Fabrication and Characterization of CeO2-NiO/SiC Membranes for Hydrogen Permeation

2014 ◽  
Vol 353 ◽  
pp. 143-147 ◽  
Author(s):  
Ji Hye Park ◽  
Mie Won Jung
Keyword(s):  
Mixed Oxides ◽  
Hydrogen Permeation ◽  
Sol Gel ◽  
Hot Press ◽  
Reaction Enthalpy ◽  
Sol Gel Process ◽  
Fabrication And Characterization ◽  
Hot Press Sintering ◽  
Permeation Test

In order to enhance the hydrogen permeation, Silicon carbide (SiC) was prepared with CeO2-NiO mixed oxides via sol-gel process and the SiC membranes with various contents of χ wt% mixed oxides (χ = 20, 40, 60 and 80) were fabricated by hot-press sintering (HPS) at 1173 K under vacuum condition. The effect of the CeO2-NiO mixed oxides was studied in terms of properties on hydrogen permeation. All the membranes were characterized by XRD, FE-SEM and BET instrument. The hydrogen permeation test was carried out at various temperatures under 0.1 MPa. Hydrogen permeation flux of the 80 wt% CeO2-NiO/SiC membrane, which has the highest value, was obtained at 2.92×10-6mol/m2sPa, 323 K. The reaction enthalpy (ΔH°) was calculated as - 4.95 J/mol by Arrhenius’s plot.

Preparation and Hydrogen Permeation on Al2O3-CuO-ZnO (ACZ)/Co Membrane by Hot Press Sintering (HPS)

2011 ◽  
Vol 695 ◽  
pp. 251-254 ◽  
Author(s):  
Saet Byol Rim ◽  
Kyeong Il Kim ◽  
Tae Whan Hong ◽  
Mie Won Jung
Keyword(s):  
Room Temperature ◽  
Hydrogen Permeation ◽  
Sol Gel ◽  
Hydrogen Permeability ◽  
Permeation Rate ◽  
Nitrate Hexahydrate ◽  
Distilled Water ◽  
Hot Press ◽  
Sol Gel Process ◽  
Hot Press Sintering

The Al2O3-CuO-ZnO (ACZ) was synthesized from sol-gel process with aluminum isopropoxide, copper (II) nitrate hemi pentahydrate, Zn (II) nitrate hexahydrate and primary distilled water. The ACZ synthesized powders were analyzed by TG/DTA, XRD, BET and FE-SEM. The ACZ-Co composites membrane was prepared by hot press sintering (HPS). Hydrogen permeability was characterized by Sievert's type hydrogen permeation membrane equipment. The hydrogen permeation rate was measured 0.0496 mol m-2 s-1 at room temperature under 2 bar of H2 atmosphere.

Hydrogen Permeability of NiO-Doped Alumina with Nickel Composites Membrane

2012 ◽  
Vol 724 ◽  
pp. 213-216 ◽  
Author(s):  
Bo Young Shon ◽  
Mie Won Jung
Keyword(s):  
Hydrogen Permeation ◽  
Thermal Evolution ◽  
Sol Gel ◽  
Hydrogen Permeability ◽  
Organic Additive ◽  
Hot Press ◽  
Sol Gel Process ◽  
Increase Surface Area ◽  
Nickel Composites ◽  
Hot Press Sintering

NiO-doped Al2O3was synthesized with 20 wt% of nickel nitrate using the sol-gel process. P123 as an organic additive added to increase surface area of powder. The phase transformation, thermal evolution and surface morphology of the powder were characterized by XRD, TG-DTA and FE-SEM. The 20 wt% NiO-doped Al2O3/10 wt% Ni composite membrane was prepared by hot press sintering (HPS) following with a mechanical alloying process. Hydrogen permeation flux for 20 wt% NiO-doped Al2O3/10 wt% Ni membrane was obtained as 0.1 mol/m2s at 673K.

Fabrication and Characterization of Ferrocene-Derived Sensor for Hydrogen Peroxide Detection

2014 ◽  
Vol 1073-1076 ◽  
pp. 597-600
Author(s):  
Qi Dan Chen ◽  
Ting Xia ◽  
Fei Wu ◽  
Xiao Dan Lv
Keyword(s):  
Hydrogen Peroxide ◽  
Sol Gel ◽  
Polyelectrolyte Multilayer ◽  
Hydrogen Peroxide Detection ◽  
Sol Gel Process ◽  
Oxidation Properties ◽  
Fabrication And Characterization ◽  
Electrochemical Monitoring ◽  
Electrical Activities

Ferrocene (Fc) is an organometallic compound of sandwich structure. As the anticancer and excellent electrical activities, ferrocene and its derivatives have many applications in electrochemical monitoring [1-3]. Hydrogen peroxide (HP), with strong permeability and oxidation properties, is the product of many peroxidase catalyzed reaction, and it is widely used in medical and cosmetic fields, even for food bleaching by some illegal merchants which may cause healthy problem. In this study, the polyelectrolyte multilayer films containing ferrocene-derived polymer assembling by sol-gel process [4] was introduced to HP determination as a sensor.

Continuous sol–gel derived SiOC/HfO2 fibers with high strength

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 35026-35032 ◽  
Author(s):  
Yao Xu ◽  
Dong Su ◽  
Hongjun Feng ◽  
Xiao Yan ◽  
Ning Liu ◽  
...  
Keyword(s):  
Sol Gel ◽  
High Strength ◽  
Sol Gel Process ◽  
Fabrication And Characterization

This study presents the fabrication and characterization of continuous SiOC/HfO2 fibers with high strength by the sol–gel process.

Synthesis and characterization of SiO2–CrO3, SiO2–MoO3, and SiO2–WO3 mixed oxides produced using the non-hydrolytic sol–gel process

2013 ◽  
Vol 69 (1) ◽  
pp. 72-84 ◽  
Author(s):  
Arthur A. Bernardes ◽  
Claudio Radtke ◽  
Maria do Carmo M. Alves ◽  
Ione M. Baibich ◽  
Márcia Lucchese ◽  
...  
Keyword(s):  
Mixed Oxides ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Sol Gel Process
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