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Journal Article 15

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2023 2

2022 2

2019 2

2018 2

2017 1

2015 1

2013 2

2011 1

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Keywords

Ceria 3

ceria-zirconia 2

yttria stabilized zirconia (YSZ) 2

Al2O3 1

Alumina 1

Binder 1

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

Fe-BEA 1

First-principles calculations 1

In situ spectroscopy 1

Memory device 1

Methanation 1

MgO 1

NH3-SCR 1

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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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Selective conversion of cellulose to hexitols over bi-functional Ru-supported sulfated zirconia and silica-zirconia

Zhiqiang Song,Hua Wang,Yufei Niu,Xiao Liu,Jinyu Han

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 461-466 doi: 10.1007/s11705-015-1543-1

Abstract: selective conversion of microcrystalline cellulose to hexitols over bi-functional Ru-supported sulfated zirconiaand silica-zirconia catalysts.Monoclinic zirconia appeared at the calcination temperature of 873 K, and the content of monoclinic phaseCompared with sulfated zirconia catalyst, sulfated silica-zirconia catalysts possessed a higher ratioThe reaction results indicated that the tetragonal zirconia, which is necessary for the formation of

Keywords： hexitols     cellulose     hydrogenation     sulfated zirconia     ruthenium    

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Effect of alumina and zirconia as binders on the activity of Fe-BEA for NH

Jin Shi, Zihao Zhang, Mingxia Chen, Zhixiang Zhang, Wenfeng Shangguan, Shunchao Gu, Hirano Shin-ichi

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-018-1012-4

Abstract: The addition of alumina and zirconia as binders to the Fe-BEA led to a different effect on NO conversionFor the Fe-BEA with zirconia sample, NO oxidation and storage abilities decreased due to the less iron

Keywords： NH3-SCR     NO     Fe-BEA     Binder     Alumina     Zirconia    

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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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total oxidizable carbon, phosphate and various metallic ions from HO solution with amino-functionalized zirconia

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 470-482 doi: 10.1007/s11705-022-2231-6

Abstract: Amino-functionalized zirconia was synthesized by the co-condensation method using zirconium butanol andFourier transform infrared (FTIR) and Zeta potential showed that the content of N in amino-functionalized zirconiaconducted using simulated solutions showed that the adsorption process of phosphate on amino-functionalized zirconia

Keywords： adsorption     zirconia     total oxidizable carbon     phosphate     metallic ions     hydrogen peroxide    

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Polysulfone and zirconia composite separators for alkaline water electrolysis

Li XU, Wei LI, Yan YOU, Shaoxing ZHANG, Yingchun ZHAO

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 154-161 doi: 10.1007/s11705-013-1331-8

Abstract: The novel composite separators composed of polysulfone and zirconia were prepared by phase inversion

Keywords： phase inversion     separator     alkaline water electrolysis     mechanical and chemical stability    

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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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Zirconia quantum dots for a nonvolatile resistive random access memory device Regular Papers

Xiang-lei HE, Rui-jie TANG, Feng YANG, Mayameen S. KADHIM, Jie-xin WANG, Yuan PU, Dan WANG

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 12,   Pages 1698-1705 doi: 10.1631/FITEE.1900363

Abstract: We propose a nonvolatile resistive random access memory device by employing nanodispersion of zirconia

Keywords： Zirconia quantum dot     Resistive switching     Memory device     Spin coating    

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Brazing of ceramic-to-ceramic and ceramic-to-metal joints in air

Kirsten BOBZIN, Thomas SCHLAEFER, Lidong ZHAO, Nils KOPP, Arne SCHLEGEL

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 125-129 doi: 10.1007/s11465-010-0007-z

Abstract: alloys could also be used to produce brazed joints with the SOFC materials ceramic yttria stabilized zirconia

Keywords： reactive air brazing (RAB)     X1CrTiLa22     Al2O3     yttria stabilized zirconia (YSZ)     solid    

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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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Preparation and characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings by high-energy ball milling

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 176-181 doi: 10.1007/s11465-011-0220-4

Abstract:

High-energy ball milling is an effective method to produce nanocrystalline oxides. In this study, a conventional ZrO2-7%Y2O3spray powder was ball-milled to produce nanocrystalline powders with high levels of crystalline disorders for deposition of thermal barrier coatings. The powder was milled both with 100Cr6 steel balls and with ZrO2-3%Y2O3 ceramic balls as grinding media. The milling time was varied in order to investigate the effect of the milling time on the crystallite size. The powders were investigated in terms of their crystallite sizes and morphologies by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that under given milling conditions the powder was already nanostructured after 40 min milling. The crystallite size decreased significantly with increasing milling time within first 120 min. After that, a further increase of milling time did not lead to a significant reduction of the crystallite size. Ball-milling led to lattice microstrains. Milling with the steel balls resulted in finer nano-sized crystal grains, but caused the contamination of the powder. The nano-sized crystal grains coarsened during the heat-treatment at 1250°C.

Keywords： nanostrucured powders     yttria stabilized zirconia (YSZ)     high-energy ball milling     thermal barrier coatings    

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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

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

Selective conversion of cellulose to hexitols over bi-functional Ru-supported sulfated zirconia and silica-zirconia

Zhiqiang Song,Hua Wang,Yufei Niu,Xiao Liu,Jinyu Han

Journal Article

Effect of alumina and zirconia as binders on the activity of Fe-BEA for NH

Jin Shi, Zihao Zhang, Mingxia Chen, Zhixiang Zhang, Wenfeng Shangguan, Shunchao Gu, Hirano Shin-ichi

Journal Article

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

Journal Article

total oxidizable carbon, phosphate and various metallic ions from HO solution with amino-functionalized zirconia

Journal Article

Polysulfone and zirconia composite separators for alkaline water electrolysis

Li XU, Wei LI, Yan YOU, Shaoxing ZHANG, Yingchun ZHAO

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

Zirconia quantum dots for a nonvolatile resistive random access memory device

Xiang-lei HE, Rui-jie TANG, Feng YANG, Mayameen S. KADHIM, Jie-xin WANG, Yuan PU, Dan WANG

Journal Article

Brazing of ceramic-to-ceramic and ceramic-to-metal joints in air

Kirsten BOBZIN, Thomas SCHLAEFER, Lidong ZHAO, Nils KOPP, Arne SCHLEGEL

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

Preparation and characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings by high-energy ball milling

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

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