Yüzey Yanıt Yöntemi ile Etil Asetat Sentezinin Optimizasyonu ve Sentezde Hidrojelin Reaktif Sorpsiyon Etkisinin İncelenmesi

Yıl 2022, Sayı: 35, 94 - 101, 07.05.2022

Nilüfer Hilmioğlu

https://doi.org/10.31590/ejosat.1061611

Cited By: 2

Öz

Bu çalışmada etil alkol ve asetik asit kullanarak etil asetat sentezi yapılmıştır. Etil asetat çözücü ve yakıt katkısı olarak kullanılmaktadır. Sentez yüzey yanıt yöntemi ile optimize edilmiştir. Sıcaklık, katalizör miktarı ve reaktan başlangıç molar oranının asit dönüşümü üzerindeki etkileri incelenmiştir. Sulfo süksinik asit katalizör olarak kullanılmıştır. Dönüşüm değerleri başlangıç molar oranındaki artış, katalizör miktarındaki artış ve sıcaklıktaki artış ile artmıştır. Bu çalışmada polivinil alkol hidrojeller de reaktif sorpsiyon uygulaması için hazırlanmıştır. Hidrojeller belli çalışma koşullarında rektöre eklenmiş ve esterleşme reaksiyonunda kullanılmıştır. Katalizör ile birlikte hidrojel kullanımının dönüşümü arttırdığı görülmüştür. Etil asetat sentezi design Expert program ile optimize edilmiştir. Optimizasyon Yüzey Yanıt Yöntemi Merkezi Kompozit Tasarım Metodu ile yapılmıştır. Program tarfından Quadratik model önerilmiştir. Deneysel veriler ile model verilerinin birbirleriyle uyumlu olduğu görülmüştür. Dönüşüm için optimum değişkenler 80°C sıcaklık, % 1 katalizör miktarı, 5 başlangıç molar oranıdır. Optimum değerlerde elde edilecek en yüksek dönüşüm % 89.35 dir.

Anahtar Kelimeler

Optimizasyon, Quadratik model, Etil asetat.

Optimization of Synthesis of Ethyl Acetate by Response Surface Method and Investigation of Reactive Sorption Effect of Hydrogel in Synthesis

Öz

In this study, ethyl acetate synthesis is made from ethyl alcohol and acetic acid. Ethyl acetate is used as solvent and alternative fuel additive The synthesis was optimized by the surface response method. The effects of temperature, catalyst amount and reactant initial molar ratio on acid conversion in the reaction were investigated. Sulfo succinic acid was used as the catalyst. Conversion values were increased with increase in initial molar ratio, increase in catalyst amount, and increase in temperature. In this study, poly vinyl alcohol hydrogels were also prepared for reactive sorption application. Hydrogels were added to the reactor under certain operating conditions and used in the esterification reaction. It was observed that the conversion increased by using hydrogels together with catalyst. Ethyl acetate synthesis was optimized by using the student version of the Design Expert software. Optimization was made with the center composite design method by using response surface method. Quadratic model is proposed by the program. Experimental data and model data were found compatible with each other. Optimum values for conversion are variables that the temperature is 80 °C, the amount of catalyst is 1% and the initial molar ratio is 5. The highest conversion value of 89.35% could be achieved by the optimum values.

