Amine–mixed oxide hybrid materials for carbon dioxide adsorption from CO<sub>2</sub>/H<sub>2</sub> mixture

Ravi, Navin; Anuar, Siti Aishah; Yusuf, Nur Yusra Mt; Isahak, Wan Nor Roslam Wan; Masdar, Mohd Shahbudin

doi:10.1088/2053-1591/aabf68

Cited by 15 publications

(7 citation statements)

References 22 publications

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“…Olefins can be produced from natural gas polymerization, steam cracking, or dehydrogenation of hydrocarbon. Previous works on CO 2 conversion into hydrocarbons have been reported in previous works . The combination of more than one active sites on the heterogeneous catalyst responsible for different functionalities contributes to the C2‐C4 formation at a moderate temperature of approximately 300°C.…”

Section: Hydrogenation Mechanismmentioning

confidence: 99%

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review

et al. 2019

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Summary Hydrogen becomes one of the most clean energy sources. The major issues on hydrogen are lack of practical clean and high‐temperature processes and possible practical storage of clean hydrogen. An energy intensive of clean hydrogen storage via chemical and liquid fuel production route is the current demand. This article reviewed the most recent research for hydrogen (H2) production by using several methods, such as thermochemical process, thermal decomposition, biological approaches, electrolysis, and photocatalytic method. H2 storage types, including physical and chemical approaches, were also reviewed. The produced H2 was stored as valuable chemicals and fuels via CO2 hydrogenation reaction. Reactor designs are the illustrated number of design ranging from the fixed bed to the continuous stirred tank reactor. Catalyst type, catalytic system, and the related mechanism of CO2 hydrogenation reaction to form alcohol, alkanes, and carboxylic acid were also discussed in detail.

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Section: Hydrogenation Mechanismmentioning

confidence: 99%

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review

et al. 2019

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“…The adsorption microcalorimetric study suggests a change in active site distribution as the amine density increases. Ravi et al [10] studied amine-oxide mixed materials for CO 2 separation from the bio-hydrogen model. BET analysis confirmed that due to the low surface area of the adsorbent system, the high amine load contributed to the reduction in CO 2 adsorption.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Renewable Porous Carbon Dioxide Adsorbent Materials for Space Shuttles

Zhang

Wang²,

Liu³

et al. 2022

Energies

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Porous adsorbent material is promising to be used to regeneratively remove CO2 from space shuttles. In this work, the amount and isosteric heat of CO2 adsorption in solid amine are experimentally studied at pressures ranging from 0 to 6 bar and temperatures ranging from 20 °C to 60 °C. The amount and isosteric heat of water adsorption in the solid amine is tested at different humidities (relative humidity 30–80%). The effective thermal conductivity of the solid amine at different atmospheres (air, N2, CO2 and water), pressures and temperatures is also investigated. The results show that the best temperature for CO2 adsorption in the solid amine is 45 °C under dry conditions. The amount of water adsorption increases with enhanced humidity, while the isosteric heat of water adsorption remains a constant value. The effective thermal conductivity of the solid amine increases with an increase in pressure. The adsorbed phase (CO2 and water) in the solid amine makes a contribution to improving the effective thermal conductivity of solid amine particles. The above findings can help design a better adsorption system in space.

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“…To date, raw biohydrogen gas typically consists of H 2 -CO 2 mixture with a CO 2 ratio of 40-50 %. Therefore, the collected gas must first be purified by removing CO 2 by using either solid, liquid, or membrane adsorbents [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of Carbon Nitride-ZnO Hybrid Adsorbent for CO2 Capture: The Significant Role of Amine Source to Metal Oxide Ratio

et al. 2021

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The presence of CO2 in gaseous fuel and feedstock stream of chemical reaction was always considered undesirable. High CO2 content will decrease quality and heating value of gaseous fuel, such as biohydrogen, which needs a practical approach to remove it. Thus, this work aims to introduce the first C3N4-metal oxide hybrid for the CO2 cleaning application from a mixture of CO2-H2 gas. The samples were tested for their chemical and physical properties, using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), physical adsorption analysis (BET), fourier-transform infrared (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The CO2 capacity test was carried out by means of a breakthrough test at 1 atm and 25° C using air as a desorption system. Among the samples, amine/metal oxide mass ratio of 2:1 (CNHP500-2(2-1)) showed the best performance of 26.9 wt. % (6.11 mmol/g), with a stable capacity over 6 consecutive cycles. The hybrid sample also showed 3 times better performance than the raw C3N4. In addition, it was observed that the hydrothermal C3N4 synthesis method demonstrated improved chemical properties and adsorption performance than the conventional dry pyrolysis method. In summary, the performance of hybrid samples depends on the different interactive factors of surface area, pore size and distribution, basicity, concentration of amine precursors, ratio of amines precursors to metal oxide, and framework stability.

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Amine–mixed oxide hybrid materials for carbon dioxide adsorption from CO₂/H₂ mixture

Cited by 15 publications

References 22 publications

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review

Experimental Study on Renewable Porous Carbon Dioxide Adsorbent Materials for Space Shuttles

Facile Preparation of Carbon Nitride-ZnO Hybrid Adsorbent for CO2 Capture: The Significant Role of Amine Source to Metal Oxide Ratio

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Amine–mixed oxide hybrid materials for carbon dioxide adsorption from CO2/H2 mixture

Cited by 15 publications

References 22 publications

Clean hydrogen generation and storage strategies via CO 2 utilization into chemicals and fuels: A review

Clean hydrogen generation and storage strategies via CO 2 utilization into chemicals and fuels: A review

Experimental Study on Renewable Porous Carbon Dioxide Adsorbent Materials for Space Shuttles

Facile Preparation of Carbon Nitride-ZnO Hybrid Adsorbent for CO2 Capture: The Significant Role of Amine Source to Metal Oxide Ratio

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Product

Resources

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Amine–mixed oxide hybrid materials for carbon dioxide adsorption from CO₂/H₂ mixture

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review