Importance of surface modification of γ-alumina in creating its nanostructured composites with zeolitic imidazolate framework ZIF-67

Liu, Yuanyuan; Gonçalves, Alexandre A. S.; Zhou, Yang

doi:10.1016/j.jcis.2018.05.008

Cited by 35 publications

(11 citation statements)

References 84 publications

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“…(b) The samples were treated at 150 °C for 8 h in a vacuum oven. 54,59 The final product is termed "Co-ZIF-67/M/A-2". (c) The samples were packed into a tube and heated at 300 °C under dried air for 180 min.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Co-Based Metal–Organic Framework Nanocrystal (Co-ZIF-67) for Adsorptive Desulfurization of Dibenzothiophene: Impact of the Preparation Approach on Structure Tuning

et al. 2020

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Metal−organic frameworks (MOFs) have attracted considerable attention for selective deep removal of refractory sulfur compounds from fuels. In this work, cobalt-based MOFs (nanocrystals of Co-ZIF-67) were successfully prepared to find a capable adsorbent for removal of dibenzothiophene (DBT) from fuel. This paper revealed the main importance of preparation conditions in adjusting the surface area and pore structure of Co-ZIF-67 crystals for DBT adsorption purposes. Several methods including XRD, SEM, TEM, FTIR, TGA, BET, BJH, and N 2 adsorption−desorption were used for characterization of the prepared adsorbents. Screening the adsorbents demonstrated the proper structure and performance of Co-ZIF-67/M nanocrystals synthesized by methanol at room temperature. A considerable promotion in DBT adsorption ability was further reached through exposing more active centers by surface activation. By employing activated Co-ZIF-67/M-A1 (S BET = 2478.8 m 2 /g), a maximum adsorption capacity of 550 mg/g was attained at T = 65 °C and M adsorbent /V fuel = 0.8 mg/mL, with an excellent reusability of the adsorbent in four repeated uses. The endothermic nature of DBT adsorption was verified by the positive influence of temperature. A good fitting of experimental data with Langmuir−Freundlich isotherm expressed a possible combination of monolayer and multilayer adsorption of DBT. The kinetic and mechanism studies were also conducted, and possible adsorption pathways were suggested.

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Section: Introductionmentioning

confidence: 99%

An Efficient Co-Based Metal–Organic Framework Nanocrystal (Co-ZIF-67) for Adsorptive Desulfurization of Dibenzothiophene: Impact of the Preparation Approach on Structure Tuning

et al. 2020

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“…ZIF-8 e ZIF-67 já foram usadas como adsorventes na remoção por adsorção de corantes aniônicos (alaranjado de metila, vermelho Congo), catiônicos (azul de metileno) e neutros (Rodamina B) de soluções aquosas (FAN et al, 2014;FENG et al, 2016;DU et al, 2017;LIU et al, 2018;TU et al, 2018;TRAN et al, 2019). Porém, ainda não foi verificada a influência da adsorção do corante Rodamina B nas estruturas.…”

Section: Introductionunclassified

Gaseificador de leito fluidizado borbulhante para conversão de biomassa

Loureiro¹,

Garrett²,

Silva³

2020

Engenharia No Século XXI - Volume 14

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“…Considerando a flexibilidade das ZIFs, a Rodamina B pode ter uma chance de entrar na estrutura (TRAN et al, 2019). ZIF-8 e ZIF-67 já foram usadas como adsorventes na remoção por adsorção de corantes aniônicos (alaranjado de metila, vermelho Congo), catiônicos (azul de metileno) e neutros (Rodamina B) de soluções aquosas (FAN et al, 2014;FENG et al, 2016;DU et al, 2017;LIU et al, 2018;TU et al, 2018;TRAN et al, 2019). Porém, ainda não foi verificada a influência da adsorção do corante Rodamina B nas estruturas.…”

Section: Introductionunclassified

As competências transversais nas disciplinas de projetos de instalações elétrica

Raduns¹,

Reimbold²,

Zampieri³

et al. 2020

Engenharia No Século XXI - Volume 14

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Importance of surface modification of γ-alumina in creating its nanostructured composites with zeolitic imidazolate framework ZIF-67

Cited by 35 publications

References 84 publications

An Efficient Co-Based Metal–Organic Framework Nanocrystal (Co-ZIF-67) for Adsorptive Desulfurization of Dibenzothiophene: Impact of the Preparation Approach on Structure Tuning

An Efficient Co-Based Metal–Organic Framework Nanocrystal (Co-ZIF-67) for Adsorptive Desulfurization of Dibenzothiophene: Impact of the Preparation Approach on Structure Tuning

Gaseificador de leito fluidizado borbulhante para conversão de biomassa

As competências transversais nas disciplinas de projetos de instalações elétrica

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