Single-step synthesized dual-layer hollow fiber membrane reactor for on-site hydrogen production through ammonia decomposition

Cheng, Hongda; Meng, Bo; Li, Claudia; Wang, Xiaobin; Meng, Xiuxia; Sunarso, Jaka; Tan, Xiaoyao; Liu, Shaomin

doi:10.1016/j.ijhydene.2019.04.101

Cited by 32 publications

(17 citation statements)

References 41 publications

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“…Other types of membranes used are silica or materials composed of Nd, Mo, and W . Li et al tested a catalytic membrane reactor loaded with Ru/γ-Al 2 O 3 /α-Al 2 O 3 and a hydrogen-selective silica membrane (Figure ).…”

Section: Catalysts For the Thermal Decomposition Of Ammoniamentioning

confidence: 99%

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Review of the Decomposition of Ammonia to Generate Hydrogen

Lucentini

Garcia

Vendrell

et al. 2021

Ind. Eng. Chem. Res.

241

193

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Because of the problems associated with the generation and storage of hydrogen in portable applications, the use of ammonia has been proposed for on-site production of hydrogen through ammonia decomposition. First, an analysis of the existing systems for ammonia decomposition and the challenges for this technology are presented. Then, the state of the art of the catalysts used to date for ammonia decomposition is described considering the catalysts composed of noble and non-noble metals and their combinations, as well as novel materials such as alkali metal amides and imides. The effect of the supports and promoters used is analyzed in detail, and the catalytic activity obtained is compared. An analysis of the kinetics of the reaction obtained with different catalysts is also presented and discussed, including the reaction mechanism, the determining step of the reaction, and the apparent activation energy. Finally, the structured reactors used to date for the decomposition reaction of ammonia are explored, as well as the possibilities offered by catalytic membrane reactors, which allow the on-site simultaneous production and separation of hydrogen.

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Section: Catalysts For the Thermal Decomposition Of Ammoniamentioning

confidence: 99%

“…Using a different approach, Cheng et al used a double layered membrane Nd 5.5 Mo 0.5 W 0.5 O 11.25‑δ /Nd 5.5 Mo 0.5 W 0.5 O 11.25‑δ -Ni that maintained a very high NH 3 conversion and H 2 permeation flux, stable during a continuous test of 75 h at 750 °C.…”

Section: Catalysts For the Thermal Decomposition Of Ammoniamentioning

confidence: 99%

Review of the Decomposition of Ammonia to Generate Hydrogen

Lucentini

Garcia

Vendrell

et al. 2021

Ind. Eng. Chem. Res.

241

193

View full text Add to dashboard Cite

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“…Due to the high production cost of high purity hydrogen [2] and low volume energy density [3], the large-scale application of PEMFC is limited. Therefore, how to obtain hydrogen sources with high volume energy density and easy access on site is the primary problem for realizing the large-scale application of fuel cells [4][5][6]. Current potential solutions include hydrocarbon fuel reforming for hydrogen production, metal hydrogen storage, liquid organic hydrogen storage and inorganic compound hydrogen storage.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation study of PEMFC based on ammonia decomposition gas as fuel

Zhao

Liang

et al. 2022

J. Electrochem. Sci. Technol

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Compared with hydrogen, ammonia has the advantages of high gravimetric hydrogen densities (17.8 wt.%), ease of storage and transportation as a chemical hydrogen storage medium, while its application in small-scale on-site hydrogen production scenarios is limited by the need for complex separation equipment during high purity hydrogen production. Therefore, the study of PEMFC, which can directly utilize ammonia decomposition gas, can greatly expand the application of fuel cells. In this paper, the output characteristics, fuel efficiency and the variation trend of hydrogen concentration and local current density in the anode channel of fuel cell with the output voltage of PEMFC fueled by ammonia decomposition gas were studied by experiment and simulation. The results indicate that the maximum output power of the hybrid fuel decreases by 9.6% compared with that of the pure hydrogen fuel at the same inlet hydrogen equivalent. When the molar concentration of hydrogen in the anode channel is less than 0.12, the output characteristics of PEMFC will be seriously affected. Employing ammonia decomposition gas as fuel, the efficiency corresponding to the maximum output power of PEMFC is approximately 47%, which is 10% lower than the maximum efficiency of pure hydrogen.

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“…Although the hydrogen flux of most ceramic proton‐conducting membranes is lower than the hydrogen flux of Pd‐based membranes, its high‐temperature application and high‐purity hydrogen production capacity have received extensive attention 19–21 . Currently, there is a need to improve its permeation flux 22–24 …”

Section: Introductionmentioning

confidence: 99%

“…[19][20][21] Currently, there is a need to improve its permeation flux. [22][23][24] Hollow fiber membranes have garnered attention owing to their unique asymmetric structures [25][26][27] and a suitable configuration for improving the permeation flux. Compared with conventional planar or tubular configurations, hollow fiber membranes have a much greater packing density and thin dense separation layer (usually less than 100 μm).…”

mentioning

confidence: 99%

One‐step thermal processing of BaCe₀_.₈Y₀_.₂O₃_−δ hydrogen permeable multichannel hollow fiber membrane

et al. 2022

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BaCe0.8Y0.2O3−δ (BCY) is the most widely studied proton‐conducting material and is frequently fabricated as a dense membrane for hydrogen separation. However, the limitation of preparing dense BCY membranes is the extremely high sintering temperature (>1500°C). Herein, the BCY 7‐channel hollow fiber membrane was prepared by a one‐step thermal processing (OSTP) with Co2O3 as a sintering aid. The results showed that the addition of 1 wt.% Co2O3 at a reduced temperature of 1350°C was the optimum composition and sintering condition for densification and forming a single perovskite‐phase structure. The hydrogen permeation flux of the BCY hollow fiber membrane reached up to 0.34 ml min−1 cm−2 at 900°C. The long‐term stability test was conducted for 300 h. The successful attempt of such a strategy provides a green and straightforward path for the preparation of dense ceramic proton‐conducting membranes on a large scale. This promotes its industrial application in high‐temperature hydrogen separation.

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Single-step synthesized dual-layer hollow fiber membrane reactor for on-site hydrogen production through ammonia decomposition

Cited by 32 publications

References 41 publications

Review of the Decomposition of Ammonia to Generate Hydrogen

Review of the Decomposition of Ammonia to Generate Hydrogen

Experimental and simulation study of PEMFC based on ammonia decomposition gas as fuel

One‐step thermal processing of BaCe₀_.₈Y₀_.₂O₃_−δ hydrogen permeable multichannel hollow fiber membrane

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Single-step synthesized dual-layer hollow fiber membrane reactor for on-site hydrogen production through ammonia decomposition

Cited by 32 publications

References 41 publications

Review of the Decomposition of Ammonia to Generate Hydrogen

Review of the Decomposition of Ammonia to Generate Hydrogen

Experimental and simulation study of PEMFC based on ammonia decomposition gas as fuel

One‐step thermal processing of BaCe0.8Y0.2O3−δ hydrogen permeable multichannel hollow fiber membrane

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Product

Resources

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One‐step thermal processing of BaCe₀_.₈Y₀_.₂O₃_−δ hydrogen permeable multichannel hollow fiber membrane