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Chemical deactivation of V

Xiaodong WU, Wenchao YU, Zhichun SI, Duan WENG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 420-427 doi: 10.1007/s11783-013-0489-0

Abstract: V O -WO /TiO catalyst was poisoned by impregnation with NH Cl, KOH and KCl solution, respectively.The catalysts were characterized by X-ray diffraction (XRD), inductively coupled plasma (ICP), N physisorptionchloride enlarges the pore size of the titania support, and promotes the formation of highly dispersed V=Onsted acidity of catalysts and decrease the stability of Br?nsted acid sites significantly.

Keywords： V<sub>2sub>O<sub>5sub>-WO<sub>3sub>/TiO<sub>2sub>     potassium chloride     poisoning     reducibility     acid    

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Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 38-46 doi: 10.1007/s11705-011-1167-z

Abstract: An effective method for the regeneration of thermally deactivated commercial monolith SCR catalysts waseffects of temperature and the regeneration process on the structural and textural properties of the catalystsThe aggregated V O were partially re-dispersed during the regeneration process, and the intrinsic oxidationof ammonia with high concentrations of O is a factor that suppresses the catalytic activity.

Keywords： V<sub>2sub>O<sub>5sub>-WO<sub>3sub>/TiO<sub>2sub> catalysts     thermal deactivation     regeneration     NH<sub>4sub>Cl     dilute H<sub>2sub>SO<sub>4sub> solution    

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Preparation and characterization of SO42-/TiO2 and S2O82-/TiO2 catalysts

MA Xuedan, GUO Daishi, JIANG Qizhong, MA Zifeng, MA Zhengfei, YE Weidong, LI Chunbo

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 45-49 doi: 10.1007/s11705-007-0009-5

Abstract: Nanosized solid superacids SO/TiO and SO/TiO, as well as MCM-41-supported SO/ZrO, were prepared.The results showed that SO/TiO and SO/TiO possess not only nanosized particles with diameters <7.0 nmDifferent from the Lewis acid nature of SO/ZrO/MCM-41, SO/TiO and SO/TiO exhibit mainly Br¢nsted aciditiesSO/TiO even stronger than those on SO/ZrO/MCM-41 were generated when persulfate solution was used asBecause of their distinct acid natures, SO/TiO and SO/TiO exhibited catalytic activities for the cyclization

Keywords： exhibit     Different     persulfate     adsorption-desorption     catalytic    

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On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1741-1754 doi: 10.1007/s11705-023-2332-x

Abstract: Based on monolayer dispersion theory, Co<sub>3sub>O<sub>4sub>/ZSM-5 catalysts with different loadingsCo<sub>3sub>O<sub>4sub> can spontaneously disperse on HZSM-5 support with a monolayer dispersionreaction performance. 4% Co<sub>3sub>O<sub>4sub>/ZSM-5, the catalyst close to the monolayer dispersionIt is proposed the optimal Co<sub>3sub>O<sub>4sub>/ZSM-5 catalyst can be prepared by loading thecapacity amount of Co<sub>3sub>O<sub>4sub> onto HZSM-5 support.

Keywords： Co<sub>3sub>O<sub>4sub>/ZSM-5     NO<sub>xsub>-SCR by NH<sub>3sub>     monolayer dispersionthreshold effect     surface acid sites     surface active O<sub>2sub>– anions    

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Cu-doped Bi/Bi<sub>2sub>WO<sub>6sub> catalysts for efficient N<sub>2sub> fixation by photocatalysis

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1412-1422 doi: 10.1007/s11705-023-2312-1

Abstract: >2sub>WO<sub>6sub> composite.>2sub>WO<sub>6sub>.The optimized NH<sub>3sub> generation rates of Bi/Cu-Bi<sub>2sub>WO<sub>6sub> reached 624 and 243>2sub>WO<sub>6sub>, respectively.>2sub>-to-NH<sub>3sub> conversion.

