Enhancing CO2 desorption performance in rich MEA solution by addition of SO42−/ZrO2/SiO2 bifunctional catalyst

Bairq, Zain Ali Saleh; Gao, Hongxia; Huang, Yufei; Zhang, Haiyan; Liang, Zhiwu

doi:10.1016/j.apenergy.2019.113440

Cited by 53 publications

(34 citation statements)

References 60 publications

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“…As expected, both SO 4 2– /ZrO 2 (79.5%, 1257.8 kJ/mol of CO 2 ) and γ-Al 2 O 3 (82.7%, 1307.9 kJ/mol of CO 2 ) exhibited much less catalytic performance under the same regeneration conditions, reconfirming the benefits of hybrid composite catalysts with a mesoporous support. In a similar research study, Ali Saleh Bairq and co-workers selected SiO 2 as a mesoporous acidic support and employed a modified impregnation method to load superacid SO 4 2– /ZrO 2 catalyst. The investigations revealed that the SO 4 2– /ZrO 2 to SiO 2 ratio plays an indispensable role in the synthesis of a hybrid SO 4 2– /ZrO 2 /SiO 2 catalyst to optimize catalytic activity.…”

Section: Heterogeneous Nanocatalysts Applied For Enhanced Solvent Reg...mentioning

confidence: 99%

“…It is worth mentioning that catalysts cannot change the theoretical level of thermodynamic energy required. It is generally accepted that the energy consumption required for CO 2 desorption is related to the difficulty of proton transfer from MEAH + to H 2 O in the deprotonation reaction (reaction ), the limited number of available protons for carbamate decomposition (reaction ), and the endothermic nature of these reactions. , These conditions cause the CO 2 liberation process to barely occur at low temperatures. The importance of Lewis and Brønsted acid sites on the surface of solid acid catalysts at low-temperature CO 2 desorption has been extensively investigated since 2011. ,,, …”

Section: Promotion Mechanism Of Catalytic Co2 Desorptionmentioning

confidence: 99%

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Catalytic Solvent Regeneration for Energy-Efficient CO₂ Capture

Alivand

Mazaheri

et al. 2020

ACS Sustainable Chem. Eng.

100

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CO 2 emissions from industrial processes and their adverse implications on the climate is of major concern. Carbon capture and storage (CCS), especially using chemical-absorption-based processes, has been regarded as one of the most realistic pathways to curtail global warming and climate change. However, the energy-intensive nature of CO 2 capture and therefore its expensive cost of operation has been regarded as the main barrier halting its widespread implementation among the portfolio of lowcarbon energy technologies currently available. Recently, catalytic solvent regeneration has drawn significant attention as a new class of technology for energy-efficient CO 2 capture with great potential for large-scale implementation. In this review, recent progress and developments associated with catalyst-aided solvent regeneration for lowtemperature energy-efficient CO 2 desorption is presented. A detailed discussion of heterogeneous acid−base catalyst is undertaken and the specific privileges, drawbacks, and challenges of each catalyst identified and commented upon. In keeping with the latest investigations, the promotion mechanism of catalytic CO 2 desorption and the role of Lewis acids, Brønsted acids, and basic active sites are scrutinized. The performance of solid acid−base catalysts in different primary and blended amine solutions associated with their physicochemical properties is also reviewed. Finally, the status of catalytic solvent regeneration for post-combustion CO 2 capture is comprehensively analyzed and a clear pathway for future research investigations is provided.

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Section: Heterogeneous Nanocatalysts Applied For Enhanced Solvent Reg...mentioning

confidence: 99%

Section: Promotion Mechanism Of Catalytic Co2 Desorptionmentioning

confidence: 99%

Catalytic Solvent Regeneration for Energy-Efficient CO₂ Capture

Alivand

Mazaheri

et al. 2020

ACS Sustainable Chem. Eng.

100

View full text Add to dashboard Cite

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“…In 2020, the global carbon emissions in the energy industry reached 34 billion tons and the global CO 2 concentration rose to 412 ppm . Even so, fossil energy will still play an important role in the world’s energy consumption structure in the next few decades. , The carbon capture, utilization, and storage technology is considered an important approach to build a low-carbon and efficient energy system. Postcombustion CO 2 capture, including solvent or solid adsorption, membrane separation, and phase separation, is the primary way for reducing CO 2 emission …”

Section: Introductionmentioning

confidence: 99%

An Integrated Absorption–Mineralization Process for CO₂ Capture and Sequestration: Reaction Mechanism, Recycling Stability, and Energy Evaluation

Wang

Song

et al. 2021

ACS Sustainable Chem. Eng.

