Adsorption Characteristics of Ion-Exchanged ZSM-5 Zeolites for CO2/N2 Mixtures

Katoh, Masahiro; Yoshikawa, Takushi; Tomonari, Takao; Katayama, Kazuyuki; Tomida, Tahei

doi:10.1006/jcis.2000.6795

Cited by 73 publications

(31 citation statements)

References 22 publications

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“…Hence, the zeolites such as ZSM-5 and M-ZSM-5 (M = Li + , Na + , K + , Rb + , Cs + ) which have small cations might penetrate more easily within channels, are able to interact more strongly with the CO 2 [19,33]. This is in agreement with the results from a study performed by Yamazaki et al [21].…”

Section: Influence Of the Polarizing Power Distribution Size And Nusupporting

confidence: 88%

“…More specifically, certain works have indicated that the basic strength of cationic zeolites containing the cations of Group 1A increases as following: Li + < Na + < K + < Rb + < Cs + [25,26]. Study of CO 2 adsorption on three zeolites, including natural hershelite-sodium chabazite (sodium aluminosilicate), clinoptilolite (sodium aluminosilicate) and clinoptilolite (potassium calcium sodium aluminosilicate), have also revealed that the capacities and rate of CO 2 adsorption of natural hershelite-sodium chabazite 19) and clinoptilolite (sodium aluminosilicate) are greater than clinoptilolite (potassium calcium sodium aluminosilicate) [27]. This difference of adsorption has been attributed to the higher basicity of the surface of natural hershelitesodium chabazite and clinoptilolite (sodium aluminosilicate) as compared to that of clinoptilolite (potassium calcium sodium aluminosilicate), resulting from a greater amount of sodium ions on the natural hershelite-sodium chabazite and clinoptilolite (sodium aluminosilicate).…”

Section: Influence Of the Structural Characteristics Of Zeolites On Tmentioning

confidence: 99%

“…This high affinity of zeolite NaA allows a better selectivity for CO 2 in the presence of N 2 and O 2 than NaX and NaY. Moreover, since the CO 2 can also interact with the pore wall of zeolites, the CO 2 adsorption might be limited by the size of zeolites pores at high pressures because the CO 2 -CO 2 interactions might prevent the adsorption of new molecules of CO 2 into the pore wall sites that are thus occupied by other molecules of CO 2 [12,19,21]. The shape of pores also seems to be important for the selective adsorption of CO 2 .…”

Section: Influence Of the Size Of Poresmentioning

confidence: 99%

“…−1 at 273-373 K (tables 1-3) [9][10][11][12][13][14][15][16][17][18][19][20]. The degree of irreversible adsorption of CO 2 on zeolites M-ZSM-5 (M = Li + , Na + , K + , Rb + , Cs + ) which has been evaluated under a pressure inferior to 6.7 × 10 −2 MPa, was less than 10% of the total adsorption [21].…”

Section: Introductionmentioning

confidence: 99%

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Advances in principal factors influencing carbon dioxide adsorption on zeolites

Bonenfant

Kharoune

Niquette

et al. 2008

Science and Technology of Advanced Materials

273

179

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We report the advances in the principal structural and experimental factors that might influence the carbon dioxide (CO 2 ) adsorption on natural and synthetic zeolites. The CO 2 adsorption is principally govern by the inclusion of exchangeable cations (countercations) within the cavities of zeolites, which induce basicity and an electric field, two key parameters for CO 2 adsorption. More specifically, these two parameters vary with diverse factors including the nature, distribution and number of exchangeable cations. The structure of framework also determines CO 2 adsorption on zeolites by influencing the basicity and electric field in their cavities. In fact, the basicity and electric field usually vary inversely with the Si/Al ratio. Furthermore, the CO 2 adsorption might be limited by the size of pores within zeolites and by the carbonates formation during the CO 2 chemisorption. The polarity of molecules adsorbed on zeolites represents a very important factor that influences their interaction with the electric field. The adsorbates that have the most great quadrupole moment such as the CO 2 , might interact strongly with the electric field of zeolites and this favors their adsorption. The pressure, temperature and presence of water seem to be the most important experimental conditions that influence the adsorption of CO 2 . The CO 2 adsorption increases with the gas phase pressure and decreases with the rise of temperature. The presence of water significantly decreases adsorption capacity of cationic zeolites by decreasing strength and heterogeneity of the electric field and by favoring the formation of bicarbonates. The optimization of the zeolites structural characteristics and the experimental conditions might enhance substantially their CO 2 adsorption capacity and thereby might give rise to the excellent adsorbents that may be used to capturing the industrial emissions of CO 2 .

