Speciation and gas-liquid equilibrium study of CO2 absorption in aqueous MEA-DEEA blends

Gas Science and Engineering, Год журнала: 2023, Номер 119, С. 205135 - 205135

Опубликована: Сен. 27, 2023

Язык: Английский

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One-step synthesis of SO42−/ZrO2‑SEP solid-acid catalyst for energy-efficient CO2 capture

Separation and Purification Technology, Год журнала: 2024, Номер 359, С. 130577 - 130577

Опубликована: Ноя. 16, 2024

Язык: Английский

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A modified semi-empirical model for correlating and predicting CO2 equilibrium solubility in aqueous 2-[2-(dimethylamino)ethoxy]ethanol solution

Separation and Purification Technology, Год журнала: 2023, Номер 323, С. 124364 - 124364

Опубликована: Июнь 18, 2023

Язык: Английский

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Biochar-mediated release of CO2 from monoethanolamine/H2O solution with low energy requirement over ZrO2/SiO2/biochar ternary catalysts

Journal of Cleaner Production, Год журнала: 2024, Номер 439, С. 140795 - 140795

Опубликована: Янв. 22, 2024

Язык: Английский

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Cost-Effective Preparation of Carbonic Anhydrase with Superior Performance for Assisting Amine and Amino Acid Ionic Liquid Blends in CO₂ Absorption and Desorption

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(11), С. 4444 - 4455

Опубликована: Март 7, 2024

The utilization of carbonic anhydrases (CAs) for CO2 capture aligns with the principles environmental sustainability. However, there is an urgent need to minimize cost CA purification while improving their performance in harsh environments. A novel strategy was proposed solve above problems by employing ferritin-tagged variant (DvCA8.0-F). achieved low-speed centrifugation, yielding 92% activity recovery and 95% purity. After 14 weeks incubation a 50% MDEA solution at 50 °C, DvCA8.0-F maintained nearly equivalent initial activity, which showed remarkable stability compared free ones. Encouragingly, had yield up 800 mg/L, allowing cost-effective CA-assisted absorption desorption solutions. results show that reduced time from 70 min 40 °C 25 96 25%MDEA+1%[N1111][Gly] final load stripped amount same time. exhibits maximum reaction rate °C; regeneration efficiency improved 60% 87 72%. When concentration 1.5 g/L, reached about 90% 25% MEA solution. These demonstrate simplicity preparation outstanding properties DvCA8.0-F, paves feasible way capture. This exciting may also have excellent potential enzymes innovative chemical synthesis achieve sustainable development green chemistry.

Язык: Английский

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Niobium-Modified HZSM-5 Zeolite Catalyzes Low-Energy Regeneration of CO₂-Captured Amine Solution

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(24), С. 9045 - 9053

Опубликована: Июнь 3, 2024

Monoethanolamine (MEA)-based carbon dioxide absorption is one of the effective capture, utilization, and storage (CCUS) technologies but significantly restricted by high energy consumption in regeneration rich amine solution. Solid acid catalysts have potential to reduce consumption, while exploration highly active with abundant Bro̷nsted Lewis sites remains needing. We developed an efficient solid catalyst, niobium-modified HZSM-5 (Nb/HZ), facilitate CO2 desorption from CO2-captured MEA solutions. The Nb/HZ various niobium loadings were synthesized using impregnation method. retained its pore structure large surface area after incorporation. catalyst 4% Nb (4.0-Nb/HZ) has highest activity stability, 61% increase rate, 50% desorbed amount, 37% reduction relative heat duty. According theoretic calculations experimental analyses, provides carbamate adsorption, proton transfer, breakdown, thus reducing activation for desorption. This work a valuable amine-based capture also brings insights development novel diverse catalysis.

Язык: Английский

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Acid-treated activated carbon as simple and inexpensive catalyst to accelerate CO2 desorption from aqueous amine solution

Carbon Capture Science & Technology, Год журнала: 2023, Номер 8, С. 100131 - 100131

Опубликована: Июль 30, 2023

Catalytic amine regeneration has emerged as a promising technique for accelerating CO2 desorption from aqueous solutions at temperatures ≤ 100 ⁰C, to ultimately reduce the thermal penalty of capture process. However, development abundant and inexpensive materials is imperative. Herein, we prepared superabundant low-cost activated carbon (AC) catalysts by activating AC with two acidic solutions, sulfuric acid (H2SO4) phosphoric (H3PO4), investigated their catalytic performance in process temperature 86°C. The experimental results revealed that are highly effective can significantly increase rate desorbed quantity low 60°C. Catalyst characterization data shows have higher surface area acidity, together both which accelerate much lower heat duty ∼20%. easily be separated reused cyclic experiments, showcasing potential use continuous unit. This study demonstrates optimize process, leading green

Язык: Английский

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Novel biphasic solvent based on 2MPRZ absorbent for post-combustion CO2 capture with low viscosity, superior phase-splitting behavior and low energy consumption

Separation and Purification Technology, Год журнала: 2023, Номер 330, С. 125424 - 125424

Опубликована: Окт. 28, 2023

Язык: Английский

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Cu-BDC MOF/CNFs hybrids for rapid CO2 capture in a circulating fluidized bed via temperature swing adsorption process

Chemical Engineering Science, Год журнала: 2024, Номер 287, С. 119773 - 119773

Опубликована: Янв. 20, 2024

Язык: Английский

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Promotional effect of microwave radiation treatment on the desorption of CO2 from mono-ethanolamine (MEA) solution over FeOOH catalyst

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(6), С. 114382 - 114382

Опубликована: Окт. 10, 2024

Язык: Английский

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