Anahtar Kelimeler

Optimization, Quadratic model, Ethyl acetate

Kaynakça

• Aurand E. R., Lampe K. J., Kimberly B. Bjugstad K. B. (2013). Defining and Designing Polymers and Hydrogels for Neural Tissue Engineering. Journal of Neuroscience Research, 72 (3),199-213.
• Bekdeşer, B. (2019). Modelling and Optimizing Microwave-Assisted Extraction of Antioxidants From Burdock (Arctium Lappa) Using Responce Surface Methodology. European Journal of Science and Technology, 17, 655-662.
• Çolak M., Boyacı A., İ. (2018). A Fuzzy Logic Based Green Performance EvaluationModel for Automotive Industry . European Journal of Science and Technology, 13, 39-44.
• Ezis, M. A., Ibrahim, V., Barakat, Y. (2018a). Effect of ethyl acetate addition on phase stability, octane number and volatility criteria of ethanol-gasoline blends. Egyptian Journal of Petroleum, 27 (4), 567-572.
• Ezis, M. A., Awad, N., Ibrahim, V., Barakat, Y. (2018b). Influence of ethyl acetate addition on phase stability and fuel characteristics of hydrous ethanol-gasoline blends. Egyptian Journal of Petroleum, 27 (4), 1333-1336.
• Fu X., Zhan Y., Meng Y., Li Y., Liao C., Lu Z. (2017).Graphene oxide/poly(vinyl alcohol) hydrogels with good tensile properties and reusable adsorption properties. Plastics, Rubber and Composites, 46,(2), 53–59.
• Hasırcı, G., Hilmioğlu, N. (2018). Preparation and Usage of PVA/PAMPS Catalytic Membrane for Ester Production. 7 th NATIONAL CATALYSIS CONGRESS 9-12 September, 17-18. Denizli, Turkey.
• Hasırcı, G., İlgen, O., Hilmioğlu, N. (2019). Synthesis Of Solketal By Economic Catalyst Sulfo Succinic Acıd. 2nd International Conference on Life and Engineering Sciences, 113-117. Mok C. F., Ching C. Y., Muhamad F., Osman N. A. A., Hai N. D., Hassan C. R. C. (2020). Adsorption of Dyes Using Poly(vinyl alcohol) (PVA) and PVA‑Based Polymer Composite Adsorbents: A Review. Journal of Polymers and the Environment, 28, 775–793.
• Mortas, M., Awad, N. (2020). Optimization of Extraction Parameters by Response Surface Methodology in Handling Tea Extract From Fibrous Tea Waste. European Journal of Science and Technology, 20, 672-684.
• Narasimhan, M., Muthukumaran, C., Sharmila, G. (2020). A comprehensive review on the application of response surface methodology for optimization of biodiesel production using different oil sources. Journal of King Saud University - Engineering Science, Article in press, Available online 29 September 2020. https://doi.org/10.1016/j.jksues.2020.09.012
• Sirsam R., Hansora D., Usmani G. A. (2016). A Mini-Review on Solid Acid Catalysts for Esterification Reactions. Journal of The Institution of Engineers (India): Series E, 97 (2),167–181.
• Soltani S., Rashid U. Al-Resayes S. I., Nehdi I. A. (2017). Recent progress in synthesis and surface functionalization of mesoporous acidic heterogeneous catalysts for esterification of free fatty acid feedstocks: A review. Energy Conversion and Management, 141, 183-205.
• Turki, N., Boujelben, N., Bakari, Z., Bouzud, J. (2021). Use of Response Surface Methodology for Optimization of Nickel Adsorption in an Aqueous Solution by Clay. American Journal of Environmental Sciences, 2021, 17 (5) 92-100. DOI: 10.3844/ajessp.2021.92.100
• Wang Y., Wang X., Xie Y., Zhang K.(2018). Functional nanomaterials through esterification of cellulose: a review of chemistry and application. Cellulose, 25, 3703–3731.
• Yenihan Yüzer, N. , Hilmioğlu, N. (2019a). Diethyl Maleate Synthesis Wıth Hydrophilic Membrane Additive In The Batch Reactor. International Marmara Science Sciences Congress (imascon 2019 spring) , 1800-1806. Yenihan Yüzer, N. (2019b). Membran Reaktörde İzopropil Asetat Üretiminin İncelenmesi, Yüksek Lisans Tezi, 39-41, Kocaeli Üniversitesi Fen Bilimleri Enstitüsü, Kimya Mühendisliği Anabilim Dalı.
• Yılmaz, O, Ertürk, M. C., Hilmioğlu, N. (2021). Optimization Of Ethyl Acetate Production By Response Surface Method, Graduation Project, Kocaeli Üniversitesi, Kimya Mühendisliği Bölümü.
• Yüksel A. A. (2018), Utilization of Response Surface Methodology in Optimization of Extraction of Plant Materials. Statistical Approaches With Emphasis on Design of Experiments Applied to Chemical Processes. 2018, 157-169. DOI: 10.5772/intechopen.73690.