α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS

Ayşegül Arikan Asan; Halit Levent Hoşgün

doi:10.31796/ogummf.1937280

TR EN

FARKLI YÜZEY AKTİF MADDELER KULLANILARAK SENTEZLENEN SİLİKALARIN α-TOKOFEROL ADSORPSİYON KAPASİTELERİNİN DEĞERLENDİRİLMESİ

Abstract

α, β, γ ve –δ-tokoferoller ve bunların tokotrionellerini içeren E vitamini, antioksidan özelliklere sahip yağda çözünen bir vitamindir. α-tokoferolün adsorpsiyonu, çeşitli sorbentlerle bir üründen ekstrakte etmek gibi farklı amaçlar için gerçekleştirilmektedir. Bu çalışmada α-tokoferolün silika üzerine adsorpsiyonu incelenmiştir. Öncelikle silika sentezi için hidrotermal sıcaklık, hidrotermal süre ve kalsinasyon süresi, Taguchi dizayn L9 ortogonal array kullanılarak optimize edilmiştir. En iyi adsorpsiyon için 120°C hidrotermal sıcaklık, 72 saat hidrotermal süre ve 6 saat kalsinasyon süresi belirlenmiştir. Daha sonra belirlenen koşullarda, silika sentezi iyonik (CTAB ve SDS) ve iyonik olmayan (P123) yüzey aktif maddelerle gerçekleştirilmiştir. Adsorpsiyon verileri Langmuir, Freundlich ve Temkin adsorpsiyon izoterm modelleri kullanılarak değerlendirilmiş olup sonuçların Langmuir modeline daha iyi uyum sağladığı tespit edilmiştir. Langmuir modeline göre maksimum adsorpsiyon kapasiteleri CTAB için 153,85 mg/g, P123 için 133,33 mg/g ve SDS için 111,11 mg/g olarak belirlenmiştir. Ayrıca sentezlenen malzemeler SEM, FT-IR, XRD ve N2 adsorpsiyon/desorpsiyon yöntemleriyle de karakterize edilmiştir. İstatistiksel olarak silika ve yüzey aktif maddeler kullanılarak sentezlenen silikalar arasında anlamlı fark tespit edilmemesine rağmen, CTAB ile sentezlenen silikaların α-tokoferol adsorpsiyon kapasitesinin diğer yüzey aktif maddelere göre daha yüksek olduğu gözlemlenmiştir. Sentez sırasında kullanılan yüzey aktif maddenin moleküler yapısı, son malzemenin yüzeyini ve moleküllerin adsorpsiyon kapasitesini değiştirmektedir. Yüzey aktif madde kullanılmasının BET yüzey alanını artırdığı gözlemlenmiştir.

Keywords

Silika, Alfa tokoferol, E vitamini, Yüzey aktif madde, Adsorpsiyon

Supporting Institution

Tarım ve Orman Bakanlığı-Tarımsal Araştırmalar Genel Müdürlüğü

Project Number

TAGEM/HSGYAD/T1/23/A4/P1/6510

Thanks

Bu çalışma Tarım ve Orman Bakanlığı-Tarımsal Araştırmalar Genel Müdürlüğü tarafından desteklenmiştir [Proje Numarası: TAGEM/HSGYAD/T1/23/A4/P1/6510].

α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS

Abstract

Vitamin E that contains α, β, γ, and δ-tocopherols and their tocotrienols is a fat-soluble vitamin with antioxidant properties. Adsorption of α-tocopherol is performed for various purposes, such as its purification from a product with different sorbents. We studied the adsorption of α-tocopherol onto silica. Firstly, hydrothermal temperature, hydrothermal time, and calcination time were optimized for silica synthesis according to the Taguchi design L9 orthogonal array. HT temperature 120 °C, HT time 72 hours, and calcination time 6 hours were determined for the best adsorption. Under these conditions, silica synthesis was carried out with ionic (CTAB and SDS) and non-ionic (P123) surfactants. Adsorption data were evaluated using Langmuir, Freundlich, and Temkin adsorption isotherm models and data fit the Langmuir model better. Maximum adsorption capacities were determined to be 153.85 mg/g for CTAB, 133.33 mg/g for P123, and 111.11 mg/g for SDS according to the Langmuir model. The synthesized materials were also characterized by SEM, FT-IR, XRD, and N2 adsorption/desorption methods. Although no statistically significant difference was found between the silica and silicas that synthesized with surfactants, the α-tocopherol adsorption capacity of silicas synthesized with CTAB was found to be higher than that of the other surfactants. The molecular structure of the surfactant used during synthesis changes the surface of the last material and the adsorption capacity of molecules. It has been observed that the use of a surfactant increases the BET surface area.

