Novel tertiary amine-based biphasic solvent for energy-efficient CO2 capture with low corrosivity

Wang, Rujie; Zhao, Huajun; Qi, Cairao; Yang, Xiaomin; Zhang, Shihan; Li, Ming; Wang, Li Dong

doi:10.1016/j.energy.2022.125045

Cited by 25 publications

(3 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, an activated MDEA-based CPCA, which was a typical tertiary amine-based biphasic solvent, was considered to have great potential for CO 2 capture. 32 Comparing two absorbents, MDEA/PZ/sulfolane and DETA/sulfolane, 30 the phase separation behavior was different within the CO 2 partial pressure range from 15 to 100 kPa. When the CO 2 partial pressure was 15 kPa, MDEA/PZ/sulfolane was a single phase and DETA/sulfolane was a biphase.…”

Section: Effect Of the Activator On The Phase Separationmentioning

confidence: 99%

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO₂ Capture

Jin,

Ren,

Zheng

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

A CO 2 phase change absorbent (CPCA) is of interest because it has the potential to reduce energy consumption for CO 2 capture. Controllable phase separation behavior was expected in the development and application of a CPCA. In this study, the effects of CO 2 loading under different activators and physical solvents on the phase separation behavior of an activated methyldiethanolamine (MDEA)-based CPCA were investigated. By adjustment of the CO 2 loading, controllable phase separation behavior was achieved and the absorbent comprising an activator with more −NH− groups and a physical solvent with low E T (30) was favored to exhibit phase separation. Of special interest was that, with the increasing of CO 2 loading, phase behaviors, from the liquid phase to solid−liquid phase and then to the liquid phase, were observed for CPCA comprising MDEA/piperazine (PZ)/Nmethyl-2-pyrrolidone (NMP), which was different from all of the other known CPCAs. The solid compound was identified as PZ carbamate by X-ray diffraction (XRD), Fourier transform infrared (FTIR), and elemental analysis, and the liquid-phase samples were detected by 13 C nuclear magnetic resonance (NMR). The phase change mechanism of this special phenomenon was proposed.

show abstract

Section: Effect Of the Activator On The Phase Separationmentioning

confidence: 99%

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO₂ Capture

Jin,

Ren,

Zheng

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…For instance, adsorbents are readily degradable, require corrosion-prone equipment, and have a high regeneration cost. [5][6][7] Combining amine groups into porous solid supports for adsorptive separation is one solution to these difficulties. [8,9] Compared with liquid amine absorption, aminebased solid adsorbents have apparent advantages.…”

Section: Introductionmentioning

confidence: 99%

Antioxidative degradation mechanism of 2‐mercaptobenzimidazole modified TEPA‐MCM‐41 adsorbents for carbon capture from flue gas

et al. 2023

View full text Add to dashboard Cite

Solid amine adsorbents can efficiently adsorb CO2, but a significant problem is that amine groups are oxidized. In this research, tetraethylenepentamine‐impregnated MCM‐41 adsorbents (TEPA‐MCM‐41) were functionally modified with sulphur‐containing antioxidant 2‐mercaptobenzimidazole (described as antioxidant MB) and tns‐(2.4‐di‐tert‐butyl)‐phosphite (defined as antioxidant 168), respectively. The antioxidative degradation mechanism of 8% MB–50% TEPA‐MCM‐41 was analyzed by in situ diffuse reflectance infrared Fourier transform (in situ DRIFT) spectrum and high‐performance liquid chromatography/mass spectrometry (HPLC/mass). The CO2 adsorption capacity of 50% TEPA‐MCM‐41 was 4.30 mmol/g under 15% CO2/85% N2, but decreased to 1.38 mmol/g after oxidation at 100°C for 42 h under 95% N2/5% O2 certain condition. The CO2 capacity of 8% MB–50% TEPA‐MCM‐41 reduced from 3.90 to 2.86 mmol/g. After 30 adsorption cycles under 5% O2/15% CO2/80% N2, the capacity of 8% MB–50% TEPA‐MCM‐41 also only decreased by 16.8%, while 50% TEPA‐MCM‐41 decreased by 63.2%. The reason for the excellent antioxidant stability of 8% MB–50% TEPA‐MCM‐41 is that MB scavenged free radicals from amine oxidation and decomposed the hydroperoxides produced by free radical reactions. The hydroperoxides were decomposed into alcohols (non‐radical products), which were eventually oxidized to sulphonic compounds. The MB modification inhibited the oxidative degradation of solid amine adsorbents guided for the production of antioxidant‐efficient adsorbents.

show abstract

“…As a common AIE group, tertiary amine in solution systems has attracted extensive attention in recent years, and colorful displays can be obtained by adjusting its solution concentration [11][12][13]. However, the luminescent behavior of tertiary amino groups in bulk materials has been studied rarely.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of hydrogen-bond-enriched, fluorescent and triboelectric hyperbranched polymers via Michael addition reaction

Qiu,

2023

AETR

View full text Add to dashboard Cite

It is very meaningful to realize color recognition and mechanical-electrical energy conversion in one material simultaneously, which is very essential in improving the equipment of border guards. However, simultaneously endowing one material with color regonition and mechanical-electrical energy conversion presents challenges because they result from different mechanism. Herein, a series of hyperbranched polymers, HP9, HP10, and HP11, were synthesized via the Michael addition reaction to solve the dilemma. Extensive hydrogen bonding was embedded into these hyperbranched polymers, so that the polymers exhibit good triboelectrification ability. The voltage output is about 347 V, the current output is about 2.8 μA, and the charge quantity is about 150 nC, respectively. Moreover, the polymers display excellent fluorescence under 365 nm ultraviolet light based on the mechanism of aggregation-induced emission (AIE). Furthermore, the thermodynamic behavior and mechanical properties of the hyperbranched polymers can be regulated by adjusting the content of the hard segments. The Young's modulus and strength gradually increase with the increase of the hard segment unit. The Young’s modulus, strength and toughness of HP10 are 3.72 MPa, 2.69 MPa and 19.55 MJ/m3, respectively. The combination of fluorescence and frictional electrification will have great application potential in the equipment of border guards.

show abstract

Novel tertiary amine-based biphasic solvent for energy-efficient CO2 capture with low corrosivity

Cited by 25 publications

References 47 publications

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO₂ Capture

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO₂ Capture

Antioxidative degradation mechanism of 2‐mercaptobenzimidazole modified TEPA‐MCM‐41 adsorbents for carbon capture from flue gas

Synthesis of hydrogen-bond-enriched, fluorescent and triboelectric hyperbranched polymers via Michael addition reaction

Contact Info

Product

Resources

About

Novel tertiary amine-based biphasic solvent for energy-efficient CO2 capture with low corrosivity

Cited by 25 publications

References 47 publications

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO2 Capture

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO2 Capture

Antioxidative degradation mechanism of 2‐mercaptobenzimidazole modified TEPA‐MCM‐41 adsorbents for carbon capture from flue gas

Synthesis of hydrogen-bond-enriched, fluorescent and triboelectric hyperbranched polymers via Michael addition reaction

Contact Info

Product

Resources

About

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO₂ Capture

Phase Separation Behavior of an Activated Methyldiethanolamine-Based Biphasic Solvent for CO₂ Capture