A simplified method for the synthesis of ceric alkoxides from ceric ammonium nitrate

Gradeff, Peter S.; Schreiber, Fred G.; Brooks, Kenneth C.; Sievers, Robert E.

doi:10.1021/ic00201a033

Cited by 49 publications

(42 citation statements)

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“…Cerium(IV) tetra-n-decyloxide (Ce(OC 10 H 21 ) 4 ), an important precursor for preparation of mesoporous CeO 2 ,w as synthesized by ao ne-step method with CAN as as tarting material. [32] The Ni (100Àx) -Pt x /CeO 2 catalysts (x = 0, 5, 10, 30, 40, 50, 80, 100) with varied alloy compositions but fixed metal(s)/support molar ratio of 1/2 were prepared by aone-pot EISA method. In atypical synthesis procedure, 1.60 go fP luronic P123 surfactant and 2.0 mmol of Ni(NO 3 ) 2 /H 2 PtCl 6 mixture with designated stoichiometric ratio were dissolved in 32 mL of ethanol at 40 8C, then 2.6 mL of HNO 3 and 4mmol Ce(OC 10 H 21 ) 4 were added to the solution.…”

Section: Methodsmentioning

confidence: 99%

Complete and Rapid Conversion of Hydrazine Monohydrate to Hydrogen over Supported Ni–Pt Nanoparticles on Mesoporous Ceria for Chemical Hydrogen Storage

Jiang

Dai

Zhong

et al. 2015

Chemistry A European J

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The development of active, selective, and robust catalysts is a key issue in promoting the practical application of hydrazine monohydrate (N2 H4 ⋅H2 O) as a viable hydrogen carrier. Herein, the synthesis of a supported Ni-Pt bimetallic nanocatalyst on mesoporous ceria by a one-pot evaporation-induced self-assembly method is reported. The catalyst exhibits exceptionally high catalytic activity, 100 % selectivity, and satisfactory stability in promoting H2 generation from an alkaline solution of N2 H4 ⋅H2 O at moderate temperatures. For example, the Ni60 Pt40 /CeO2 catalyst enabled complete decomposition of N2 H4 ⋅H2 O to generate H2 at a rate of 293 h(-1) at 30 °C in the presence of 2 M NaOH, which compares favorably with the reported N2 H4 ⋅H2 O decomposition catalysts. Phase/structural analysis by XRD, TEM, and Auger electron spectroscopy was conducted to gain insight into the excellent catalytic performance of the Ni-Pt/CeO2 catalyst.

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Section: Methodsmentioning

confidence: 99%

Complete and Rapid Conversion of Hydrazine Monohydrate to Hydrogen over Supported Ni–Pt Nanoparticles on Mesoporous Ceria for Chemical Hydrogen Storage

Jiang

Dai

Zhong

et al. 2015

Chemistry A European J

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“…Cerium tert- butoxide (CeB) was synthesized from (NH 4 ) 2 [Ce(NO 3 ) 6 ] and sodium tert- butoxide in 1,2-dimethoxyethane (DME) according to literature procedures. [20, 21] The oily residue obtained after removal of the solvent was used directly for sol–gel processing without further purification. All solid chemicals were dried at <10 −3 mbar for at least 5 h to remove H 2 O.…”

Section: Methodsmentioning

confidence: 99%

Different Synthesis Protocols for Co₃O₄–CeO₂ Catalysts—Part 1: Influence on the Morphology on the Nanoscale

Yang

Lukashuk

Akbarzadeh

et al. 2014

Chemistry A European J

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Co3O4-modified CeO2 (Co/Ce 1:4) was prepared by a combination of sol–gel processing and solvothermal treatment. The distribution of Co was controlled by means of the synthesis protocol to yield three different morphologies, namely, Co3O4 nanoparticles located on the surface of CeO2 particles, coexistent Co3O4 and CeO2 nanoparticles, or Co oxide structures homogeneously distributed within CeO2. The effect of the different morphologies on the properties of Co3O4–CeO2 was investigated with regard to the crystallite phase(s), particle size, surface area, and catalytic activity for CO oxidation. The material with Co3O4 nanoparticles finely dispersed on the surface of CeO2 particles had the highest catalytic activity.