Keywords

Silica, Alpha tocopherol, Vitamin E, Surfactant, Adsorption

Supporting Institution

Ministry of Agriculture and Foresty General Directorate of Agricultural Research and Policies

Project Number

TAGEM/HSGYAD/T1/23/A4/P1/6510

Thanks

This work was supported by the Ministry of Agriculture and Foresty General Directorate of Agricultural Research and Policies [Project Number: TAGEM/HSGYAD/T1/23/A4/P1/6510].

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Details

Primary Language

English

Subjects

Separation Processes

Journal Section

Research Article

Authors

Ayşegül Arikan Asan ^*
0000-0002-2664-4635
Türkiye

Halit Levent Hoşgün
0000-0002-6699-666X
Türkiye

Publication Date

August 17, 2026

Submission Date

April 28, 2026

Acceptance Date

July 10, 2026

Published in Issue

Year 2026 Volume: 34 Number: 2

DOI

https://doi.org/10.31796/ogummf.1937280

IZ

https://izlik.org/JA29YN96KG

APA

Arikan Asan, A., & Hoşgün, H. L. (2026). α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS. Eskişehir Osmangazi Üniversitesi Mühendislik Ve Mimarlık Fakültesi Dergisi, 34(2), 2290-2300. https://doi.org/10.31796/ogummf.1937280

AMA

1.Arikan Asan A, Hoşgün HL. α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS. Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi. 2026;34(2):2290-2300. doi:10.31796/ogummf.1937280

Chicago

Arikan Asan, Ayşegül, and Halit Levent Hoşgün. 2026. “α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS”. Eskişehir Osmangazi Üniversitesi Mühendislik Ve Mimarlık Fakültesi Dergisi 34 (2): 2290-2300. https://doi.org/10.31796/ogummf.1937280.

EndNote

Arikan Asan A, Hoşgün HL (August 1, 2026) α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS. Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi 34 2 2290–2300.

IEEE

[1]A. Arikan Asan and H. L. Hoşgün, “α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS”, Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi, vol. 34, no. 2, pp. 2290–2300, Aug. 2026, doi: 10.31796/ogummf.1937280.

ISNAD

Arikan Asan, Ayşegül - Hoşgün, Halit Levent. “α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS”. Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi 34/2 (August 1, 2026): 2290-2300. https://doi.org/10.31796/ogummf.1937280.

JAMA

1.Arikan Asan A, Hoşgün HL. α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS. Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi. 2026;34:2290–2300.

MLA

Arikan Asan, Ayşegül, and Halit Levent Hoşgün. “α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS”. Eskişehir Osmangazi Üniversitesi Mühendislik Ve Mimarlık Fakültesi Dergisi, vol. 34, no. 2, Aug. 2026, pp. 2290-0, doi:10.31796/ogummf.1937280.

Vancouver

1.Ayşegül Arikan Asan, Halit Levent Hoşgün. α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS. Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi. 2026 Aug. 1;34(2):2290-30. doi:10.31796/ogummf.1937280

FARKLI YÜZEY AKTİF MADDELER KULLANILARAK SENTEZLENEN SİLİKALARIN α-TOKOFEROL ADSORPSİYON KAPASİTELERİNİN DEĞERLENDİRİLMESİ

Abstract

Keywords

Supporting Institution

Project Number

Thanks

α-TOCOPHEROL ADSORPTION STUDIES ON SYNTHESIZED SILICA BY USING DIFFERENT SURFACTANTS

Abstract

Keywords

Supporting Institution

Project Number

Thanks

References

Details

Primary Language

Subjects

Journal Section

Authors

Publication Date

Submission Date

Acceptance Date

Published in Issue

DOI

IZ

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