Amine‐functionalized mesoporous silica: A material capable of CO<sub>2</sub> adsorption and fast regeneration by microwave heating

Nigar, Hakan; García-Baños, Beatriz; Peñaranda‐Foix, Felipe L.; Catalá-Civera, J.M.; Mallada, Reyes; Santamarı́a, Jesús

doi:10.1002/aic.15118

Cited by 76 publications

(33 citation statements)

References 35 publications

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“…Inserting alkaline amine groups into adsorbents can improve CO 2 chemisorption, which can be normally achieved in three routes: amines anchored to the supports in the form of covalent bonds, 24,25 amines impregnated into the inner channel of supports 26,27 and amine containing polymers introduced directly without second modication by molecular imprinting technology. 28,29 In the rst route, the graed amines are usually aminosilanes.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of carbon dioxide by a novel amine impregnated ZSM-5/KIT-6 composite

Lin

Wei

et al. 2017

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Adsorption of carbon dioxide by a novel amine impregnated ZSM-5/KIT-6 composite

Lin

Wei

et al. 2017

RSC Adv.

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“…Many porous materials (e.g., zeolites, carbons, and silica) have been developed for CO 2 capture. Among them, N‐doped porous carbons (NPCs) have received much attention because of their low cost, high porosity, and good chemical and thermal stability .…”

Section: Introductionmentioning

confidence: 99%

N‐doped porous carbons for CO₂ capture: Rational choice of N‐containing polymer with high phenyl density as precursor

et al. 2016

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in Wiley Online Library (wileyonlinelibrary.com) N-doped porous carbons (NPCs) are highly promising for CO 2 capture, but their preparation is severely hindered by two factors, namely, the high cost of N-containing polymer precursors and the low yield of carbon products. Here we report for the first time the fabrication of NPCs through the rational choice of the polymer NUT-4, with low cost and high phenyl density, as precursor. For the material NPC-600 obtained from carbonization at 6008C, the yield is as high as 52.1%. The adsorption capacity of CO 2 on NPC-600 reaches 6.9 mmol/g at 273 K and 1 bar, which is obviously higher than that on the benchmarks, including 13X zeolite (4.1 mmol/g) and activated carbon (2.8 mmol/g), as well as most reported carbon materials. Our results also demonstrate that the present NPCs can be completely regenerated under mild conditions. The abundant microporosity and "CO 2 -philic" (N-doped) sites are responsible for the adsorption performance.

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“…Nigar et al focused on CO 2 desorption from a functionalized mesoporous silica reporting a significant reduction in desorption time when switching from conventional heating to microwave heating. Moreover, the authors also found no changes in the adsorption capacity of the amino-functionalized material after 20 adsorption-regeneration cycles [199].…”

Section: Environmental Catalysismentioning

confidence: 97%

Microwaves and Heterogeneous Catalysis: A Review on Selected Catalytic Processes

et al. 2020

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Since the late 1980s, the scientific community has been attracted to microwave energy as an alternative method of heating, due to the advantages that this technology offers over conventional heating technologies. In fact, differently from these, the microwave heating mechanism is a volumetric process in which heat is generated within the material itself, and, consequently, it can be very rapid and selective. In this way, the microwave-susceptible material can absorb the energy embodied in the microwaves. Application of the microwave heating technique to a chemical process can lead to both a reduction in processing time as well as an increase in the production rate, which is obtained by enhancing the chemical reactions and results in energy saving. The synthesis and sintering of materials by means of microwave radiation has been used for more than 20 years, while, future challenges will be, among others, the development of processes that achieve lower greenhouse gas (e.g., CO 2 ) emissions and discover novel energy-saving catalyzed reactions. A natural choice in such efforts would be the combination of catalysis and microwave radiation. The main aim of this review is to give an overview of microwave applications in the heterogeneous catalysis, including the preparation of catalysts, as well as explore some selected microwave assisted catalytic reactions. The review is divided into three principal topics: (i) introduction to microwave chemistry and microwave materials processing; (ii) description of the loss mechanisms and microwave-specific effects in heterogeneous catalysis; and (iii) applications of microwaves in some selected chemical processes, including the preparation of heterogeneous catalysts.A chemical process is conventionally energized by means of conductive heating with a steam boiler as a typical heat source. Nevertheless, a large variety of other forms of energy can be applied for PI, including ultrasounds (for reactions or crystal nucleation), light (in photocatalytic processes), electric fields (in extraction or for orientation of molecules), or microwaves. The microwave (dielectric) heating of materials has been known for a long time, and microwave ovens have been developed from more than 60 years. The studies by Gedye et al. in 1986 and 1988 [3,4] opened a period of very intensive investigation of the microwave effects on chemical reactions in homogeneous systems. Since then, hundreds of research papers have been published, and research has also expanded toward heterogeneous catalysis and its related chemical processes. This review gives an overview of the application of microwave technology to heterogeneous catalysis, including various chemical processes, as well as to the preparation of catalysts.

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Amine‐functionalized mesoporous silica: A material capable of CO₂ adsorption and fast regeneration by microwave heating

Cited by 76 publications

References 35 publications

Adsorption of carbon dioxide by a novel amine impregnated ZSM-5/KIT-6 composite

Adsorption of carbon dioxide by a novel amine impregnated ZSM-5/KIT-6 composite

N‐doped porous carbons for CO₂ capture: Rational choice of N‐containing polymer with high phenyl density as precursor

Microwaves and Heterogeneous Catalysis: A Review on Selected Catalytic Processes

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Amine‐functionalized mesoporous silica: A material capable of CO2 adsorption and fast regeneration by microwave heating

Cited by 76 publications

References 35 publications

Adsorption of carbon dioxide by a novel amine impregnated ZSM-5/KIT-6 composite

Adsorption of carbon dioxide by a novel amine impregnated ZSM-5/KIT-6 composite

N‐doped porous carbons for CO2 capture: Rational choice of N‐containing polymer with high phenyl density as precursor

Microwaves and Heterogeneous Catalysis: A Review on Selected Catalytic Processes

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Amine‐functionalized mesoporous silica: A material capable of CO₂ adsorption and fast regeneration by microwave heating

N‐doped porous carbons for CO₂ capture: Rational choice of N‐containing polymer with high phenyl density as precursor