The use of microwave irradiation for zeolite regeneration in a continuous ethanol dewatering process

Pinchukova, Natalia A.; Voloshko, A.Yu.; Baumer, V. N.; Шишкин, Олег В.; Чебанов, Валентин А.

doi:10.1016/j.cep.2015.06.001

Cited by 11 publications

(3 citation statements)

References 23 publications

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“…9 Pinchukova et al found that microwave heating led to a 1.7-fold drop in energy consumption and a 10-fold reduction in processing time compared to conventional heating, as observed in laboratory experiments. 20 Li et al found that a char catalyst supported by Fe, when activated using microwaves, showed good stability during methane dry reforming. 21 Nanomaterials, which are well-known for their adjustable morphologies and large surface areas, have garnered extensive interest.…”

Section: ■ Introductionmentioning

confidence: 99%

Comparative Evaluation of Microwave Heating Performance across Structurally Diverse Tungsten Oxides

Ni,

Hojo,

Einaga

2024

J. Phys. Chem. C

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Microwave heating is an effective method for efficiently heating a target material, allowing the chemical reaction processes to proceed quickly. In catalytic reactions under microwave irradiation, it is essential to understand the relationship between the structure and physical properties of the material to be used as a catalyst and microwave heating. In this study, we focused on tungsten oxides, which absorb microwaves and convert them into heat, and we compared the microwave heating properties of tungsten oxides with different structures. The heating properties of tungsten oxides under microwave irradiation are highly dependent on their morphologies. WO3 nanoflakes with a monoclinic phase structure have a more rapidly heated surface than tungsten oxides with other morphologies. The heating characteristics of each tungsten oxide were consistent with the dielectric loss factor obtained by the perturbation method. Finite element analysis was used to gain a better understanding of the thermal distribution of materials during microwave irradiation.

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Section: ■ Introductionmentioning

confidence: 99%

Comparative Evaluation of Microwave Heating Performance across Structurally Diverse Tungsten Oxides

Ni,

Hojo,

Einaga

2024

J. Phys. Chem. C

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“…Dentro deste contexto, as zeólitas, materiais cristalinos microporosos surgem como uma alternativa promissora, por possuírem elevada capacidade de adsorção, podendo ser recuperadas e reutilizadas, tornando o processo economicamente viável e ambientalmente correto (MUNTHALI et al, 2015;FANG et al, 2016). A regeneração das zeólitas e sua posterior reutilização é um fator importante do ponto de vista econômico (industrial) e ambiental, pois possibilita a redução dos custos do tratamento e minimiza a geração de resíduos (LÓPEZ et al, 2011;SHAHBAZI et al, 2014;PINCHUKOVA et al, 2015;SUN et al, 2015;ZHANG et al, 2017). Já a troca iônica ocorre quando as zeólitas são colocadas em contato com uma solução aquosa das espécies de interesse numa temperatura selecionada (GAFFER et al, 2017 A capacidade de trocar seus cátions por outros cátions é de extrema importância como propriedade fundamental das zeólitas, pois a sua estrutura não é alterada.…”

Section: Introductionunclassified

Application of ZSM-5 and ZSM-12 Zeolites (In Sodium and Ammonical Forms) in the Barium Adsorption

Oliveira¹,

Souza²,

Souza³

et al. 2019

PTQ

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Heavy metals are often released into aquatic environments through various sources of industrial processes. However, conventional treatment technologies demand high cost and/or are inefficient for the recovery of these resources. In this context, the technical application of adsorption has been highlighted by its simplicity and practicality, especially when zeolites are used as adsorbents due to their excellent physicalchemical and textural properties, among them: their high availability, high selectivity and low cost. The present work characterized and evaluated the performance of Na-ZSM-5, Na-ZSM-12, NH4-ZSM-5 and NH4-ZSM-12 zeolites on barium adsorption as an alternative for the treatment of produced water. The Na-ZSM-5 and Na-ZSM-12 zeolites were synthesized by the hydrothermal method and subjected to ion exchange to obtain the ammoniacal form (NH4-ZSM-5 and NH4-ZSM-12). The characterization was done by: DRX, SEM, FRX and Adsorption / Desorption of Nitrogen, and barium concentration was measured by Atomic Absorption Spectroscopy (AAS). The adsorption studies were conducted under agitation at the times of 1, 6, 12 and 24 h. The results were promising for this application, because the Na-ZSM-5 zeolite presented the highest adsorption capacity, a fact related to its textural properties (volume and area of micropores).

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“…zeolites,108 activated carbon109 ) after use, where it has demonstrated great advantages over conventional heating methods owing to improved energy and time efficiency as a result of targeted heating. However, only recently microwave heating has been considered and investigated as a purification and/or activation technique for porous materials post-…”

mentioning

confidence: 99%

Evaluating the purification and activation of metal-organic frameworks from a technical and circular economy perspective

Woodliffe

Ferrari

Ahmed

et al. 2021

Coordination Chemistry Reviews

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The use of microwave irradiation for zeolite regeneration in a continuous ethanol dewatering process

Cited by 11 publications

References 23 publications

Comparative Evaluation of Microwave Heating Performance across Structurally Diverse Tungsten Oxides

Comparative Evaluation of Microwave Heating Performance across Structurally Diverse Tungsten Oxides

Application of ZSM-5 and ZSM-12 Zeolites (In Sodium and Ammonical Forms) in the Barium Adsorption

Evaluating the purification and activation of metal-organic frameworks from a technical and circular economy perspective

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