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Ceria 3

ceria-zirconia 2

CO2 reduction 1

Carbon dioxide 1

Catalyst activation 1

Ce/Zr molar ratio 1

Crystallinity 1

Dry reforming of ethane 1

Elemental mercury removal 1

First-principles calculations 1

In situ spectroscopy 1

Methanation 1

MgO 1

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Nickel–ceria catalyst 1

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Photothermal 1

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Enhanced activity of bimetallic Fe-Cu catalysts supported on ceria toward water gas shift reaction: synergistic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1962-1972 doi: 10.1007/s11705-023-2359-z

Abstract: In this work, we propose bimetallic iron-copper catalysts supported on ceria, characterized by low active

Keywords： water gas shift     iron     copper     bimetallic catalysts     ceria     hydrogen    

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Preparation of ceria-zirconia solid solution with enhanced oxygen storage capacity and redox performance

Lijing MENG, Licheng LIU, Xuehong ZI, Hongxing DAI, Hong HE, Zhen ZHAO, Xinping WANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 164-171 doi: 10.1007/s11783-010-0019-2

Abstract: new method called ultrasonic-assisted membrane reaction (UAMR) was reported for the fabrication of ceria-zirconiaA series of ceria-zirconia solid solutions with different Ce/Zr molar ratios were prepared by the UAMRmethod proved to be superior, especially when the Ce/Zr molar ratio was lower than 1, in fabricating ceria-zirconia

Keywords： membrane reaction     ceria-zirconia     Ce/Zr molar ratio     solid solution     hydrogen temperature-programmed reduction    

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Methane partial oxidation over NiO-MgO/Ce

Piyawat PUE-ON, Vissanu MEEYOO, Thirasak RIRKSOMBOOON

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 3,   Pages 289-296 doi: 10.1007/s11705-013-1345-2

Abstract: Methane partial oxidation (MPO) is considered as an alternative method to produce hydrogen because it is an exothermic reaction to afford a suitable H /CO ratio of 2. However, carbon deposition on a catalyst is observed as a major cause of catalyst deactivation in MPO. In order to find suitable catalysts that prevent the carbon deposition, NiO-MgO/Ce Zr O (CZO) supported catalysts were prepared via the co-impregnation (C) and sequential incipient wetness impregnation (S) methods. The amount of Ni loading was fixed at 15 wt-% whereas the amount of MgO loading was varied from 5 to 15 wt-%. The results revealed that the addition of MgO shifted the light-off temperatures to higher temperatures. This is because the Ni surface was partially covered with MgO, and the strong interaction between NiO and NiMgO over CZO support led to the difficulty in reducing NiO to active Ni and thus less catalytic activity. However, among the catalysts tested, the 15Ni5Mg/CZO (S) catalyst exhibited the best catalytic stability for MPO after 18 h on stream at 750°C. Moreover, this catalyst had a better resistance to carbon deposition due to its high metallic Ni dispersion at high temperature.

Keywords： methane partial oxidation     NiO     ceria-zirconia     MgO     mixed oxide solid solution    

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Harnessing the Beneficial Attributes of Ceria and Titania in a Mixed-Oxide Support for Nickel-Catalyzed Article

Ee Teng Kho,Salina Jantarang,Zhaoke Zheng,Jason Scott,Rose Amal

Engineering 2017, Volume 3, Issue 3,   Pages 393-401 doi: 10.1016/J.ENG.2017.03.016

Abstract: Ceria (CeO2)-titania (TiO2) oxide supports of different compositions were employed>2 adsorption subsequently invokes effective photothermal CO2 methanation when the ceria

Keywords： Photothermal     CO2 reduction     Nickel     Ceria     Titania    

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New insights into mercury removal mechanism on CeO

Ling Li, Yu He, Xia Lu

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-018-1007-1

Abstract: First-principles calculations were performed to investigate the mechanism of Hg adsorption and oxidation on CeO (111). Surface oxygen activated by the reduction of Ce to Ce was vital to Hg adsorption and oxidation processes. Hg was fully oxidized by the surface lattice oxygen on CeO (111), without using any other oxidizing agents. HCl could dissociate and react with the Hg adatom on CeO (111) to form adsorbed Hg–Cl or Cl–Hg–Cl groups, which promoted the desorption of oxidized Hg and prevented CeO catalyst deactivation. In contrast, O–H and H–O–H groups formed during HCl adsorption consumed the active surface oxygen and prohibited Hg oxidation. The consumed surface oxygen was replenished by adding O into the flue gas. We proposed that oxidized Hg desorption and maintenance of sufficient active surface oxygen were the rate-determining steps of Hg removal on CeO -based catalysts. We believe that our thorough understanding and new insights into the mechanism of the Hg removal process will help provide guidelines for developing novel CeO -based catalysts and enhance the Hg removal efficiency.

