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Latest Publications & Patents on Direct Air Capture

Direct Air Capture

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Direct air capture
Direct air capture (dac) is an innovative technology for removing atmospheric co2 through advanced sorbent materials and efficient processes.

Direct Air Capture (DAC) involves the extraction of carbon dioxide directly from ambient air using chemical or physical sorbents, enabling atmospheric CO2 removal independent of emission sources. This field focuses on sorbent development, adsorption-desorption cycles, energy-efficient regeneration methods, and system integration with carbon utilization or storage pathways. Innovations in solid and liquid sorbents, process intensification, and modular plant design drive improvements in capture capacity, selectivity, and operational costs. The following collection presents the most recent scientific publications and patented technologies, highlighting advancements in materials science, process engineering, techno-economic assessments, and large-scale deployment strategies critical to advancing DAC as a scalable climate mitigation technology.

This is our latest selection of worldwide publications and patents in english on Direct Air Capture, between many scientific online journals, classified and focused on direct air capture, DAC technology, CO2 sorbent, solid sorbent, liquid solvent DAC, CO2 adsorption, CO2 desorption, DAC regeneration, amine-based sorbent, metal-organic framework, DAC energy consumption, DAC process optimization, air capture, DAC scalability, DAC cost reduction, carbon capture, DAC integration, DAC carbon utilization and carbon storage.

Covalent-organic and metal-organic frameworks as low k materials

Patent published on the 2026-07-02 in WO under Ref WO2026143045 by APPLIED MAT INC [US] (Hosseini Seyedmahmoud [us], Devereaux Zachary J [us], Knisley Thomas [us], Kalutarage Lakmal C [us], Enman Lisa J [us])

Abstract: Implementations of the present disclosure generally relate to low k dielectric films disposed over a substrate. More particularly, implementations described herein provide, organic framework low k dielectric films and methods for forming the same. In at least one implementation, a process for depositing a film is provided and includes sequentially exposing a surface to a first organic compound and a second organic compound to form a film on the surface during a cyclic vapor deposition process, w[...]


Our summary: Covalent-organic and metal-organic frameworks are utilized as low k dielectric films over substrates. The methods involve sequential exposure to organic compounds during a cyclic vapor deposition process. The resulting films achieve a dielectric constant of 3 or less.

low k materials, dielectric films, organic frameworks, cyclic vapor deposition

Patent

Direct air capture (dac) process using a sorbent

Patent published on the 2026-06-25 in WO under Ref WO2026131532 by SHELL INT RESEARCH [NL] (Van Der Made Alexander Willem [nl], Ganji Santosh [in], Van Haandel Lennart [nl])

Abstract: A direct air capture (DAC) process for capturing CO2 from a stream of air by passing air through a capture unit comprising a sorbent structure The sorbent structure comprises an active component comprising sodium aluminate in an amount from 5 wt% and up to 40 wt% and a metal-containing support in an amount of at least 55 wt%, both based on the weight of the sorbent structure. The metal-containing support is selected from the group consisting of a metal alloy, metal oxide, metal-non-metal alloy, [...]


Our summary: The DAC process captures CO2 from air using a sorbent structure. The sorbent contains sodium aluminate and a metal-containing support. The method results in a treated air stream with reduced carbon dioxide levels.

direct air capture, sorbent structure, sodium aluminate, carbon dioxide

Patent

Systems and methods for carbon dioxide capture via desublimation and sublimation stages in a heat exchanger

Patent published on the 2026-06-25 in WO under Ref WO2026136651 by SCHLUMBERGER CA LTD [CA] (Verma Sandeep [us])

Abstract: A system is provided that includes a carbon capture system. The carbon capture system may include a heat exchanger including a plurality of passages. The carbon capture system also includes a coolant subsystem coupled to the heat exchanger, wherein the coolant subsystem includes a coolant fluid configured to indirectly cool and deposit carbon dioxide (CO2) from a flue gas stream into a CO2 deposit within a first subset of the plurality of passages during a desublimation stage, wherein the coolan[...]


Our summary: The system captures carbon dioxide using a heat exchanger with multiple passages. It cools flue gas to deposit CO2 during desublimation and later sublimates it for purging. The process involves a coolant subsystem that operates independently from the flue gas stream.

carbon capture, heat exchanger, desublimation, sublimation

Patent

Harnessing mechanochemistry for direct synthesis of imine-based metal-organic frameworks

Patent published on the 2026-06-25 in US under Ref US20260176291 by UNIV OHIO [US] (Tegudeer Zhuorigebatu [us], Gao Wenyang [us])

Abstract: The growth of metal-organic frameworks (MOFs) is most frequently accessed by direct assembly of metal cations and multitopic ready-to-connect ligands under solvothermal conditions. However, such nonambient conditions are expected to impose a synthetic challenge to incorporate degradable ligands into MOFs. This explains why imine-based MOFs are scarce, as the imine motif is usually prone to decompose through hydrolysis. This work not only showcases mechanochemistry as an ambient, sustainable, and[...]


