Symbiotic CeH 2.73 /CeO 2 catalyst: A novel hydrogen pump

Lin, Huaijun; Tang, Jia-Jun; Yu, Qian; Wang, Hui; Ouyang, Liuzhang; Zhao, Yu-Jun; Liu, Jiangwen; Wang, Weihua; Zhu, Min

doi:10.1016/j.nanoen.2014.06.026

Cited by 165 publications

(49 citation statements)

References 37 publications

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“…Therefore, it is concluded that the catalysis of YH 2 / Y 2 O 3 composite is responsible for the significant kinetic improvement of MgH 2 . Similar catalytic behavior was also found in the CeH 2.73 /CeO 2 catalyst with core-shell like nanostructure, which was in-situ formed from the melt-spun Mg-Ce-Ni amorphous alloy by controllable hydrogenation and oxidization [21]. For the CeH 2.73 /CeO 2 catalyzed MgH 2 , the hydrogen desorption temperature is reduced down to 210°C, a notable reduction by 80°C than that of the CeH 2.73 catalyzed MgH 2 .…”

Section: Resultssupporting

confidence: 68%

Enhanced joint catalysis of YH2/Y2O3 on dehydrogenation of MgH2

Wang

Han

et al. 2015

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 68%

Enhanced joint catalysis of YH2/Y2O3 on dehydrogenation of MgH2

Wang

Han

et al. 2015

Journal of Alloys and Compounds

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“…Ceria could uptake small amounts of hydrogen below 391 • C [39]. Even more, Lin et al [39] [40][41][42][43][44]. In the present work, CeO 2 demonstrated its effectiveness reducing the dehydrogenation temperature.…”

Section: Discussionsupporting

confidence: 53%

“…However, few examples have been published. Ceria could uptake small amounts of hydrogen below 391 • C [39]. Even more, Lin et al [39] [40][41][42][43][44].…”

Section: Discussionmentioning

confidence: 99%

Dehydrogenation of Surface-Oxidized Mixtures of 2LiBH4 + Al/Additives (TiF3 or CeO2)

2017

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Abstract:Research for suitable hydrogen storage materials is an important ongoing subject. LiBH 4 -Al mixtures could be attractive; however, several issues must be solved. Here, the dehydrogenation reactions of surface-oxidized 2LiBH 4 + Al mixtures plus an additive (TiF 3 or CeO 2 ) at two different pressures are presented. The mixtures were produced by mechanical milling and handled under welding-grade argon. The dehydrogenation reactions were studied by means of temperature programmed desorption (TPD) at 400 • C and at 3 or 5 bar initial hydrogen pressure. The milled and dehydrogenated materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transformed infrared spectroscopy (FT-IR) The additives and the surface oxidation, promoted by the impurities in the welding-grade argon, induced a reduction in the dehydrogenation temperature and an increase in the reaction kinetics, as compared to pure (reported) LiBH 4 . The dehydrogenation reactions were observed to take place in two main steps, with onsets at 100 • C and 200-300 • C. The maximum released hydrogen was 9.3 wt % in the 2LiBH 4 + Al/TiF 3 material, and 7.9 wt % in the 2LiBH 4 + Al/CeO 2 material. Formation of CeB 6 after dehydrogenation of 2LiBH 4 + Al/CeO 2 was confirmed.

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“…With the help of Van't Hoff equation (4) [1,57,58] as following and the plateau pressures, Van't Hoff plots as Fig. 7(b) for modified Mg10Ni alloys are obtained.…”

Section: Thermodynamics Of Hydrogen Absorption/desorptionmentioning

confidence: 99%

“…For practical applications, Mg and its alloys have meet the capacity index proposed by the US department of energy (DOE) for future on-board hydrogen storage materials. However, the notoriously slow hydrogen sorption kinetics and unacceptably high thermodynamics prevent them from numerous practical applications [4,5].…”

Section: Introductionmentioning

confidence: 99%