Amine-functionalized MOF-5 for CO2 capture
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Amine-functionalized metal-organic frameworks (MOFs) have shown great potential for CO2 capture. Various studies have highlighted the effectiveness of different amine-modified MOFs in enhancing CO2 adsorption capacities. For instance, the incorporation of aminosilane into MIL-125 improved CO2 adsorption significantly, while ethylenediamine-decorated MOF-520 exhibited superior CO2 capture performance with enhanced selectivity and regeneration capabilities. Additionally, Cu(adci)-2, a cuprous-based ultramicroporous MOF, demonstrated high CO2 adsorption capacity and retention even in the presence of moisture. These findings collectively suggest that amine-functionalized MOFs, such as ZrFu, Cu(adci)-2, SAP-MIL-125, and ED@MOF-520, hold promise for efficient CO2 capture applications due to their enhanced adsorption capacities, selectivity, and stability.
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| Papers (5) | Insight |
|---|---|
| Amine-decorated Al-MOFs, like ED@MOF-520, exhibit high CO2 selectivity and capacity, making them effective for CO2 capture, with a CO2/N2 separation factor of 50 at 273 K. | |
| Not addressed in the paper. | |
| Aminosilane-functionalized Ti-based MOF (SAP-MIL-125) showed enhanced CO2 adsorption, selectivity, and stability, indicating potential for CO2 capture, unlike MOF-5. | |
| Not addressed in the paper. | |
| In-situ grafted amine-functionalized ZrFu MOFs, not MOF-5, enhance CO2 capture. DETA-modified ZrFu showed a max capacity of 86 g CO2/kg sorbent, demonstrating improved performance. |
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Amine-functionalized MOF-74 for CO2 capture5 answersAmine-functionalized metal-organic frameworks (MOFs) have shown promising potential for CO2 capture applications. Various studies have highlighted the effectiveness of incorporating different types of amines into MOF structures to enhance CO2 adsorption capacities. For instance, the introduction of polydentate amines like diethylenetriamine (DETA) and tetraethylenepentamine (TEPA) into zirconium fumarate MOFs significantly increased the CO2 capture capacity. Similarly, ethylenediamine (ED)-decorated Al-based MOFs exhibited superior CO2 capture performance with enhanced CO2/N2 separation factors. Additionally, the integration of amino-functionalized imidazole ionic liquids onto covalent organic framework materials resulted in higher CO2 capture activities compared to non-functionalized counterparts. These findings collectively support the use of amine-functionalized MOFs, such as MOF-74, for efficient CO2 capture applications.
What are the most widely used amine-based sorbents for CO2 capture?5 answersPoly(ethyleneimine) (PEI) and tetraethylenepentamine (TEPA) are the most widely used amine-based sorbents for CO2 capture. These sorbents have high CO2 adsorption capacity and selectivity, making them suitable for direct air capture (DAC) of CO2. PEI and TEPA can be impregnated into porous alumina or supported on materials like γ-Al2O3 and MIL-101(Cr). The performance of these sorbents is influenced by factors such as temperature, humidity, and the presence of other gases like O2. The CO2 capture mechanisms of impregnated amines can be controlled by adjusting the degree of amine-solid support interaction. Overall, PEI and TEPA sorbents show promise for CO2 capture in DAC systems, and further research is needed to optimize their performance under different environmental conditions.
Amine conversion of Carbon dioxide5 answersAmine conversion of carbon dioxide has been extensively studied for various applications. One approach involves the use of Ru-Macho-BH complex and ethylenediamine (EDA) as a tandem catalyst, which has shown promising results in converting CO2 to methanol through different routes. Another strategy is the in-situ amine functionalization of nitrogen-doped graphene quantum dots (GQDs), which have demonstrated high efficiency in converting CO2 to methane and other C2 products. Additionally, a catalyst for carbon dioxide conversion has been developed using a compound with a tertiary amine group and a hydroxyl group, which has shown high conversion rates without the need for metals or halides. Furthermore, the capture of CO2 with various amines in organic solvents has been explored, leading to the formation of ureas with high selectivity and yield. Finally, the design of a metal-organic framework (MOF) photocatalyst with amine functional groups has shown enhanced activity and selectivity in converting CO2 to CO.
Amino acid- based MOFs for separation5 answersAmino acid-based metal-organic frameworks (MOFs) have been investigated for their potential in separation processes. The introduction of amino (-NH2) groups into MOFs has been shown to enhance the separation performance of these materials. For example, the functionalization of Tb-MOF-76 with -NH2 groups resulted in increased selectivity for ethane (C2H6) over ethylene (C2H4). Additionally, the functionalization of MIL-101 (Cr), MIL-125 (Ti), and UiO-66 (Zr) MOFs with amino groups improved their desalination and cooling performances. These amino-functionalized MOFs exhibited higher water adsorption capacities and rates, leading to improved water production and cooling efficiency. The functionalization of MOFs with amino acid-based biomolecules, such as peptides and proteins, has also been explored for various applications, including drug delivery and biosensing. Overall, amino acid-based MOFs show promise for separation processes due to their enhanced selectivity and improved performance.
Amine adsorption direct air capture efficiency improve5 answersAmine adsorption for direct air capture (DAC) can be improved by using different types of amines and optimizing the conditions. PEI-impregnated FAU zeolite showed high CO2 adsorption capacity and rate under dry conditions, and an enhanced adsorption capacity under humid conditions. TEPA-incorporated γ-Al2O3 samples exhibited high CO2 adsorption capacities at ambient and cold temperatures, with further improvement when moisture was introduced. TEPA-modified hierarchical silica particles demonstrated high CO2 uptake and excellent amine efficiency under DAC conditions, as well as good performance under humid conditions. A solid adsorbent based on A400 Purolite resin functionalized with TEPA and surfactant showed increased CO2 capture capacity and stability. Optimizing the durations of the adsorption and regeneration phases, as well as choosing appropriate operating parameters, can significantly improve DAC performance.
Amine functionalized Graphene nanoplatelets XRD PEAKS?5 answersAmine-functionalized graphene nanoplatelets (AGNPs) were studied in multiple papers. The X-ray diffraction (XRD) peaks of AGNPs were not specifically mentioned in any of the abstracts provided. However, the papers by Behnejad et al. and Park et al. discussed the synthesis and characterization of AGNPs. The paper by Behnejad et al. focused on the preparation and evaluation of nanocatalysts using amine-functionalized graphene as a support material. On the other hand, the paper by Park et al. investigated the effects of AGNPs on the curing and physical properties of an epoxy resin. While both papers provided valuable insights into the properties and applications of AGNPs, they did not mention the XRD peaks specifically. Therefore, the XRD peaks of amine-functionalized graphene nanoplatelets were not addressed in the abstracts provided.