Our summary: This study demonstrates the use of mechanochemistry for synthesizing imine-based metal-organic frameworks (MOFs). It addresses the challenges of incorporating degradable ligands by integrating ligand synthesis and MOF growth into one step. The approach offers a sustainable and efficient method for producing these historically difficult materials.

mechanochemistry, imine-based MOFs, metal-organic frameworks, sustainable synthesis

Patent

Green synthesis of mof for gaz capture

Patent published on the 2026-06-25 in WO under Ref WO2026132860 by ECOLE SUPERIEURE PHYSIQUE & CHIMIE IND VILLE DE PARIS [FR] (Nandi Shyamapada [fr], Serre Christian [fr], Pugnet Veronique [fr], Mouchaham Georges [fr], Nouar Farid [fr])

Abstract: The present invention relates to a Metal-Organic Framework (MOF) that exhibits superior CO2 adsorption efficiency, notably in some humid environments, and an advanced method for fabricating said MOF, the method complying with environment constraints, and a CO2 capture process using the MOF of the present invention.[...]


Our summary: The invention presents a Metal-Organic Framework (MOF) with high CO2 adsorption efficiency in humid conditions. It details an environmentally compliant fabrication method for the MOF. Additionally, a CO2 capture process utilizing this MOF is described.

MOF, CO2 adsorption, green synthesis, gas capture

Patent

Captured carbon liquefication cooling using fuel cell heat recovery

Patent published on the 2026-06-24 in EP under Ref EP4764377 by TECHNIP ENERGIES FRANCE [FR] (Pawar Dhairyasheel [fr])

Abstract: [0001] A system and method of generating electrical energy using a fuel cell while decarbonizing an exhaust gas generated by the fuel cell is disclosed. Heat generated by an electrochemical reaction within the fuel cell can be recovered at both an anode side and a cathode side of the fuel cell, and at least some of the recovered heat can be used to preheat each of a fuel feed and an oxidant supplied to the fuel cell. A carbon capture system may be included and used to capture and liquefy carbon [...]


Our summary: A system generates electrical energy using a fuel cell while decarbonizing exhaust gases. Heat from the fuel cell s electrochemical reaction is recovered for preheating fuel and oxidant. A carbon capture system liquefies carbon dioxide from the anodic exhaust gas using cooled refrigerant.

carbon capture, fuel cell, heat recovery, liquefaction

Patent

Spherical MgSiO3&ndash;NH2 Adsorbents with Optimized Surface Chemistry for Humidity-Enhanced Direct Air CO2 Capture

Published on 2026-02-03 by Sungho Park, Hyeok-Jung Kim @MDPI

Abstract: Amine-functionalized solid adsorbents are widely recognized as promising candidates for direct air capture of CO2; however, their practical deployment remains constrained by humidity-dependent adsorption behavior and poor packed-bed operability arising from irregular particle morphology and fines generation. Rather than focusing solely on maximizing intrinsic adsorption capacity, this study addresses these process-level limitations through an integrated design strategy combining particle morphol[...]


Our summary: This study presents optimized spherical magnesium silicate adsorbents for CO2 capture. It addresses limitations in humidity-dependent adsorption and particle morphology. The adsorbents show enhanced performance under humid conditions, achieving significant carbon dioxide capture capacities.

Adsorbents, CO2 capture, Surface chemistry, Humidity-enhanced

Publication

A Review on the Preparation, Properties, and Mechanism of Lignin-Modified Asphalt and Mixtures

Published on 2026-02-03 by Yu Luo, Guangning Ge, Yikang Yang, Xiaoyi Ban, Xuechun Wang, Zengping Zhang, Bo Bai @MDPI

Abstract: Lignin, an abundant and renewable biopolymer, holds significant potential for asphalt modification owing to its unique aromatic structure and reactive functional groups. This review summarizes the main lignin preparation routes and key physicochemical attributes and assesses its applicability for enhancing asphalt performance. The physical incorporation of lignin strengthens the asphalt matrix, improving its viscoelastic properties and resistance to oxidative degradation. These enhancements are [...]


Our summary: This review discusses the preparation and properties of lignin-modified asphalt (LMA). Lignin enhances asphalt s viscoelastic properties and resistance to degradation through cross-linking and antioxidant mechanisms. Future research should focus on large-scale tests and molecular interactions to optimize LMA performance.

Lignin, Asphalt Modification, Physicochemical Properties, Life Cycle Assessment

Publication

Topics covered: Direct Air Capture, sorbent materials, carbon dioxide removal, adsorption-desorption cycles, energy-efficient regeneration, carbon utilization, process intensification, modular plant design, capture capacity, selectivity, operational costs, materials science, process engineering, techno-economic assessments, large-scale deployment, climate mitigation technology, ISO 14064, ISO 50001, ASTM D6866, ISO 14040, and ISO 14044..

Glossary of Terms Used

Direct Air Capture (DAC): a technology that extracts carbon dioxide directly from ambient air, using chemical processes or physical methods, to reduce greenhouse gas concentrations and mitigate climate change impacts.

Historical Context

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(if date is unknown or not relevant, e.g. "fluid mechanics", a rounded estimation of its notable emergence is provided)

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