Effect of surface oxidation on the surface condition and deuterium permeability of a palladium membrane

Feng, Wei; Liu, Ying; Lian, Lixian; Peng, Lixia; Li, Jun

doi:10.1016/j.apsusc.2011.06.047

Cited by 3 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carbon and other impurities will greatly influence the hydrogen isotopic exchange over Pd. 17 Thus, fabrication of porous Pd without further contamination is a challenge. The XRD pattern (Fig.…”

Section: Resultsmentioning

confidence: 99%

Characterisation and compressive properties of highly porous palladium materials fabricated by spark plasma sintering with silicon as spacer

et al. 2013

View full text Add to dashboard Cite

In the present study, highly porous bulk Pd has been prepared by spark plasma sintering using silicon as a spacer material. The effects of the Si contents and sintering temperatures on the resultant porous materials were studied. It has been found that the porosity of porous Pd can be controlled by varying the content of Si, and their maximum porosity values reached 90%. The sintering temperature of 550uC and holding time of 5 min would be used to sinter porous bulk Pd with well developed necks. Meanwhile, the compressive properties of porous bulk Pd were also investigated.

show abstract

Section: Resultsmentioning

confidence: 99%

Characterisation and compressive properties of highly porous palladium materials fabricated by spark plasma sintering with silicon as spacer

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Then the reduction reaction was conducted in the 23 °C using hydrogen (H2) with a reacting duration of 5 min [31]. Figures 3f and 1g show that all the characteristic sulfide diffraction peaks disappeared completely and the PdO characteristic diffraction peak appeared on the surface of Pd membrane that reacted with hydrogen sulfide at 450 °C and then was oxidized at 500 °C.…”

Section: The Effect Of Redox Reaction On the Pd Membrane Surface Affementioning

confidence: 99%

“…The chemical state of the sample surface was analyzed using an X-ray photoelectron spectrometer with EX05 ion sputtering gun (Model 250, ESCALAB, Thermo Fisher, Hillsboro, OR, USA). The hydrogen permeability after the sample surface was treated was evaluated by the hydrogen penetration rate testing device made by China Academy of Engineering Physics (CAEP, MianYang, China) [31]. Figure 2 shows the hydrogen permeation experimental apparatus.…”

Section: Characterizationmentioning

confidence: 99%

“…Finally it was dried in the vacuum with ambient temperature. The surface reaction experiments were undertaken in a quartz pipe device [31], which could be filled with one of flowing gases of Ar, H2S, O2 and H2(99.999%, purity, Chengdu Taiyu Gas Co. Ltd., Chengdu, China). In fact, these gases were added successively according to the experimental requirements.…”

Section: Experimental Processmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Hydrogen Sulfide and Redox Reactions on the Surface Properties and Hydrogen Permeability of Pd Membranes

et al. 2018

Self Cite

View full text Add to dashboard Cite

Although hydrogen sulfide (H 2 S) was always a negative factor leading to the reduction of hydrogen permeability of palladium (Pd) membranes, its proper application could result in a positive effect. In this study, pure Pd membranes were firstly reacted with H 2 S at 23-450 • C, and then treated by redox reactions. Afterwards, the hydrogen permeability was tested under different reaction conditions using a hydrogen penetrant testing device. Moreover, both products and morphology changes occurred on the Pd membrane surface were analyzed using XRD, XPS and SEM. The results showed that H 2 S was dissociated to produce sulfides at 23 • C. With a rise of temperature, a regular change took place in the reaction products, morphology of the Pd membrane surface and hydrogen permeability. Adsorbed impurities such as sulfides and free carbon on the Pd membrane surface were removed by the redox treatment. The hydrogen permeability was improved by about 80% for the Pd membrane material subjected to the treatment method stated the above against the untreated one.

show abstract

Neural network enabled nanoplasmonic hydrogen sensors with 100 ppm limit of detection in humid air

Tomeček,

Moberg,

Nilsson

et al. 2024

Nat Commun

View full text Add to dashboard Cite

Environmental humidity variations are ubiquitous and high humidity characterizes fuel cell and electrolyzer operation conditions. Since hydrogen-air mixtures are highly flammable, humidity tolerant H2 sensors are important from safety and process monitoring perspectives. Here, we report an optical nanoplasmonic hydrogen sensor operated at elevated temperature that combined with Deep Dense Neural Network or Transformer data treatment involving the entire spectral response of the sensor enables a 100 ppm H2 limit of detection in synthetic air at 80% relative humidity. This significantly exceeds the <1000 ppm US Department of Energy performance target. Furthermore, the sensors pass the ISO 26142:2010 stability requirement in 80% relative humidity in air down to 0.06% H2 and show no signs of performance loss after 140 h continuous operation. Our results thus demonstrate the potential of plasmonic hydrogen sensors for use in high humidity and how neural-network-based data treatment can significantly boost their performance.

show abstract

Effect of surface oxidation on the surface condition and deuterium permeability of a palladium membrane

Cited by 3 publications

References 19 publications

Characterisation and compressive properties of highly porous palladium materials fabricated by spark plasma sintering with silicon as spacer

Characterisation and compressive properties of highly porous palladium materials fabricated by spark plasma sintering with silicon as spacer

Influence of Hydrogen Sulfide and Redox Reactions on the Surface Properties and Hydrogen Permeability of Pd Membranes

Neural network enabled nanoplasmonic hydrogen sensors with 100 ppm limit of detection in humid air

Contact Info

Product

Resources

About