Sintesis Katalis Kobalt berbasis Metal Organic Frameworks untuk Konversi PFAD menjadi Green Diesel

Abstract

Green diesel merupakan energi terbarukan sebagai pengganti solar dari fosil. Konversi distilat asam lemak sawit (PFAD) menjadi green diesel membutuhkan kondisi ekstrem sehingga diperlukan katalis yang efisien dan selektif. Penelitian ini bertujuan menyintesis katalis Co-MOF dan Co@C, serta evaluasi kinerja katalis terhadap hidrodeoksigenasi PFAD. Co-MOF disintesis secara solvotermal menghasilkan rendemen 83,91% dan pirolisisnya menghasilkan Co@C 31,26%. Hasil FTIR menunjukkan gugus fungsi penyusun Co-MOF dan Co@C. Analisis XRD menunjukkan terbentuknya fase kristal Co-MOF serta perubahan fase logam pada Co@C. Ukuran kristal Co-MOF dan Co@C masing-masing 30,61 nm dan 10,70 nm dengan kristalinitas 17,31% dan 19,03%. Konversi PFAD menjadi green diesel dengan Co-MOF mencapai 100% dengan selektivitas green diesel 99,84%, sedangkan Co@C menghasilkan selektivitas yang lebih rendah (91,4%).

Green diesel is a renewable energy source that replaces fossil diesel. Extreme conditions are required for converting palm fatty acid distillate (PFAD) into green diesel, necessitating the use of efficient and selective catalysts. The goal of this research is to create Co-MOF and Co@C catalysts and assess their efficacy in the hydrodeoxygenation of (PFAD). Co-MOF was synthesized using the solvothermal technique, giving 83.91%, while pyrolysis created Co@C, yielding 31.26%. FTIR data validated the functional groups of both catalysts, Co-MOF and Co@C, while XRD examination confirmed Co-MOF's crystalline phase and Co@C's metallic phase transformation. The crystal diameters of Co-MOF and Co@C were 30.61 nm and 10.70 nm, respectively, with crystallinities of 17.31% and 19.03%. The conversion of PFAD to green diesel using Co-MOF achieved 100% with a selectivity of 99.84%, whereas Co@C had a lesser selectivity (91.4%).