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Section: Influence Of the Polarizing Power Distribution Size And Nusupporting

confidence: 88%

Section: Influence Of the Structural Characteristics Of Zeolites On Tmentioning

confidence: 99%

Section: Influence Of the Size Of Poresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Advances in principal factors influencing carbon dioxide adsorption on zeolites

Bonenfant

Kharoune

Niquette

et al. 2008

Science and Technology of Advanced Materials

273

179

View full text Add to dashboard Cite

show abstract

“…For example, a study on cation exchanged ZSM-5 zeolites showed the CO 2 adsorption capacity with the order of Li + > Cs + = Rb + > K + = Na + at 303 K (30 °C) and Rb + > K + > Na + > Li + > Cs + at 333 K (60 °C), both measured at 200 kPa (≈2 atm). [ 20 ] This is because the size of cation affects their distribution in the pores of zeolites while their polarity also affects the polarization of adsorbed Adv. Energy Mater.…”

Section: Zeolitesmentioning

confidence: 99%

The Potential Applications of Nanoporous Materials for the Adsorption, Separation, and Catalytic Conversion of Carbon Dioxide

Sneddon

Greenaway

Yiu

2014

Advanced Energy Materials

176

104

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Carbon capture and storage (CCS) technologies aiming at tackling CO2 emission have attracted much attention from scientists of various backgrounds. Most CCS systems require an efficient adsorbent to remove CO2 from sources such as fossil fuels (pre‐combustion) or flue gas from power generation (post‐combustion). Research on developing efficient adsorbents with a substantial capacity, good stability and recyclability has grown rapidly in the past decade. Because of their high surface area, highly porous structure, and high stability, various nanoporous materials have been viewed as good candidates for this challenging task. Here, recent developments in several classes of nanoporous materials, such as zeolites, metal organic frameworks (MOFs), mesoporous silicas, carbon nanotubes, and organic cage frameworks, for CCS are examined and potential future directions for CCS technology are discussed. The main criteria for a sustainable CO2 adsorbent for industrial use are also rationalized. Moreover, catalytic transformations of CO2 to other chemical species using nanoporous catalysts and their potential for large scale carbon capture and utilization (CCU) processes are also discussed. Application of CCU technologies avoids any potential hazard associated with CO2 reservoirs and allows possible recovery of some running cost for CO2 capture by manufacturing valuable chemicals.

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Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

Lakhi

Park

Joseph

et al. 2017

Chemistry An Asian Journal

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Mesoporous carbon nitrides (MCNs) with rod-shaped morphology and tunable nitrogen contents have been synthesized through a calcination-free method by using ethanol-washed mesoporous SBA-15 as templates at different carbonization temperatures. Carbon tetrachloride and ethylenediamine were used as the sources of carbon and nitrogen, respectively. The resulting MCN materials were characterized with low- and high-angle powder XRD, nitrogen adsorption, high-resolution (HR) SEM, HR-TEM, elemental analysis, X-ray photoelectron spectroscopy, and X-ray absorption near-edge structure techniques. The carbonization temperature plays a critical role in controlling not only the crystallinity, but also the nitrogen content and textural parameters of the samples, including specific surface area and specific pore volume. The nitrogen content of MCN decreases with a concomitant increase in specific surface area and specific pore volume, as well as the crystallinity of the samples, as the carbonization temperature is increased. The results also reveal that the structural order of the materials is retained, even after heat treatment at temperatures up to 900 °C with a significant reduction of the nitrogen content, but the structure is partially damaged at 1000 °C. The carbon dioxide adsorption capacity of these materials is not only dependent on the textural parameters, but also on the nitrogen content. The MCN prepared at 900 °C, which has an optimum BET surface area and nitrogen content, registers a carbon dioxide adsorption capacity of 20.1 mmol g at 273 K and 30 bar, which is much higher than that of mesoporous silica, MCN-1, activated carbon, and multiwalled carbon nanotubes.

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Adsorption Characteristics of Ion-Exchanged ZSM-5 Zeolites for CO2/N2 Mixtures

Cited by 73 publications

References 22 publications

Advances in principal factors influencing carbon dioxide adsorption on zeolites

Advances in principal factors influencing carbon dioxide adsorption on zeolites

The Potential Applications of Nanoporous Materials for the Adsorption, Separation, and Catalytic Conversion of Carbon Dioxide

Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

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