Synthesis, characterization and catalytic behavior of functionalized mesoporous SBA-15 with various organo-silanes

Çıtak, Alime; Erdem, Beyhan; Erdem, Sezer; Öksüzoğlu, Ramis Mustafa

doi:10.1016/j.jcis.2011.11.070

Cited by 52 publications

(30 citation statements)

References 21 publications

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“…As shown in Fig. 5, the TEM micrograph of SBA-15 silica clearly revealed the regular hexagonal array of one-dimensional channels with a typical honeycomb-like appearance of solid materials, suggesting the presence of highly ordered pore structure of the host material 29,33 . The prepared SBA-15-pr-guanindine catalyst showed a similar TEM micrograph to the non-functionalized SBA-15 silica, which further demonstrated that the ordered mesoporous framework was essentially retained after the incorporation of organic components into the SBA-15 support, which facilitates the reactant molecules access to the catalytic sites on the catalyst surface.…”

Section: Catalyst Characterizationmentioning

confidence: 91%

“…For comparison, the lowangle XRD pattern of SBA-15 silica is also provided. The two samples exhibited an intense peak at 0.91 due to 100 reflection, and two well-resolved weak peaks at 1.56 and 1.76 due to higher order 110 and 200 reflections 24,29 .…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…Besides, the characteristic XRD peaks tended to be decreased in intensity with the anchoring of guanidine base onto the SBA-15 support, revealing the reduction of pore size owing to the introduction of organic moieties into the support 29 . It is therefore possible to conclude that the primary mesoporous structure of SBA-15 silica was not destroyed after the incorporation of guanidine base.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…6. According to IUPAC classification, all the isotherms for the two samples could be classed as irreversible type IV isotherm with a H1-type hysteresis loop, which was the typical behaviors of highly ordered mesoporous structures with narrow pore size distributions 21,29 .…”

Section: Catalyst Characterizationmentioning

confidence: 99%

See 3 more Smart Citations

Mesoporous SBA-15 Silica-supported Diisopropylguanidine: an Efficient Solid Catalyst for Interesterification of Soybean Oil with Methyl Octanoate or Methyl Decanoate

Xie

2016

J. Oleo Sci.

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Section: Catalyst Characterizationmentioning

confidence: 91%

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Catalyst Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Mesoporous SBA-15 Silica-supported Diisopropylguanidine: an Efficient Solid Catalyst for Interesterification of Soybean Oil with Methyl Octanoate or Methyl Decanoate

Xie

2016

J. Oleo Sci.

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“…Synthesis of TPA/SBA-15-SO 3 H Sulfonic acid functionalized mesoporous silica (SBA-15-SO 3 H) was synthesized by using one-pot method, as described in the literature [9][10][11][12]. In a typical synthesis, 4 g of Pluronic P123 triblock copolymer was diluted in the acidic medium until a clear solution was obtained.…”

Section: Methodsmentioning

confidence: 99%

Preparation, Characterization and Catalytic Properties of SBA-15-SO₃H Supported Tungstophosphoric Acid for Esterification Reaction

Erdem

Çıtak

et al. 2017

Acta Phys. Pol. A

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SBA-15-SO3H supported tungstophosphoric acid (TPA, H3PW12O40) mesoporous materials were synthesized by impregnation of TPA into the hydrothermally synthesized SBA-15-SO3H and the catalytic performances were compared for the esterification reaction. The physical and chemical properties of the catalysts were characterized by XRD, SEM/EDX, FT-IR and N2 adsorption/desorption techniques. The characterization results show that TPA/SBA-15-SO3H retained the typical mesoporous structure of SBA-15-SO3H. The experimental results indicated that TPA/SBA-15-SO3H is a more efficient catalyst than SBA-15-SO3H for the esterification reaction. The higher activity of TPA/SBA-15-SO3H compared with that of SBA-15-SO3H was consistent with the material having the low pKa value, confirming that the esterification rate was mostly dependent on the acid strength of the additional functional groups of solid acid catalyst. Accordingly, the reason for the catalytic activity difference was simply explicated by the effect of TPA, having low pKa value, affecting the pore structure and the total acidity.

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Development and characterisation research on SnO₂‐Al₂O₃‐NiO/SO₄²⁻ catalysed epoxidation of soybean oil under hydraulic cavitation

Zhang

Cheng

Chen

et al. 2022

Applied Organom Chemis

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A new hydraulic cavitation‐assisted epoxidation scheme was developed by using a cost‐effective, environment‐friendly, and recyclable solid‐acid catalyst. SnO2‐Al2O3‐NiO/SO42− solid‐acid catalysts were prepared using co‐precipitation and impregnation methods, which were characterised by several techniques and analysed using the Hammett acidity function. The prepared catalysts were found to have a large specific surface area (53.95 m2/g) and abundant acid sites (94 μmol/g). Exhibits higher stability and more effective catalytic activity compared with H2SO4. Under the optimal reaction conditions, the relative conversion to oxirane of 86.97% was obtained in only 1.5 h of reaction time. Moreover, the catalyst could be easily separated and showed satisfactory catalytic activity after five reuse cycles. The current work has clearly demonstrated that the application of hydraulic cavitation technology to the solid‐acid‐catalysed epoxidation reaction of soybean oil can shorten the reaction time, increase the relative conversion to oxirane, and be a viable method with promising applications.

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Synthesis, characterization and catalytic behavior of functionalized mesoporous SBA-15 with various organo-silanes

Cited by 52 publications

References 21 publications

Mesoporous SBA-15 Silica-supported Diisopropylguanidine: an Efficient Solid Catalyst for Interesterification of Soybean Oil with Methyl Octanoate or Methyl Decanoate

Mesoporous SBA-15 Silica-supported Diisopropylguanidine: an Efficient Solid Catalyst for Interesterification of Soybean Oil with Methyl Octanoate or Methyl Decanoate

Preparation, Characterization and Catalytic Properties of SBA-15-SO₃H Supported Tungstophosphoric Acid for Esterification Reaction

Development and characterisation research on SnO₂‐Al₂O₃‐NiO/SO₄²⁻ catalysed epoxidation of soybean oil under hydraulic cavitation

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Synthesis, characterization and catalytic behavior of functionalized mesoporous SBA-15 with various organo-silanes

Cited by 52 publications

References 21 publications

Mesoporous SBA-15 Silica-supported Diisopropylguanidine: an Efficient Solid Catalyst for Interesterification of Soybean Oil with Methyl Octanoate or Methyl Decanoate

Mesoporous SBA-15 Silica-supported Diisopropylguanidine: an Efficient Solid Catalyst for Interesterification of Soybean Oil with Methyl Octanoate or Methyl Decanoate

Preparation, Characterization and Catalytic Properties of SBA-15-SO3H Supported Tungstophosphoric Acid for Esterification Reaction

Development and characterisation research on SnO2‐Al2O3‐NiO/SO42− catalysed epoxidation of soybean oil under hydraulic cavitation

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Product

Resources

About

Preparation, Characterization and Catalytic Properties of SBA-15-SO₃H Supported Tungstophosphoric Acid for Esterification Reaction

Development and characterisation research on SnO₂‐Al₂O₃‐NiO/SO₄²⁻ catalysed epoxidation of soybean oil under hydraulic cavitation