Deep adsorptive desulfurization over Cu, Ce bimetal ion-exchanged Y-typed molecule sieve

Song, Hua; Chang, Youxin; Song, Hualin

doi:10.1007/s10450-015-9731-3

Cited by 29 publications

(25 citation statements)

References 42 publications

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“…The acidic sites are generally classied into three types including weak acidity (136 C), moderate acidity (200À300 C), and strong acidity (>300 C). [55][56][57] As shown in Fig. 2b, three clear peaks can also be observed.…”

Section: Resultsmentioning

confidence: 99%

Enhanced adsorption performance for aromatic sulfur compounds over a hierarchical structured AgX zeolite

Jiang

Zheng

et al. 2021

Environ. Sci.: Atmos.

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Section: Resultsmentioning

confidence: 99%

Enhanced adsorption performance for aromatic sulfur compounds over a hierarchical structured AgX zeolite

Jiang

Zheng

et al. 2021

Environ. Sci.: Atmos.

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“…3 Shan et al developed a bimetallic CuCeY zeolite that combines both adsorption modes, π-complexation and direct (S−M) σ bonds, resulting in improved adsorption performance of benzothiophene (BT) in the presence of aromatics. 25,26 Tian and co-workers tested the adsorption performance of Ce exchanged mesoporous Y and found that mesoporosity decreased the mass transfer limitations and, as a result, improved the desulfurization performance of thiophene (TP) and BT. 27 Lee et al tested Cu and Ce exchanged mesoporous zeolites for BT and DBT adsorption and found that Cu adsorbs via a π-complexation, whereas Ce adsorbs via both πcomplexation and direct interaction with the metal (S−M).…”

Section: Introductionmentioning

confidence: 99%

Understanding the Role of Rare Earths in Zeolite Y on the Removal of Sulfur from Hydrocarbon Fuels

et al. 2021

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Adsorptive desulfurization is a promising alternative to hydrodesulfurization for minimizing harmful sulfur emissions from hydrocarbon fuels. Cu in Y zeolite (CuY) has shown effective sulfur adsorption, especially when paired with Ce (CuCeY). This study explores other rare earths (REs), including La, Sm, and Nd, in RE and CuRE Y and mesoporous Y (SAY) zeolites for the adsorption of benzothiophene (BT) and dibenzothiophene (DBT). Metal loadings on the zeolites were quantified by using inductively coupled plasma optic emission spectroscopy (ICP-EOS) and X-ray fluorescence (XRF). Characteristic adsorption modes, such as σ-bonding and π-complexation, were observed by using Fourier-transform infrared spectroscopy (FTIR). X-ray diffraction (XRD) Rietveld refinement determined that RE ions prefer the sodalite cages of Y zeolite, while Cu occupies supercage sites. Ce showed the strongest synergy with Cu compared to the other REs and the highest adsorption capacity. The results of this study provide insight into the role of RE exchanged Y on sulfur adsorption.

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“…Among these technologies, SADS process is regarded as a promising “zero‐sulfur” technology owing to its mild conditions, good desulfurization performance, low cost, and minimal octane loss . So far, various types of adsorbents for SADS have been reported . Among these adsorbents, ion exchanged Y zeolites have been considered as a kind of promising adsorbents due to their high surface area, size‐selective adsorption capacity and good thermal stabilities …”

Section: Introductionmentioning

confidence: 99%

Effect of Content of Cerium Ion on Brönsted‐Acid‐Catalyzed Reaction of Thiophene over CeY Zeolite Studied by In Situ FTIR Spectroscopy

Qin

et al. 2019

ChemistrySelect

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With NaY zeolite as the raw material, CeY zeolites with different content of Ce ions were prepared by liquid phase ion exchange (LPIE) method. Their chemical compositions were measured by X-ray fluorescence spectrometry (XRF) and in situ Fourier transform infrared spectroscopy (FTIR) techniques. Temperatureprogrammed desorption of ammonia (NH 3 -TPD) and FTIR spectra of pyridine (Py-FTIR) techniques were used to characterize acidity of CeY zeolites. With thiophene (TP, C 4 H 4 S) as probe molecule, adsorption and reaction of TP over CeY zeolites were researched by using in situ FTIR spectroscopy. Finally, it can be found that activity of Brönsted(B)-acid-catalyzed reaction of TP firstly increases and then has little change with the increase of concentration of Ce(NO 3 ) 3 solution (c), while increases with the increase of the exchange times by a combination of adsorption and reaction of TP over CeY zeolite with acidity of CeY zeolite and with location of Ce ion in CeY zeolite. Especially, the sulfurmetal (SÀ M) interaction between TP and Ce ion located in the supercage exhibits more influence than B-acid-catalyzed reaction of TP on adsorption desulfurization of CeY zeolite.[a] Z.

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Deep adsorptive desulfurization over Cu, Ce bimetal ion-exchanged Y-typed molecule sieve

Cited by 29 publications

References 42 publications

Enhanced adsorption performance for aromatic sulfur compounds over a hierarchical structured AgX zeolite

Enhanced adsorption performance for aromatic sulfur compounds over a hierarchical structured AgX zeolite

Understanding the Role of Rare Earths in Zeolite Y on the Removal of Sulfur from Hydrocarbon Fuels

Effect of Content of Cerium Ion on Brönsted‐Acid‐Catalyzed Reaction of Thiophene over CeY Zeolite Studied by In Situ FTIR Spectroscopy

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