Characterization of adsorptive and hydrophobic properties of silicalite-1, ZSM-5, TS-1 and Beta zeolites by TPD techniques

Serrano, David; Calleja, Guillermo; Botas, Juan A.; Gutiérrez, Francisco J.

doi:10.1016/j.seppur.2006.08.013

Cited by 105 publications

(36 citation statements)

References 15 publications

(17 reference statements)

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“…Serrano et al [94] used the TPD method to determine the sorption capacities towards toluene, isopentane, and ethanol of synthetic zeolites synthesized from chemical reagents; sorption capacities were determined to be in the range 25-75 mg/g. The zeolites synthesized by Serrano exhibited high purity and specific surface area.…”

Section: Sorption Of Volatile Petroleum Derivativesmentioning

confidence: 99%

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

et al. 2017

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Environmental pollution with petroleum products has become a major problem worldwide, and is a consequence of industrial growth. The development of sustainable methods for the removal of petroleum substances and their derivatives from aquatic and terrestrial environments and from air has therefore become extremely important today. Advanced technologies and materials dedicated to this purpose are relatively expensive; sorption methods involving mineral sorbents are therefore popular and are widely described in the scientific literature. Mineral materials are easily available, low-cost, universal adsorbents and have a number of properties that make them suitable for the removal of petroleum substances. This review describes recent works on the use of natural, synthetic and modified mineral adsorbents for the removal of petroleum substances and their derivatives from roads, water and air.

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Section: Sorption Of Volatile Petroleum Derivativesmentioning

confidence: 99%

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

et al. 2017

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“…In the conventional TPD measurements, water has been used as an adsorbate for the determination of the hydrophobic property [26]. In our TPD experiments, however, NH 3 instead of water was used as a polar adsorbate molecule, because water was condensed at low temperature.…”

Section: Hydrophobic Property Of the Catalystsmentioning

confidence: 99%

Epoxidation of Propylene with Hydrogen Peroxide Over TS-1 Catalyst Synthesized in the Presence of Polystyrene

et al. 2008

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Titanium silicalite-1 (TS-1) catalyst was synthesized in the presence of polystyrene (PS) particles (denoted as TS-1_PS catalyst) for use in the epoxidation of propylene with hydrogen peroxide. For the purpose of comparison, TS-1 catalyst was also synthesized by a conventional method (in the absence of polystyrene particles). In the epoxidation of propylene, the TS-1_PS catalyst showed a higher conversion of hydrogen peroxide and a higher selectivity for propylene oxide (PO) than the TS-1 catalyst. Consequently, the TS-1_PS catalyst showed a higher yield for PO than the TS-1 catalyst. Characterization results showed that the high catalytic performance of TS-1_PS was attributed to the enhanced hydrophobic property of the catalyst and the suppressed formation of anatase TiO 2 in the catalyst.

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“…Zeolites have been widely used in industry as shape-selective catalysts and adsorbents due to their specific features (hydrothermal stability and many active sites and so forth) [1,2]. Their intricate channels and pores contribute to the development of the intracrystalline surface area at which a large number of catalytic and adsorptive sites can be generated [3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and hydrophobic adsorption properties of microporous/mesoporous hybrid materials

Qiao

et al. 2009

Journal of Hazardous Materials

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a b s t r a c tHybrid materials of silicalite-1 (Sil-1)-coated SBA-15 particles (MSs) have been successfully synthesized by crystallization process under hydrothermal conditions. These MSs materials were characterized by X-ray diffraction, nitrogen adsorption/desorption and TEM techniques, which illustrated that the silicalite-1-coated SBA-15 particles were successfully prepared and had large pore volume and hierarchical pore size distribution. Further experimental studies indicated that longer crystallization time under basic condition caused the mesostructure of SBA-15 materials to collapse destructively and higher calcination temperature tended to disrupt the long-range mesoscopic order while they had little influence on the phase of microcrystalline silicalite-1 zeolite. The resultant MSs materials were investigated by estimating dynamic adsorption capacity under dry and wet conditions to evaluate their adsorptive and hydrophobic properties. The hydrophobicity index (HI) value followed the sequence of silicalite-1 > MSs > SBA-15, which revealed that the SBA-15 particles coated with the silicalite-1 seeds enhanced the surface hydrophobicity, and also were consistent with FTIR results. Our studies show that MSs materials combined the advantages of the ordered mesoporous material (high adsorptive capacity, large pore volume) and silicalite-1 zeolite (super-hydrophobic property, high hydrothermal stability), and the presence of micropores directly led to an increase in the dynamic adsorption capacity of benzene under dry and wet conditions.

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Characterization of adsorptive and hydrophobic properties of silicalite-1, ZSM-5, TS-1 and Beta zeolites by TPD techniques

Cited by 105 publications

References 15 publications

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

Epoxidation of Propylene with Hydrogen Peroxide Over TS-1 Catalyst Synthesized in the Presence of Polystyrene

Synthesis and hydrophobic adsorption properties of microporous/mesoporous hybrid materials

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