Keywords： Bi<sub>2sub>WO<sub>6sub>     Cu doping     work function     photocatalytic N<sub>2sub> fixation     charge    

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Interfacial charge transfer and photocatalytic activity in a reverse designed BiO/TiO core-shell

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 732-743 doi: 10.1007/s11708-021-0772-x

Abstract: photocatalytic properties of core-shell heterojunctions photocatalysts with reversible configuration of TiO<sub>2sub> and Bi<sub>2sub>O<sub>3sub> layers were studied.The results show the formation of homogenous TiO<sub>2sub> anatase and Bi<sub>2sub>O<sub>3sub>In optimal core-shell design, Bi<sub>2sub>O<sub>3sub> collects holes from TiO<sub>2sub>, leavingelectrons free to react and increase by 5 times the photocatalytic efficiency toward H<sub>2sub> generation

Keywords： photocatalysis     core-shell     heterojunction     H<sub>2sub>     TiO<sub>2sub>     Bi<sub>2sub>O<sub>3sub    

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Characterization and performance of V

Caiting LI, Qun LI, Pei LU, Huafei CUI, Guangming ZENG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 156-161 doi: 10.1007/s11783-010-0295-x

Abstract: A series of CeO supported V O catalysts with various loadings were prepared with different calcinationThe catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammoniaThe effects of O and SO on catalytic activity were also studied.The catalysts were characterized by specific surface areas (S ) and X–ray diffraction (XRD) methods.The formation of CeVO on the surface of catalysts caused the decrease of redox ability.

Keywords： V<sub>2sub>O<sub>5sub>/CeO<sub>2sub> catalysts     NH<sub>3sub>-SCR (selective catalytic reduction    

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Preparation of lignin/TiO2 nanocomposites and their application in aqueous polyurethane coatings

Dongjie Yang, Shengyu Wang, Ruisheng Zhong, Weifeng Liu, Xueqing Qiu

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1,   Pages 59-69 doi: 10.1007/s11705-018-1712-0

Abstract: A simple method using a water soluble lignin quaternary ammonium salt (LQAS) and TiO has been developedfor the preparation of lignin/TiO nanocomposites in an aqueous medium under mild conditions.The LQAS/TiO nanocomposites contain well-dispersed small particles with excellent ultraviolet (UV) shieldingWhen the LQAS/TiO nanocomposites were blended with WPU, the UV absorbance and the tensile ductilityThe composite WPU hybrid film containing 6 wt-% LQAS/TiO nanocomposite had the highest visible light

Keywords： lignin     TiO<sub>2sub>     nanocomposite particle     polyurethane film    

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Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1363-5

Abstract:

• A V<sub>2sub>O<sub>5sub>/TiO<sub>2sub> granular catalyst for

Keywords： NO<sub>xsub>     Chlorobenzene     Simultaneous removal     Kinetic study     Performance prediction     V<sub>2sub>O<sub>5sub>/TiO<sub>2sub>     Graphical abstract    

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Highly selective catalytic hydrodeoxygenation of guaiacol to cyclohexane over Pt/TiO

Zhong HE,Xianqin WANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 369-377 doi: 10.1007/s11705-014-1435-9

Abstract: Catalysts Pt/TiO and NiMo/Al O are highly active and selective for the hydrodeoxygenation of guaiacolNiMo/Al O and Pt/Al O are more active and selective for cyclohexane formation as compared with Pt/TiOHowever, Pt/TiO is stable while the other two catalysts deactivate due to the nature and amount of coke

Keywords： Pt/TiO<sub>2sub>     NiMo/Al<sub>2sub>O<sub>3sub>     Pt/Al<sub>2sub>O<sub>3sub>     bio-oil     hydrodeoxygenation    

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Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 665-671 doi: 10.1007/s11705-019-1815-2

Abstract: A strategy of intensifying the visible light harvesting ability of anatase TiO hollow spheres (HSs)was developed, in which both sides of TiO HSs were utilised for stabilising Au nanoparticles (NPs) throughThe composite structure of single Au NP yolk-TiO shell-Au NPs, denoted as Au@Au(TiO , was rendered andAu@Au(TiO showed enhanced photocatalytic activity in the degradation of methylene blue and phenol inaqueous phase under visible light surpassing that of other reference materials such as Au(TiO by 77%

Keywords： TiO<sub>2sub> hollow spheres     plasmonic Au nanoparticles     confinement     visible light     photocatalytic degradation    

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CO<sub>2sub> methanation and co-methanation of CO and CO<sub>2sub> over Mn-promoted Ni/Al<sub>2sub>O<sub>3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2,   Pages 273-280 doi: 10.1007/s11705-016-1563-5

Abstract: A series of Mn-promoted 15 wt-% Ni/Al O catalysts were prepared by an incipient wetness impregnationThe effect of the Mn content on the activity of the Ni/Al O catalysts for CO methanation and the co-methanationThe catalysts were characterized by N physisorption, hydrogen temperature-programmed reduction and desorptionThe Mn-promoted 15 wt-% Ni/Al O catalysts had improved CO methanation activity especially at low temperaturesThe co-methanation tests on the 1.71Mn-Ni/Al O catalyst indicated that adding Mn markedly enhanced the