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An integrated absorption–mineralization process (IAM) was proposed to desorb and mineralize CO2 captured by amine solvents using the semidry desulfurization slag (DFS). Four typical amine solvents (monoethanolamine, diethanolamine, methyl-diethanolamine, and 2-amine-2-methyl-1-propanol) were investigated in the IAM process to evaluate the working capacity, recycling stability, and regeneration ability of the amine solvents. The reaction mechanism between CO2-saturated amine solutions and the DFS was interpreted with characterization by Fourier transform infrared spectroscopy and nuclear magnetic resonance. The results indicated that bicarbonates were more beneficial to CO2 chemical desorption than carbamates. Calcium hydroxide could mineralize bicarbonate and regenerate protonated amines, while calcium sulfate could only desorb bicarbonates and carbamates. By adjusting the solid–liquid ratio to prevent calcium from participating in mineralization, 2-amine-2-methyl-1-propanol showed the best recycling performance among all the amines because of its fast absorption rate, high CO2 desorption efficiency, and excellent stability.

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“…More importantly, high performing heterogeneous nanocomposites require complex synthesis procedures, particularly when an engineered porosity or functionalized surface is required, making them expensive options. Hence, it is of considerable importance to investigate the potential of advanced nanomaterials with facile and inexpensive preparation methodologies, engineered structures and targeted physicochemical merits. − …”

Section: Introductionmentioning

confidence: 99%

Water-Dispersible Nanocatalysts with Engineered Structures: The New Generation of Nanomaterials for Energy-Efficient CO₂ Capture

Alivand

Mazaheri

et al. 2021

ACS Appl. Mater. Interfaces

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The high energy demand of CO2 absorption–desorption technologies has significantly inhibited their industrial utilization and implementation of the Paris Climate Accord. Catalytic solvent regeneration is of considerable interest due to its low operating temperature and high energy efficiency. Of the catalysts available, heterogeneous catalysts have exhibited relatively poor performances and are hindered by other challenges, which have slowed their large-scale deployment. Herein, we report a facile and eco-friendly approach for synthesizing water-dispersible Fe3O4 nanocatalysts coated with a wide range of amino acids (12 representative molecules) in aqueous media. The acidic properties of water-dispersible nanocatalysts can be easily tuned by introducing different functional groups during the hydrothermal synthesis procedure. We demonstrate that the prepared nanocatalysts can be used in energy-efficient CO2 capture plants with ease-of-use, at very low concentrations (0.1 wt %) and with extra-high efficiencies (up to ∼75% energy reductions). They can be applied in a range of solutions, including amino acids (i.e., short-chain, long-chain, and cyclic) and amines (i.e., primary, tertiary, and primary-tertiary mixture). Considering the superiority of the presented water-dispersible nanocatalysts, this technology is expected to provide a new pathway for the development of energy-efficient CO2 capture technologies.

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Enhancing CO2 desorption performance in rich MEA solution by addition of SO42−/ZrO2/SiO2 bifunctional catalyst

Cited by 53 publications

References 60 publications

Catalytic Solvent Regeneration for Energy-Efficient CO₂ Capture

Catalytic Solvent Regeneration for Energy-Efficient CO₂ Capture

An Integrated Absorption–Mineralization Process for CO₂ Capture and Sequestration: Reaction Mechanism, Recycling Stability, and Energy Evaluation

Water-Dispersible Nanocatalysts with Engineered Structures: The New Generation of Nanomaterials for Energy-Efficient CO₂ Capture

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Enhancing CO2 desorption performance in rich MEA solution by addition of SO42−/ZrO2/SiO2 bifunctional catalyst

Cited by 53 publications

References 60 publications

Catalytic Solvent Regeneration for Energy-Efficient CO2 Capture

Catalytic Solvent Regeneration for Energy-Efficient CO2 Capture

An Integrated Absorption–Mineralization Process for CO2 Capture and Sequestration: Reaction Mechanism, Recycling Stability, and Energy Evaluation

Water-Dispersible Nanocatalysts with Engineered Structures: The New Generation of Nanomaterials for Energy-Efficient CO2 Capture

Contact Info

Product

Resources

About

Catalytic Solvent Regeneration for Energy-Efficient CO₂ Capture

Catalytic Solvent Regeneration for Energy-Efficient CO₂ Capture

An Integrated Absorption–Mineralization Process for CO₂ Capture and Sequestration: Reaction Mechanism, Recycling Stability, and Energy Evaluation

Water-Dispersible Nanocatalysts with Engineered Structures: The New Generation of Nanomaterials for Energy-Efficient CO₂ Capture