cr > Co > Fe > V > Ni, which indicated that an Mn-based catalyst was an excellent choice for mercury oxidation.…”

Section: Introductionmentioning

confidence: 99%

Effect of Molybdenum on the Activity Temperature Enlarging of Mn-Based Catalyst for Mercury Oxidation

Zhao

Liang³

et al. 2020

Catalysts

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The MnO2/TiO2 (TM5) catalyst modified by molybdenum was used for mercury oxidation at different temperatures in a fixed-bed reactor. The addition of molybdenum into TM5 was identified as significantly enlarging the optimal temperature range for mercury oxidation. The optimal mercury oxidation temperature of TM5 was only 200 °C, with an oxidation efficiency of 95%. However, the mercury oxidation efficiency of TM5 was lower than 60% at other temperatures. As for MnO2–MoO3/TiO2 (TM5Mo5), the mercury oxidation efficiency was above 80% at 200–350 °C. In particular at 250 °C, the mercury oxidation efficiency of TM5Mo5 was over 93%. Otherwise, the gaseous O2, which could supplement the lattice oxygen in the catalytic reaction, played an important role in the process of mercury oxidation over TM5Mo5. The results of X-ray photoelectron spectroscopy (XPS) suggested that mercury oxidized by O2 over TM5Mo5 followed the Mars–Maessen mechanism.

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“…Currently, environmental problems have become more serious with the rapid development of energy‐intensive industry and various pollutants such as CO 2 , NO x , SO x , particulate matter (PM), and mercury . Particularly, it is widely recognized that the anthropogenic CO 2 emissions are the main reason for global warming .…”

Section: Introductionmentioning

confidence: 99%

Stabilized Performance of Al‐Decorated and Al/Mg Co‐Decorated Spray‐Dried CaO‐Based CO₂ Sorbents

et al. 2019

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The sharp loss-in-capacity in CO 2 capture as a result of sintering is a major drawback for CaO-based sorbents used in the calcium looping process. The decoration of inert supports effectively stabilizes the cyclic CO 2 capture performance of CaO-based sorbents via sintering mitigation. A range of Al-decorated and Al/Mg co-decorated CaO-based sorbents were synthesized via an easily scaled-up spraydrying route. The decoration of Al-based and Al/Mg-based supports efficiently enhanced the cyclic CO 2 capture capability of CaO-based sorbents under severe testing conditions. The CO 2 capture capacity losses of Al-decorated and Al/Mg co-decorated CaO-based sorbents were alleviated, representing more stable CO 2 capture performance. The stabilized CO 2 capture performance is mainly attributed to the formation of Ca 12 Al 14 O 33 , MgAl 2 O 4 , and MgO that act as the skeleton structures to mitigate the sintering of CaCO 3 during carbonation/calcination cycles.

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An efficient sorbent based on CuCl2 loaded CeO2-ZrO2 for elemental mercury removal from chlorine-free flue gas

Cited by 74 publications

References 48 publications

Role of Ceria in the Design of Composite Materials for Elemental Mercury Removal

Role of Ceria in the Design of Composite Materials for Elemental Mercury Removal

Effect of Molybdenum on the Activity Temperature Enlarging of Mn-Based Catalyst for Mercury Oxidation

Stabilized Performance of Al‐Decorated and Al/Mg Co‐Decorated Spray‐Dried CaO‐Based CO₂ Sorbents

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An efficient sorbent based on CuCl2 loaded CeO2-ZrO2 for elemental mercury removal from chlorine-free flue gas

Cited by 74 publications

References 48 publications

Role of Ceria in the Design of Composite Materials for Elemental Mercury Removal

Role of Ceria in the Design of Composite Materials for Elemental Mercury Removal

Effect of Molybdenum on the Activity Temperature Enlarging of Mn-Based Catalyst for Mercury Oxidation

Stabilized Performance of Al‐Decorated and Al/Mg Co‐Decorated Spray‐Dried CaO‐Based CO2 Sorbents

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Product

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Stabilized Performance of Al‐Decorated and Al/Mg Co‐Decorated Spray‐Dried CaO‐Based CO₂ Sorbents