Keywords： Mn promotion     nickel catalysts     CO<sub>2sub> methanation     co-methanation of CO and CO<sub>2sub>    

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Effect of TiO 2 loading on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of ethylbenzene

Xiaohong LI, Wenying LI,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 142-146 doi: 10.1007/s11705-009-0233-2

Abstract: TiO-AlOmixed oxides with different compositions ranging from 40wt-% to 95wt-% of TiO were prepared bySupports and catalysts were characterized by X-ray diffraction (XRD), physisorption, temperature preprogrammedTiO content in the support had obvious effect on the crystal structure, texture characteristic, acidThe highest catalytic activity was acquired when the TiO content was 50 wt-%.

Keywords： desorption     different     TiO-AlOmixed     physisorption     ethylbenzene    

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Rh<sub>2sub>O<sub>3sub>/hexagonal CePO<sub>4sub> nanocatalysts for N<sub>2sub>O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials.The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of NO than the Rh O supported on CePO nanorods.The stability of both catalysts as a function of time on stream was studied and the influence of theco-feed (CO , O , H O or O /H O) on the N O decomposition was also investigated.

Keywords： Rh<sub>2sub>O<sub>3sub>     CePO<sub>4sub>     N<sub>2sub>O decomposition    

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Evaluation of H<sub>2sub> on the Evolution Mechanism of NO<sub>xsub> Storage and Reductionover Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> Catalysts Article

Pan Wang, Jing Yi, Chuan Sun, Peng Luo, Lili Lei

Engineering 2019, Volume 5, Issue 3,   Pages 568-575 doi: 10.1016/j.eng.2019.02.005

Abstract:

In this investigation, Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> catalysts were preparedThe physical and chemical properties of the Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub>catalysts were studied using a combination of characterization techniques, which showed that PtO<sub>xsub>, CeO<sub>2sub>, and BaCO<sub>3sub>, whose peaks were observed in X-ray diffraction(XRD) spectra, dispersed well on the γ-Al2O3, as shown by transmission electron microscope (TEM

Keywords： Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> catalysts     Physicochemical properties     NO<sub>xsub> storageand reduction     NO<sub>xsub> emission     H<sub>2sub> reductant    

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Title Author Date Type Operation

Chemical deactivation of V

Xiaodong WU, Wenchao YU, Zhichun SI, Duan WENG

Journal Article

Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Journal Article

Preparation and characterization of SO42-/TiO2 and S2O82-/TiO2 catalysts

MA Xuedan, GUO Daishi, JIANG Qizhong, MA Zifeng, MA Zhengfei, YE Weidong, LI Chunbo

Journal Article

On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

Journal Article

Cu-doped Bi/Bi<sub>2sub>WO<sub>6sub> catalysts for efficient N<sub>2sub> fixation by photocatalysis

Journal Article

Interfacial charge transfer and photocatalytic activity in a reverse designed BiO/TiO core-shell

Journal Article

Characterization and performance of V

Caiting LI, Qun LI, Pei LU, Huafei CUI, Guangming ZENG

Journal Article

Preparation of lignin/TiO2 nanocomposites and their application in aqueous polyurethane coatings

Dongjie Yang, Shengyu Wang, Ruisheng Zhong, Weifeng Liu, Xueqing Qiu

Journal Article

Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance

Journal Article

Highly selective catalytic hydrodeoxygenation of guaiacol to cyclohexane over Pt/TiO

Zhong HE,Xianqin WANG

Journal Article

Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Journal Article

CO<sub>2sub> methanation and co-methanation of CO and CO<sub>2sub> over Mn-promoted Ni/Al<sub>2sub>O<sub>3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Journal Article

Effect of TiO 2 loading on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of ethylbenzene

Xiaohong LI, Wenying LI,

Journal Article

Rh<sub>2sub>O<sub>3sub>/hexagonal CePO<sub>4sub> nanocatalysts for N<sub>2sub>O decomposition

Huan Liu, Zhen Ma

Journal Article

Evaluation of H<sub>2sub> on the Evolution Mechanism of NO<sub>xsub> Storage and Reductionover Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> Catalysts

Pan Wang, Jing Yi, Chuan Sun, Peng Luo, Lili Lei

Journal Article