The high performance and mechanism of metal–organic frameworks and their composites in adsorptive desulfurization

Yang, Ke; Yan, Yu; Chen, Wen; Kang, Hongtao; Han, Yi; Zhang, Wenquan; Fan, Yafeng; Liu, Zhenxing

doi:10.1016/j.poly.2018.06.036

Cited by 25 publications

(20 citation statements)

References 81 publications

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“…The main qualities for an effective adsorbent include a simple synthesis route, adsorption at ambient conditions, high porosity, regeneration capability, and low environmental footprint. The removal of SCCs from fuels using adsorbents has been successfully tried, and some of the best performing and promising materials include materials such as activated carbons (ACs) [24][25][26][27][28][29][30][31][32][33], zeolites [34][35][36][37][38][39], mesoporous silica, alumina and related materials [40][41][42][43][44][45], and ion exchange resins [46,47].…”

Section: Desulfurization Methodsmentioning

confidence: 99%

Metal Organic Frameworks as Desulfurization Adsorbents of DBT and 4,6-DMDBT from Fuels

et al. 2019

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Ultradeep desulfurization of fuels is a method of enormous demand due to the generation of harmful compounds during the burning of sulfur-containing fuels, which are a major source of environmental pollution. Among the various desulfurization methods in application, adsorptive desulfurization (ADS) has low energy demand and is feasible to be employed at ambient conditions without the addition of chemicals. The most crucial factor for ADS application is the selection of the adsorbent, and, currently, a new family of porous materials, metal organic frameworks (MOFs), has proved to be very effective towards this direction. In the current review, applications of MOFs and their functionalized composites for ADS are presented and discussed, as well as the main desulfurization mechanisms reported for the removal of thiophenic compounds by various frameworks. Prospective methods regarding the further improvement of MOF’s desulfurization capability are also suggested.

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Section: Desulfurization Methodsmentioning

confidence: 99%

Metal Organic Frameworks as Desulfurization Adsorbents of DBT and 4,6-DMDBT from Fuels

et al. 2019

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“…According to the F-Test, for a confidence level of 95%, there is no significant difference between the two models. However, other researchers found out that pseudo-second order model is more appropriate to describe the uptake values obtained to ADS using activated carbon, zeolite, alumina and metal organic frameworks (MOFs) as adsorbents (Muzic et al 2010;Saleh 2018;Srivastav and Srivastava 2009;Yang et al 2018).…”

Section: Preliminary Desulfurization Of Olefin-free Synthetic Gasoline By Zeolite Powdermentioning

confidence: 99%

Copper-exchanged Y zeolites for gasoline deep-desulfurization

et al. 2019

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Adsorptive desulfurization is one of the most efficient methods to remove recalcitrant sulfur compounds from transportation fuels. Two π-complexation-based sorbents were studied for desulfurization of synthetic gasoline. The sorbents were obtained by ion exchanging Y zeolites with copper cations using different techniques, which includes liquid phase ion exchange (CuY1) and vapor phase ion exchange (CuY2). Preliminary kinetic and equilibrium experiments for sulfur adsorption in batch system showed that CuY1 has the greatest desulfurization capacity and selectivity. The best adsorbent, CuY1 pellet, had a dynamic adsorption and equilibrium capacity of 2.97 and 4.14 mg S/g for fixed bed column assays, respectively. Experimental data obtained to batch reactor and packed bed column have been interpreted by means of a pore diffusion model in which the mass balance to the pellets are emphasized. The model proposed was able to fit well to the experimental data. After the first thermal regeneration, the copper ion-exchanged zeolite presented a maximum recovery of 91.5%. The copper-exchanged zeolite (in pellet form) has shown good uptake rate and regenerability for desulfurization of synthetic gasoline.

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“…Studies in this field are driven by strict environmental regulations combined with the search for new clean sources of energy such as fuel cells, where sulfur species poison the reforming catalysts and electrode materials, thus causing a shortening of the lifetime of the fuel cell and an increase in the costs of energy. [2][3][4][5][6][7][8] Hydrogen sulfide (H 2 S) is a very toxic air pollution gas owing to corrosive and flammable characteristics. H 2 S is heavier than air, and then it has a high tendency to settle in low-lying and poorly ventilated areas.…”

Section: Introductionmentioning

confidence: 99%

“…The currently important aspect of environmental policy is the removal of sulfur‐containing species from the gaseous phase. Studies in this field are driven by strict environmental regulations combined with the search for new clean sources of energy such as fuel cells, where sulfur species poison the reforming catalysts and electrode materials, thus causing a shortening of the lifetime of the fuel cell and an increase in the costs of energy [2–8] . Hydrogen sulfide (H 2 S) is a very toxic air pollution gas owing to corrosive and flammable characteristics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nitrogen‐Doped CNT‐Based MOF Hybrids for Adsorptive Desulfurization of the Gas Stream

Saeedirad¹,

Rashidi²,

Daraee³

et al. 2020

ChemistrySelect

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In this research, hybrids of N-doped carbon nanotube (NCNT)based metal-organic framework (MOF) (NCNT/UiO-66 and NCNT/ZIF-67) were synthesized using hydrothermal method. The performance of synthesized hybrids was evaluated in hydrogen sulfide removal under a dynamic system at 30-50°C with 4500 ppm H 2 S concentration as inlet feed compared with neat UiO-66 and ZIF-67. NCNT/UiO-66 and NCNT/ZIF-67 were characterized using XRD, FTIR, FESEM, BET, and TGA. NCNT/ZIF-67 and NCNT/UiO-66 showed good adsorption capability for H 2 S with a capacity of 189.72 mg/g and 175.77 mg/g, respectively. The surface area of UiO-66 and ZIF-67 is (1351 and 1290 m 2 /g, respectively), and the addition of NCNT leads to the reduced surface area of nano adsorbent hybrids. Also, the performance of hybrids would not change after three cycles of the desulfurization process. These hybrids indicated the excellent potential for a desulfurization process.

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The high performance and mechanism of metal–organic frameworks and their composites in adsorptive desulfurization

Cited by 25 publications

References 81 publications

Metal Organic Frameworks as Desulfurization Adsorbents of DBT and 4,6-DMDBT from Fuels

Metal Organic Frameworks as Desulfurization Adsorbents of DBT and 4,6-DMDBT from Fuels

Copper-exchanged Y zeolites for gasoline deep-desulfurization

Synthesis of Nitrogen‐Doped CNT‐Based MOF Hybrids for Adsorptive Desulfurization of the Gas Stream

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