Carbon capture with polyethylenimine hydrogel beads (PEI HBs)

Xu, Xingguang; Pejcic, Bobby; Heath, Charles; Wood, Colin D.

doi:10.1039/c8ta07760f

Cited by 47 publications

(40 citation statements)

References 28 publications

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“…These experiments are frequently carried out under atmospheric pressure by thermogravimetric analysis (TGA), or a custom-built system in which the sample is weighed before and after exposure to CO 2 . Examples include the CO 2filled balloon set-up used by Xu et al, 27 or the U-shaped glass tube gas delivery system used by Chen and co-workers. 28 In volumetric analysis, the sample is placed in a cell and CO 2 is introduced at certain increasing partial pressures, with corresponding pressure loss in the cell interpreted as CO 2 uptake by the adsorbent, Fig.…”

Section: Co 2 Adsorption Analysis Methods and Conditionsmentioning

confidence: 99%

“…115 Epichlorohydrin, used to cross-link PEI supported on glass fibres in 2008, 92 was employed in 2018 by Xu and co-workers to form unsupported PEI (M w 25 000 Da) hydrogel beads. 27 2019 saw the publication of three studies in which diepoxy crosslinkers yielded effective CO 2 adsorbents. The Andreoli group studied a range of materials synthesised from the cross-linking of PEI (M w 25 000 Da) Fig.…”

Section: Review Materials Advancesmentioning

confidence: 99%

“…120 Water has also been shown to have a beneficial effect on CO 2 adsorption capacity and kinetic uptake, to a greater or lesser extent, in many studies in which a polyamine adsorbent is exposed to moisture prior to and/or during adsorption. 27,94,99,108,116 Water may promote adsorption in several ways. Firstly, in the presence of water, the theoretical overall amine efficiency is improved as one mole of CO 2 can react with one mole of amine to form one mole of ammonium bicarbonate, Fig.…”

Section: Materials Advancesmentioning

confidence: 99%

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The application of amine-based materials for carbon capture and utilisation: an overarching view

et al. 2021

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Section: Co 2 Adsorption Analysis Methods and Conditionsmentioning

confidence: 99%

Section: Review Materials Advancesmentioning

confidence: 99%

Section: Materials Advancesmentioning

confidence: 99%

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The application of amine-based materials for carbon capture and utilisation: an overarching view

et al. 2021

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“…The formation of C O and −CH N-species is a main reason for the air degradation of amine sorbents (Ahmadalinezhad and Sayari, 2014). To improve the regeneration and long-term stability of PEI-based sorbents, a two-step synthesis strategy involving support modification followed by PEI loading has been proposed and studied (Choi et al, 2016;Jeon et al, 2018;Min et al, 2018a;Min et al, 2018b;Xu et al, 2018;Kim et al, 2019;Wang et al, 2020), which have been summarized and elaborated in our recent book chapter (Wang and Song, 2019).…”

Section: Adsorptionmentioning

confidence: 99%

Carbon Capture From Flue Gas and the Atmosphere: A Perspective

2020

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Climate change has become a worldwide concern with the rapid rise of the atmospheric Co2 concentration. To mitigate Co2 emissions, the research and development efforts in Co2 capture and separation both from the stationary sources with high Co2 concentrations (e.g., coal-fired power plant flue gas) and directly from the atmosphere have grown significantly. Much progress has been achieved, especially within the last twenty years. In this perspective, we first briefly review the current status of carbon capture technologies including absorption, adsorption, membrane, biological capture, and cryogenic separation, and compare their advantages and disadvantages. Then, we focus mainly on the recent advances in the absorption, adsorption, and membrane technologies. Even though numerous optimizations in materials and processes have been pursued, implementing a single separation process is still quite energy-intensive or costly. To address the challenges, we provide our perspectives on future directions of Co2 capture research and development, that is, the combination of flue gas recycling and hybrid capture system, and one-step integrated Co2 capture and conversion system, as they have the potential to overcome the technical bottlenecks of single capture technologies, offering significant improvement in energy efficiency and cost-effectiveness.

