CO2 adsorption on polyethylenimine-modified ZSM-5 zeolite synthesized from rice husk ash

Wang, Yisong; Du, Tao; Qiu, Ziyang; Song, Yanli; Che, Shuai; Fang, Xin

doi:10.1016/j.matchemphys.2017.12.040

Cited by 65 publications

(33 citation statements)

References 40 publications

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“…There are 200 types of synthetic zeolites, for example: A, X, Y, L, F, Mordenite, ZSM-5, ZSM-11 etc [42,49]. Zeolites can be used to mitigate the environmental impacts caused by greenhouse gas emissions [20,21]. These synthetic zeolites have larger porosity compared to other types of zeolites, which provides them a wide variety of applications.…”

Section: Zeolitesmentioning

confidence: 99%

“…The proposed methodology was based on Wang et al (2018) [20] and the aim was to develop a synthesis process for the production of zeolites from rice husk ash. The methodology involves a few reactions in alkaline conditions (NaOH − 3.5 mol l −1 ) with RHA.…”

Section: Synthesis Of Zeolites From Rice Husk Ashmentioning

confidence: 99%

“…These additions assist to identify the suitable sources to approach the ideal ratio during synthesis of zeolites. The synthesized zeolites can be used for the adsorption of carbon dioxide (CO 2 ) to mitigate the environmental impacts caused by greenhouse gas emissions [20][21][22][23][24]. The wide application of zeolites for CO 2 adsorption is enabled due to larger pore cavities compared to the molecular diameter of carbon dioxide [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Zeolitesmentioning

confidence: 99%

Section: Synthesis Of Zeolites From Rice Husk Ashmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…Modified adsorbents are very capable of increasing the adsorption capacity and selectivity of CO 2 and decreasing energy consumption of regeneration. Because of less corrosion and environmental pollutions compared to amine solutions, they are also affordable . Activated alumina is a very porous substance with a high adsorption capacity that can adsorb all kinds of components in the liquid and gas without changing in their structural form.…”

Section: Introductionmentioning

confidence: 99%

“…Because of less corrosion and environmental pollutions compared to amine solutions, they are also affordable. 5,[19][20][21][22][23] Activated alumina is a very porous substance with a high adsorption capacity that can adsorb all kinds of components in the liquid and gas without changing in their structural form. Activated alumina has features like the proper price, excellent mechanical and thermal resistance, and high surface area.…”

Section: Introductionmentioning

confidence: 99%

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling

2018

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In this research, the CO2 adsorption process was studied using modified activated alumina with a piperazine solution as a novel sorbent. Activated alumina was modified with a piperazine solution concentration in the range of 1–4 wt%. Adsorption experiments were performed to evaluate the operating parameters, including CO2 pressure in the range of 2–8 bar, adsorbent dosage in the range of 0.5–2 g, temperature in the range of 25–85°C and adsorbent mesh in the range of 200–800 micron. Maximum adsorption capacity (222.01 mg CO2/g modified activated alumina) was determined at a temperature of 25°C, pressure of 8 bar, and adsorbent dosage of 0.5 g, with a piperazine solution of 2 wt%. The results of the experiments showed that the rate of CO2 adsorption increases with increasing pressure and decreasing temperature. The Freundlich isotherm model with correlation coefficient of 0.999 was found to be the best for fitting the CO2 adsorption isotherm data. The kinetic study also indicated that the Elovich model fits the experimental kinetic data well. The negative values of Gibbs free energy change (ΔG°) and enthalpy change (ΔH°) show that the reaction is spontaneous in nature and exothermic. The negative value of entropy change (ΔS°) shows a reduction in the irregularity of the adsorption process. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Formate dehydrogenase mimic nanoenzyme embedded cryogel for CO₂ conversion

Biçen Ünlüer,

Sümbelli,

Hür

et al. 2023

Polymers for Advanced Techs

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CO2 conversion to formic acid in a single‐step reaction was investigated by incorporating MoSe2 nanoparticles into a cryogel‐based reactor system, resulting in a formate dehydrogenase (FDH) enzyme‐mimicking system. MoSe2 nanoparticles were synthesized via the microwave synthesis method, and they took part as the cofactor of the enzymatic system. Following, in combination with MACys‐Ru(bipyr)2‐MACys, MoSe2 nanoparticles were used as the cofactor of the conversion reaction in the MACys‐Ru(bipyr)2‐MACys‐co‐p(HEMA) cryogel column‐based reactor system. Synthesized nanoparticles were characterized by Fourier transformed infrared spectroscopy, field emission‐scanning electron microscopy, transmission electron microscopy, and energy dispersive x‐ray spectroscopy. The conversion reaction was monitored using high‐pressure liquid chromatography, and the parameters affecting the conversion yield (e.g., pH change and reusability of the reactor) were investigated. The results showed that the obtained mimic FDH‐based CO2 conversion column system worked like a reactor in the conversion of CO2 into formic acid. Besides, the developed cryogenic reactor provided a reusable single‐step conversion reaction with a high yield at room temperature in mild conditions.

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CO2 adsorption on polyethylenimine-modified ZSM-5 zeolite synthesized from rice husk ash

Cited by 65 publications

References 40 publications

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

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

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling

Formate dehydrogenase mimic nanoenzyme embedded cryogel for CO₂ conversion

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CO2 adsorption on polyethylenimine-modified ZSM-5 zeolite synthesized from rice husk ash

Cited by 65 publications

References 40 publications

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

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

Piperazine‐modified activated alumina as a novel promising candidate for CO2 capture: experimental and modeling

Formate dehydrogenase mimic nanoenzyme embedded cryogel for CO2 conversion

Contact Info

Product

Resources

About

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling

Formate dehydrogenase mimic nanoenzyme embedded cryogel for CO₂ conversion