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“…The latter was prepared according to literature procedures. [70] After soaking of the Al 2 O 3 spheres, the solvent was removed by evaporation at reduced pressure and the resulting material was dried at 120 8C overnight and calcined in static air at 700 8C for 5 h. The amounts of La 2 O 3 and CeO 2 were optimized in order to introduce the maximum quantity of the dopant oxide without significant variations of the support surface area (see Table 2). Pt (3 wt %) was loaded on the bare or modified Al 2 O 3 spheres by impregnation using an aqueous solution of Pt(NO 3 ) 2 .…”

Section: Methodsmentioning

confidence: 99%

Renewable H₂ from Glycerol Steam Reforming: Effect of La₂O₃ and CeO₂ Addition to Pt/Al₂O₃ catalysts.

et al. 2010

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Glycerol is the main byproduct of biodiesel production and its increased production volume derives from the increasing demand for biofuels. The conversion of glycerol to hydrogen-rich mixtures presents an attractive route towards sustainable biodiesel production. Here we explored the use of Pt/Al(2)O(3)-based catalysts for the catalytic steam reforming of glycerol, evidencing the influence of La(2)O(3) and CeO(2) doping on the catalyst activity and selectivity. The addition of the latter metal oxides to a Pt/Al(2)O(3) catalyst is found to significantly improve the glycerol steam reforming, with high H(2) and CO(2) selectivities. A good catalytic stability is achieved for the Pt/La(2)O(3)/Al(2)O(3) system working at 350 degrees C, while the Pt/CeO(2)/Al(2)O(3) catalyst sharply deactivates after 20 h under similar conditions. Studies carried out on fresh and exhausted catalysts reveal that both systems maintain high surface areas and high Pt dispersions. Therefore, the observed catalyst deactivation can be attributed to coke deposition on the active sites throughout the catalytic process and only marginally to Pt nanoparticle sintering. This work suggests that an appropriate support composition is mandatory for preparing high-performance Pt-based catalysts for the sustainable conversion of glycerol into syngas.

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A simplified method for the synthesis of ceric alkoxides from ceric ammonium nitrate

Cited by 49 publications

References 1 publication

Complete and Rapid Conversion of Hydrazine Monohydrate to Hydrogen over Supported Ni–Pt Nanoparticles on Mesoporous Ceria for Chemical Hydrogen Storage

Complete and Rapid Conversion of Hydrazine Monohydrate to Hydrogen over Supported Ni–Pt Nanoparticles on Mesoporous Ceria for Chemical Hydrogen Storage

Different Synthesis Protocols for Co₃O₄–CeO₂ Catalysts—Part 1: Influence on the Morphology on the Nanoscale

Renewable H₂ from Glycerol Steam Reforming: Effect of La₂O₃ and CeO₂ Addition to Pt/Al₂O₃ catalysts.

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A simplified method for the synthesis of ceric alkoxides from ceric ammonium nitrate

Cited by 49 publications

References 1 publication

Complete and Rapid Conversion of Hydrazine Monohydrate to Hydrogen over Supported Ni–Pt Nanoparticles on Mesoporous Ceria for Chemical Hydrogen Storage

Complete and Rapid Conversion of Hydrazine Monohydrate to Hydrogen over Supported Ni–Pt Nanoparticles on Mesoporous Ceria for Chemical Hydrogen Storage

Different Synthesis Protocols for Co3O4–CeO2 Catalysts—Part 1: Influence on the Morphology on the Nanoscale

Renewable H2 from Glycerol Steam Reforming: Effect of La2O3 and CeO2 Addition to Pt/Al2O3 catalysts.

Contact Info

Product

Resources

About

Different Synthesis Protocols for Co₃O₄–CeO₂ Catalysts—Part 1: Influence on the Morphology on the Nanoscale

Renewable H₂ from Glycerol Steam Reforming: Effect of La₂O₃ and CeO₂ Addition to Pt/Al₂O₃ catalysts.