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“…Consequently, PEI molecule adsorbs on the steel surface physically and 100 μmol L −1 of PEI gives 88% corrosion inhibition efficiency. On the other hand, the PEI molecule has a CO 2 sorption affinity which influence the CO 2 molecule to interact with the PEI adsorbed www.nature.com/scientificreports www.nature.com/scientificreports/ molecule instead of the metal surface [78][79][80][81][82][83] . As a result, a dense protective layer formed over the metal surface in the presence of the PEI corrosion inhibitor and it is more compact than the corresponding layer with the CO 2 as seen in Fig.…”

Section: Thermodynamic Activation Parameters and Inhibition Mechanismmentioning

confidence: 99%

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

Shahzad

Sliem

Shakoor

et al. 2020

Sci Rep

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The present work studied the effect of temperature on the corrosion behavior of API X120 steel in a saline solution saturated with co 2 in absence and presence of polyethyleneimine (pei) as an environmentally safe green inhibitor. The effect of PEI on the corrosion behavior of API X120 steel was investigated using destructive and non-destructive electrochemical techniques. The overall results revealed that PEI significantly decreases the corrosion rate of API X120 steel with inhibition efficiency of 94% at a concentration of 100 μmol L −1. The adsorption isotherm, activation energy and the thermodynamic parameters were deduced from the electrochemical results. It is revealed that the adsorption of PEI on API X120 steel surface follows Langmuir adsorption isotherm adopting a Physichemisorption mechanism. Finally, the samples were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques to elucidate the effect of aggressiveness of corrosive media on the surface morphology and the corrosion performance of API X120 steel. The surface topography result indicates that the API X120 steel interface in PEI presence is smoother than co 2 with cl − ions or cl − ions only. This is attributed to the compact protective film limits the aggressive ions transfer towards the metallic surface and reduces the corrosion rate. Moreover, PEI inhibition mechanism is based on its co 2 capturing ability and the PEI adsorption on the steel surface beside the siderite layer which give the PEI molecules the ability to reduce the scale formation and increase the corrosion protection due to capturing the CO 2 from the brine solution. High strength low alloy (HSLA) steels are widely finding its applications in oil & gas industry, thermal power plants and in aerospace industry etc. due to its improved mechanical properties, superior corrosion resistance and weldability when compared with plain carbon steel 1-4. Series of comparative studies have been focused on HSLA pipelines steels in order to understand the effect of alloying elements, heat treatments and other changeable factors on their mechanical properties and microstructure 5-8. it has been reported that the yield strength of the API X120 steel is in range 780-951 MPa based on the shape of the specimen. Moreover, the tensile strength is varied from 940 to 1023 MPa and the strength is more than X120 ksi and reaches to X120 grade according to the API standards 9-11. Corrosion is the major problem that compact the API X120 steel pipelines in the transportation of oil, gas. There are a myriad number of studies that investigate the influence of carbon dioxide with saline solution on the corrosion mechanism of different grades of steel pipelines employed in the pipeline applications 12,13. Additionally, it has been reported that the presence of carbonate ions in oilfield brine solution increases the corrosion rate of the pipelines 14-16. Several parameters have been noted for the corrosion of steel in CO 2 environment such as PH, temperature, CO 2 pres...

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Carbon capture with polyethylenimine hydrogel beads (PEI HBs)

Abstract: A new class of CO2 sorbents, namely polyethylenimine hydrogel beads (PEI HBs), has been developed via a simple one-step crosslinking reaction of PEI using epichlorohydrin (EPC).

Cited by 47 publications

References 28 publications

The application of amine-based materials for carbon capture and utilisation: an overarching view

The application of amine-based materials for carbon capture and utilisation: an overarching view

Carbon Capture From Flue Gas and the Atmosphere: A Perspective

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

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