Keywords： Elemental mercury removal     Surface adsorption     Ceria     First-principles calculations    

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Plasma-electrochemical synthesis of europium doped cerium oxide nanoparticles

Liangliang Lin, Xintong Ma, Sirui Li, Marly Wouters, Volker Hessel

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 501-510 doi: 10.1007/s11705-019-1810-7

Abstract: present study, a plasma-electrochemical method was demonstrated for the synthesis of europium doped ceria

Keywords： plasma-electrochemical method     europium doped ceria     rare earth nanoparticles     photoluminescence    

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Controlling the Reconstruction of Ni/CeO2 Catalyst during Reduction for Enhanced CO Methanation Article

Xinyu Cao,Tiancheng Pu,Bar Mosevitzky Lis,Israel E. Wachs,Chong Peng,Minghui Zhu,Yongkang Hu,

Engineering 2022, Volume 14, Issue 7,   Pages 94-99 doi: 10.1016/j.eng.2021.08.023

Abstract:

Reductive pretreatment is an important step for activating supported metal catalysts but has received little attention. In this study, reconstruction of the supported nickel catalyst was found to be sensitive to pretreatment conditions. In contrast to the traditional activation procedure in hydrogen, activating the catalyst in syngas created supported Ni nanoparticles with a polycrystalline structure containing an abundance of grain boundaries. The unique post-activation catalyst structure offered enhanced CO adsorption and an improved CO methanation rate. The current strategy to tune the catalyst structure via manipulating the activation conditions can potentially guide the rational design of other supported metal catalysts.

Keywords： Nickel–ceria catalyst     Catalyst activation     Crystallinity     Methanation     In situ spectroscopy    

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Dry Reforming of Ethane over FeNi/Al–Ce–O Catalysts: Composition-Induced Strong Metal–Support Interactions Article

Tao Zhang,Zhi-Cheng Liu,Ying-Chun Ye,Yu Wang,He-Qin Yang,Huan-Xin Gao,Wei-Min Yang,

Engineering 2022, Volume 18, Issue 11,   Pages 173-185 doi: 10.1016/j.eng.2021.11.027

Abstract:

Dry reforming of ethane (DRE) has received significant attention because of its potential to produce chemical raw materials and reduce carbon emissions. Herein, a composition-induced strong metal–support interaction (SMSI) effect over FeNi/Al–Ce–O catalysts is revealed via X-ray photoelectron spectroscopy (XPS), H2-temperature programmed reduction (TPR), and energy dispersive X-ray spectroscopy (EDS) elemental mapping. The introduction of Al into Al–Ce–O supports significantly influences the dispersion of surface active components and improves the catalytic performance for DRE over supported FeNi catalysts due to enhancement of the SMSI effect. The catalytic properties, for example, C2H6 and CO2 conversion, CO selectivity and yield, and turnover frequencies (TOFs), of supported FeNi catalysts first increase and then decrease with increasing Al content, following the same trend as the theoretical effective surface area (TESA) of the corresponding catalysts. The FeNi/Ce–Al0.5 catalyst, with 50% Al content, exhibits the best DRE performance under steady-state conditions at 873 K. As observed by with in situ Fourier transform infrared spectroscopy (FTIR) analysis, the introduction of Al not only increases the content of surface Ce3+ and oxygen vacancies but also promotes the dispersion of surface active components, which further alters the catalytic properties for DRE over supported FeNi catalysts.

Keywords： Dry reforming of ethane     Strong metal-support interaction     Carbon dioxide     Ceria     Oxygen vacancy     Reaction    

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Title Author Date Type Operation

Enhanced activity of bimetallic Fe-Cu catalysts supported on ceria toward water gas shift reaction: synergistic

Journal Article

Preparation of ceria-zirconia solid solution with enhanced oxygen storage capacity and redox performance

Lijing MENG, Licheng LIU, Xuehong ZI, Hongxing DAI, Hong HE, Zhen ZHAO, Xinping WANG,

Journal Article

Methane partial oxidation over NiO-MgO/Ce

Piyawat PUE-ON, Vissanu MEEYOO, Thirasak RIRKSOMBOOON

Journal Article

Harnessing the Beneficial Attributes of Ceria and Titania in a Mixed-Oxide Support for Nickel-Catalyzed

Ee Teng Kho,Salina Jantarang,Zhaoke Zheng,Jason Scott,Rose Amal

Journal Article

New insights into mercury removal mechanism on CeO

Ling Li, Yu He, Xia Lu

Journal Article

Plasma-electrochemical synthesis of europium doped cerium oxide nanoparticles

Liangliang Lin, Xintong Ma, Sirui Li, Marly Wouters, Volker Hessel

Journal Article

Controlling the Reconstruction of Ni/CeO2 Catalyst during Reduction for Enhanced CO Methanation

Xinyu Cao,Tiancheng Pu,Bar Mosevitzky Lis,Israel E. Wachs,Chong Peng,Minghui Zhu,Yongkang Hu,

Journal Article

Dry Reforming of Ethane over FeNi/Al–Ce–O Catalysts: Composition-Induced Strong Metal–Support Interactions

Tao Zhang,Zhi-Cheng Liu,Ying-Chun Ye,Yu Wang,He-Qin Yang,Huan-Xin Gao,Wei-Min Yang,

Journal Article