Deep desulfurization by selective adsorption on a heteroatoms zeolite prepared by secondary synthesis

Tang, Ke; Song, Lijuan; Duan, Linhai; Li, Xiu-qi; Gui, Jianzhou; Sun, Zhaolin

doi:10.1016/j.fuproc.2007.06.002

Cited by 43 publications

(24 citation statements)

References 10 publications

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“…The synthesis of [Ga]AlY zeolite could be referred to in ----- the literature [4,14,15]. The NH 4 Y zeolite was stirred with ammonium acetate solution (1 mol L −1 ).…”

Section: Adsorbent Preparationmentioning

confidence: 99%

Adsorptive desulfurization on a heteroatoms Y zeolite prepared by secondary synthesis

et al. 2010

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Gallium atoms have been introduced into the framework of Y zeolite by treating the zeolite with an aqueous solution of ammonium hexafluoro gallate. Desulfurization of various model fuels containing about 500 μg/g sulfur has been studied over the synthesized Y zeolite ([Ga]AlY). The sulfur adsorption capacity is 7.0, 17.4, 14.5, 16.9, 6.9 and 5.8 mg(S)/g adsorbent for thiophene, tetrahydrothiophene (THT), 4,6-dimethyldibenzothiophene (4,6-DMDBT), dibenzophiophene (DBT), benzothiophene (BT) and 4-methyldibenzothiophene (4-MDBT), respectively. The charges on the S atom in thiophene, THT, 4,6-DMDBT, DBT, BT and 4-MDBT, calculated using the density functional theory (DFT), are −0.159, −0.298, −0.214, −0.211, −0.193 and −0.188, respectively, implying that the S-M bond between the adsorption sites and thiophene is much weaker than that between the adsorption sites and THT, 4,6-DMDBT or DBT. The sulfur removal of FCC gasoline on [Ga]AlY is 68%.isomorphous substitution, DFT, model fuels, adsorptive desulfurization

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“…The synthesis of [Ga]AlY zeolite could be referred to in ----- the literature [4,14,15]. The NH 4 Y zeolite was stirred with ammonium acetate solution (1 mol L −1 ).…”

Section: Adsorbent Preparationmentioning

confidence: 99%

Adsorptive desulfurization on a heteroatoms Y zeolite prepared by secondary synthesis

et al. 2010

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“…Recently the researchers have developed several new processes for desulphurization which include biodesulphurization [5,6], desulphurization by precipitation [7,8], oxidative desulphurization [9][10][11] and adsorptive desulphurization [12]. Out of these the adsorptive desulphurization is gaining more popularity due to producing promising results while operating at ambient pressure and temperature.…”

Section: Introductionmentioning

confidence: 99%

Desulphurization of Liquid Fuels by Selective Adsorption Through Mineral Clays as Adsorbents

Shakirullah

Ahmad

et al. 2012

J. Chil. Chem. Soc.

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Different clays collected from local sources, including Kaolinite, Montmorollinte, Palygorskite and Vermiculite have been utilized for the selective adsorption of sulphur compounds prevailing in petroleum products i.e. crude oil, kerosene and diesel oil. The desulphurization activity of the clay was compared with the charcoal, ion exchange resins and with each other. Desulphurization was performed in batch operation at different time intervals i.e 1, 3 and 6 hrs at 40 o C temperature. Out of different adsorbents used, Kaoilinte exhibited the maximum desulphurization yield of 60 %, 76 % and 64 % at 6 hrs adsorption incase of crude oil, kerosene and diesel oil respectively. All the mineral clays adsorbents were characterized by surface area, SEM and EDX analysis. The FT-IR study of the desulphurized fractions revealed that mostly high molecular weight thioles and thiophenic compounds were depleted during adsorption process.

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“…Up to now, various adsorbents have been explored, these include microporous coordination polymers [8], activated carbons [9], resin [10], zeolite [11] and so on. However, to the best of our knowledge, few researches have been done on the molecular imprinted polymer (MIP) composites.…”

Section: Introductionmentioning

confidence: 99%

Preparation of molecularly imprinted polymer by surface imprinting technique and its performance for adsorption of dibenzothiophene

Zhou

Bian

et al. 2011

J of Separation Science

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The novel surface imprinted polymer composites (MIP/K(2)Ti(4)O(9)) were prepared using dibenzothiophene (DBT) as the template, 4-vinylpyridine as the functional monomer and potassium tetratitanate whisker (K(2)Ti(4)O(9)) as the carrier. The synthetic product was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. Parameters influencing DBT adsorption such as contact time, temperature and DBT initial concentration were investigated. The adsorption kinetics were evaluated with the pseudo-first-order and pseudo-second-order models, and the adsorption isotherms were fitted by Langmuir and Freundlich models. Selectivity experiments showed that MIP/K(2)Ti(4)O(9) exhibited excellent recognition capacity and binding affinity to DBT compared with the comparative substrates. MIP/K(2)Ti(4)O(9) could also be easily regenerated and reused ten times with only about 20% loss of adsorption capacity.

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Deep desulfurization by selective adsorption on a heteroatoms zeolite prepared by secondary synthesis

Cited by 43 publications

References 10 publications

Adsorptive desulfurization on a heteroatoms Y zeolite prepared by secondary synthesis

Adsorptive desulfurization on a heteroatoms Y zeolite prepared by secondary synthesis

Desulphurization of Liquid Fuels by Selective Adsorption Through Mineral Clays as Adsorbents

Preparation of molecularly imprinted polymer by surface imprinting technique and its performance for adsorption of dibenzothiophene

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