SYNTHESIS OF SULFATED TiO2 FOR THE CONVERSION OF FRUCTOSE TO 5-HYDROXYMETHYLFURFURAL (HMF)
DOI:
https://doi.org/10.68115/reprokimia.v1i2.79Keywords:
5-Hidroksimetilfurfural, HMF, TiO2 Tersulfatasi, Fruktosa, impregnasiAbstract
5-hidroksimetilfurfural (HMF) merupakan bahan kimia intermediet yang dimanfaatkan dalam pembuatan bahan bakar dan polimer yang berasal dari biomassa. HMF disintesis melalui dehidrasi C6 monosakarida fruktosa dengan menggunakan katalis asam. Katalis asam yang digunakan dalam penelitian ini untuk reaksi dehidrasi fruktosa menjadi HMF adalah TiO2 tersulfatasi. Katalis ini telah berhasil disintesis dengan menggunakan metode yang sederhana. TiO2 tersulfatasi disintesis dengan cara melakukan impregnasi terhadap TiO2 dengan penambahan asam sulfat. Padatan yang telah terimpregnasi kemudian dikalsinasi selama 3 jam pada temperatur 400; 450; dan 500 °C. Data analisis karakterisasi katalis menggunakan SEM-EDS menunjukkan adanya atom sulfur dalam semua sampel. Hal ini lebih lanjut didukung dengan data spektrum inframerah, yang memperlihatkan adanya vibrasi Ti-O, S-O, dan S=O. Uji aktivitas katalitik dilakukan pada proses dehidrasi fruktosa. Setelah reaksi selama 2 jam, konversi fruktosa menjadi HMF menghasilkan yield hingga 85,5%. Hasil ini menunjukkan TiO2 tersulfatasi menjadi katalis yang menjanjikan dalam proses sintesis HMF melalui proses dehidrasi fruktosa.
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