Synthesis of ZSM-5 with high sodium content for CO2 adsorption

Frantz, Tuanny Santos; Augusto-Ruiz, Walter; Rosa, Claudio; Mortola, Vanessa Bongalhardo

doi:10.1016/j.micromeso.2015.10.022

Cited by 55 publications

(19 citation statements)

References 30 publications

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“…Then the sample was purged with He in order to eliminate the residual 16 O 2 . After switching from the He to 18 O 2 (the right of the shadow), the C 16 O 2 concentration first jumped because K-ZSM-5-25 is prone to adsorb CO 2 29 , and then decreased rapidly. Comparatively, the products of C 18 O 2 and C 16 O 18 O increased gradually and reached a stable level.…”

Section: Discussionmentioning

confidence: 99%

Plausibility of potassium ion-exchanged ZSM-5 as soot combustion catalysts

Liu

Shi

et al. 2017

Sci Rep

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Potassium (K) ion-exchanged ZSM-5 zeolites were investigated for catalytic soot combustion. X-ray absorption fine-structure (XAFS), Raman, in situ IR and NH3-temperature programmed desorption (NH3-TPD) confirmed the location of K+ at the ion-exchanged sites. Temperature-programmed oxidation (TPO) reactions showed that K-ZSM-5 decreased ignition tempeatures of soot combustion and increased selectivity to CO2. The improved activity for soot combustion by increasing K+-exchanged amounts via decreasing the Si/Al ratio reinforced the K+ ions participating in soot combustion. 18O2 isotopic isothermal reactions suggested the activation of gaseous oxygen by the K+ ions. This demonstrated a new appliction of alkali metal exchanged zeolites and the strategy for enhancement of catalytic soot combustion activity.

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Section: Discussionmentioning

confidence: 99%

Plausibility of potassium ion-exchanged ZSM-5 as soot combustion catalysts

Liu

Shi

et al. 2017

Sci Rep

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“…It is a general trend that zeolites with a low Si/Al ratio are promising CO 2 adsorbents because they have a higher number of extra-framework cations that can promote adsorption by charge-quadrupole interactions. 64 In contrast, different trends are observed in terms of the sort of cation present. Some researchers find a more thermodynamic influence (i.e., stronger or weaker basicity) 65 whilst others report kinetic influences as well.…”

Section: Physical Adsorbents For Selective Co 2 Capturementioning

confidence: 99%

A search for selectivity to enable CO₂ capture with porous adsorbents

Oschatz

Antonietti

2018

Energy Environ. Sci.

504

364

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“…The presence of a band at 3400 cm −1 was related to hydrogen bonding stretching vibration due to the existence of adsorbed water. Bands at 800 and 1000 cm −1 were related to the internal asymmetric stretching vibration of Si-O-Si or Si-O-Al, and the bands at 450, 550 and 1230 cm −1 were characteristic of ZSM-5 structure [94]. Among them, the band at 550 cm −1 is related to a structure of the double five-membered rings of the pintails zeolites [95].…”

Section: Fourier-transform Infrared Spectroscopy-ftirmentioning

confidence: 96%

Comparative study using different external sources of aluminum on the zeolites synthesis from rice husk ash

Klunk

Das

Dasgupta

et al. 2020

Mater. Res. Express

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Rice husk is considered as a waste in the rice industry but is proficient in manufacturing different materials, such as zeolites, which is produced in large quantities all over the world, for example in Brazil. Zeolite is an adsorbent support material, which can be synthesized from rice husk ash (RHA) with external sources of aluminium (ESA). The scientific community has been conducting several measures to minimize the environmental impacts caused by greenhouse gases. Several mitigation processes are presently investigated, which includes carbon dioxide injections into adsorbent materials (e.g. zeolites). The efficiency of this technology involves a zeolitic material with high crystallinity and high concentrations of SiO 2 and Al 2 O 3 (aluminosilicates). In the present work, zeolites have been synthesized from rice husk ash (SiO 2 source) and external aluminium sources (Al 2 O 3 -alumina, gibbsite and metakaolin) to fulfill that purpose. With the aid of XRF, XRD, SEM/ EDS and FTIR techniques, the zeolitic material was characterized in two distinct crystalline phases: Mordenite and ZSM-5. The synthesis was carried out by the ideal addition of ESA (2.5 g) to RHA. According to the literature, the zeolitic materials formed by the mixture of Mordenite and ZSM-5 can be availed for gas separation and greenhouse gas storage.

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Synthesis of ZSM-5 with high sodium content for CO2 adsorption

Cited by 55 publications

References 30 publications

Plausibility of potassium ion-exchanged ZSM-5 as soot combustion catalysts

Plausibility of potassium ion-exchanged ZSM-5 as soot combustion catalysts

A search for selectivity to enable CO₂ capture with porous adsorbents

Comparative study using different external sources of aluminum on the zeolites synthesis from rice husk ash

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Synthesis of ZSM-5 with high sodium content for CO2 adsorption

Cited by 55 publications

References 30 publications

Plausibility of potassium ion-exchanged ZSM-5 as soot combustion catalysts

Plausibility of potassium ion-exchanged ZSM-5 as soot combustion catalysts

A search for selectivity to enable CO2 capture with porous adsorbents

Comparative study using different external sources of aluminum on the zeolites synthesis from rice husk ash

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A search for selectivity to enable CO₂ capture with porous adsorbents