Development of KNaTiO3 as a novel high-temperature CO2 capturing material with fast sorption rate and high reversible sorption capacity

Zheng, Qianwen; Huang, Liang; Zhong, Ziyi; Louis, Benoît; Wang, Qiang

doi:10.1016/j.cej.2019.122444

Cited by 19 publications

(4 citation statements)

References 62 publications

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“…Through XRD analysis it was found that K 2 Ti 2 O 5 transformed into K 2 Ti 4 O 9 and K 2 CO 3 upon carbonation, and the structural transformation was reversible when the CO 2 was released from the sample. Exceptionally fast CO 2 sorption kinetics were observed using potassium sodium titanate KNaTiO 3 , with very little dependence on the p CO 2 (ranging from 0.2–1 bar), reaching a CO 2 uptake capacity of ∼18 wt % within a few minutes at 700 °C . No significant increase in the rate and extent of CO 2 sorption was observed in the presence of steam.…”

Section: Other Solid Oxide-based Sorbentsmentioning

confidence: 91%

“…Exceptionally fast CO 2 sorption kinetics were observed using potassium sodium titanate KNaTiO 3 , with very little dependence on the p CO 2 (ranging from 0.2−1 bar), reaching a CO 2 uptake capacity of ∼18 wt % within a few minutes at 700 °C. 536 No significant increase in the rate and extent of CO 2 sorption was observed in the presence of steam. The cyclic transformation of the KNaTiO 3 phase is rather complex and involves a mixture of the phases K 2 Ti 6 O 13 , Na 2 Ti 6 O 13 , K 2 CO 3 , and Na 2 CO 3 as the products after CO 2 uptake.…”

Section: Other Solid Oxide-based Sorbentsmentioning

confidence: 92%

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CO₂ Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

et al. 2021

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Carbon dioxide capture and mitigation form a key part of the technological response to combat climate change and reduce CO2 emissions. Solid materials capable of reversibly absorbing CO2 have been the focus of intense research for the past two decades, with promising stability and low energy costs to implement and operate compared to the more widely used liquid amines. In this review, we explore the fundamental aspects underpinning solid CO2 sorbents based on alkali and alkaline earth metal oxides operating at medium to high temperature: how their structure, chemical composition, and morphology impact their performance and long-term use. Various optimization strategies are outlined to improve upon the most promising materials, and we combine recent advances across disparate scientific disciplines, including materials discovery, synthesis, and in situ characterization, to present a coherent understanding of the mechanisms of CO2 absorption both at surfaces and within solid materials.

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Section: Other Solid Oxide-based Sorbentsmentioning

confidence: 91%

Section: Other Solid Oxide-based Sorbentsmentioning

confidence: 92%

CO₂ Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

et al. 2021

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“…Among all types of Na-doped alkali titanates, potassium titanate (KNaTiO 3 ) has emerged as one of the most promising types for high-temperature CO 2 capture. This can be attributed to its remarkable cyclic stability and rapid CO 2 sorption rate (Zheng et al, 2020). A novel alkali titanate-based sorbent, K x Na 2−x TiO 3 , has been reported.…”

Section: Alkaline Titanate-based Sorbentsmentioning

confidence: 99%

Recent advances, challenges, and perspectives on carbon capture

Zhang,

Shen,

Zheng

et al. 2024

Front. Environ. Sci. Eng.

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Carbon capture, utilization and storage (CCUS) technologies play an essential role in achieving Net Zero Emissions targets. Considering the lack of timely reviews on the recent advancements in promising CCUS technologies, it is crucial to provide a prompt review of the CCUS advances to understand the current research gaps pertained to its industrial application. To that end, this review first summarized the developmental history of CCUS technologies and the current large-scale demonstrations. Then, based on a visually bibliometric analysis, the carbon capture remains a hotspot in the CCUS development. Noting that the materials applied in the carbon capture process determines its performance. As a result, the state-of-the-art carbon capture materials and emerging capture technologies were comprehensively summarized and discussed. Gaps between state-of-art carbon capture process and its ideal counterpart are analyzed, and insights into the research needs such as material design, process optimization, environmental impact, and technical and economic assessments are provided.

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“…Global warming caused by elevated CO 2 levels in the atmosphere is one of the greatest challenges in the 21st century . While most CO 2 emissions originate from the combustion of fossil fuels, the fundamental dependence of the global economy on fossil fuels precludes us from eliminating all emissions immediately. , To address this problem, extensive efforts have been devoted to developing advanced CO 2 capture technologies. − Chemisorption is one of the most promising technologies because it can selectively and flexibly deal with wide concentrations of CO 2 -containing gases. , Depending on the property of the adsorbent, the chemisorbed CO 2 could be permanently stored in thermodynamically stable minerals or desorbed as a concentrated CO 2 stream to produce value-added chemicals. − CO 2 capture technology capable of producing high-purity CO 2 is an essential foundation and a key challenge toward CO 2 -based sustainable feedstocks . It requires both rapid CO 2 capture and release at a low energy cost.…”

Section: Introductionmentioning

confidence: 99%

Lead Looping for Low-Temperature CO₂ Capture and Release

Liu

Zou

et al. 2022

J. Phys. Chem. C

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The sustainable use of metal oxides to rapidly capture and release CO2 as a C1 building block at a low energy cost is appealing yet challenging. Herein, we show that vicinal diols (e.g., ethylene glycol, glycerol, and 1,2-propanediol) can significantly accelerate the carbonation rates of PbO at ambient conditions, accompanied by a CO2 uptake capacity (567 mmol mol–1) comparable to that of the frequently used CaO and MgO. It is revealed that the in situ generated metal–organic hybrid materials of PbO and vicinal diols are the key intermediates for the reaction cycle. They can rapidly react with CO2 to generate PbCO3, accompanied by the release of vicinal diols for the next reaction cycle. The accelerated CO2 capture at ambient conditions coupled with the easy regeneration of PbO and release of CO2 via calcination of PbCO3 at a low temperature (∼300 °C) constitutes a new lead looping process with low energy input.

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Development of KNaTiO3 as a novel high-temperature CO2 capturing material with fast sorption rate and high reversible sorption capacity

Cited by 19 publications

References 62 publications

CO₂ Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

CO₂ Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

Recent advances, challenges, and perspectives on carbon capture

Lead Looping for Low-Temperature CO₂ Capture and Release

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Development of KNaTiO3 as a novel high-temperature CO2 capturing material with fast sorption rate and high reversible sorption capacity

Cited by 19 publications

References 62 publications

CO2 Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

CO2 Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

Recent advances, challenges, and perspectives on carbon capture

Lead Looping for Low-Temperature CO2 Capture and Release

Contact Info

Product

Resources

About

CO₂ Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

CO₂ Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

Lead Looping for Low-Temperature CO₂ Capture and Release