Mesoporous silica nanoparticles for high capacity adsorptive desulfurization

Palomino, Jessica M.; Tran, Dat T.; Hauser, Jesse L.; Dong, Hong; Oliver, Scott R. J.

doi:10.1039/c4ta02570a

Cited by 89 publications

(53 citation statements)

References 27 publications

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“…The larger adsorption capacities shown in Fig. 11 for DBT and DMDBT compared to BT are similar to the trend seen with other sorbents, and are explained by the higher electron density of the sulfur on DBT and DMDBT [18]. DMDBT has significant steric hindrance around the sulfur atom, which would explain its slightly lower capacity than the non-sterically hindered DBT.…”

Section: Mechanism Studiessupporting

confidence: 66%

“…24-hour adsorption capacity studies were performed for the most optimized material, silver loaded DDA-15. The sulfur concentration reduced from 734ppm w S to 396ppm w S. The results are presented in Table 4 and compared to another material prepared by our lab, Ag-MSN (mesoporous silica nanoparticles): 80 nm diameter nanoparticles of MCM-41 loaded with 20 wt.% Ag [18]. Silver loaded DDA-15 has 84% the adsorption capacity towards JP-8 compared to Ag-MSN, but does so with far less silver loading.…”

Section: Jp-8 Testingmentioning

confidence: 95%

“…The rinsing with diethyl ether also likely removed physisorbed hydrocarons, which are also adsorbed but in lower amounts than the organosulfur compounds (e.g. naphthalene [18]). …”

Section: Methodsmentioning

confidence: 99%

“…The procedure is similar to that we have previously published [18]. All model fuel tests were performed with a 50:1 fuel to sorbent weight ratio.…”

Section: Model Fuel and Jp-8 Testingmentioning

confidence: 99%

“…The more efficiently that the silver is used, the more cost effective the sorbent. Ag-MSN is optimized to 20 wt.% Ag [18] compared to only 11 wt.% for DDA-15. Further, as shown in Table 4 and highlighted in Fig.…”

Section: Jp-8 Testingmentioning

confidence: 99%

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Zirconia-silica based mesoporous desulfurization adsorbents

Palomino

Tran

Kareh

et al. 2015

Journal of Power Sources

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h i g h l i g h t sMesoporous silicate sorbent materials templated by long-chain primary alkylamine. Excellent saturation adsorption capacity (39.4 mgS/g) and silver efficiency (1.21 molS/molAg). 86% of initial capacity towards model fuel maintained after solvent regeneration. t r a c tWe report a series of mesoporous silicate sorbent materials templated by long-chain primary alkylamines that display record level of desulfurization of the jet fuel JP-8. Pure silica frameworks and those with a Si:Zr synthesis molar ratio ranging from 44:1 to 11:1 were investigated. The optimum sorbent was identified as dodecylamine-templated silica-zirconia synthesized from a gel with Si:Zr molar ratio of 15:1. With an optimized silver loading of 11 wt.%, a saturation adsorption capacity of 39.4 mgS g À1 and a silver efficiency of 1.21 molS mol Ag À1 were observed for JP-8. This sorbent displayed exceptional regenerability, maintaining 86% of its initial capacity in model fuel after solvent regeneration with diethyl ether. Low-cost, portable and reusable sorbents for the desulfurization of JP-8 jet fuel are needed to make solid oxide fuel cells (SOFCs) a reality for military power needs. SOFCs require ultra-low sulfur content fuel, which traditional desulfurization methods cannot achieve.

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Section: Mechanism Studiessupporting

confidence: 66%

Section: Jp-8 Testingmentioning

confidence: 95%

“…The rinsing with diethyl ether also likely removed physisorbed hydrocarons, which are also adsorbed but in lower amounts than the organosulfur compounds (e.g. naphthalene [18]). …”

Section: Methodsmentioning

confidence: 99%

“…The procedure is similar to that we have previously published [18]. All model fuel tests were performed with a 50:1 fuel to sorbent weight ratio.…”

Section: Model Fuel and Jp-8 Testingmentioning

confidence: 99%

Section: Jp-8 Testingmentioning

confidence: 99%

See 3 more Smart Citations

Zirconia-silica based mesoporous desulfurization adsorbents

Palomino

Tran

Kareh

et al. 2015

Journal of Power Sources

Self Cite

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Heterogeneous Catalytic Desulfurization of Liquid Fuels

Faria,

Viana,

Granadeiro

et al. 2024

Catalysis for a Sustainable Environment

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Efficient adsorptive desulfurization by task‐specific porous organic polymers

Jin

Yang

et al. 2016

AIChE Journal

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A task-specific mesoporous organic polymer (TSPOP) with unique features like good porosity and rich aromatic phenyl groups was facilely made and utilized as a promising adsorptive desulfurization absorbent for the first time. The material exhibits an efficient saturated adsorption of dibenzothiophene (DBT), as high as 111.1 mg g 21. In addition, the intrinsic mesoporous skeleton of TSPOP gave rise to a facile incorporation of uniform Ag(I) species inside the network which facilitated the uptake of organosulfur compounds. A significantly higher saturated DBT adsorption for Ag(I)-loaded TSPOP reaches 203.7 mg g 21 via a multiple-site interaction. A detailed model study based on the density functional calculation provides a deeper understanding of the origin of this high activity. In addition to the p-p stacking between DBT and phenyl rings, there exists an additional p-complexation adsorption with Ag(I) ions, thus, significantly improving the DBT capture performance.

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Mesoporous silica nanoparticles for high capacity adsorptive desulfurization

Abstract: Silver-loaded mesoporous silica nanoparticles were applied for the first time to the desulfurization of JP-8 fuel with record breaking performance.

Cited by 89 publications

References 27 publications

Zirconia-silica based mesoporous desulfurization adsorbents

Zirconia-silica based mesoporous desulfurization adsorbents

Heterogeneous Catalytic Desulfurization of Liquid Fuels

Efficient adsorptive desulfurization by task‐specific porous organic polymers

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