KARAKTERISTIK FISIKO-KIMIA KATALIS HETEROGEN CaO-BASE DAN PEMANFAATANNYA UNTUK KONVERSI MINYAK GORENG BEKAS SECARA SINAMBUNG MENJADI BIODIESEL

Jurnal Kimia Pub Date : 2021-07-31 DOI:10.24843/jchem.2021.v15.i02.p09

I. Simpen, I. S. Negara, O. Ratnayani

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Abstract

Penelitian tentang katalis heterogen berbasis CaO dari cangkang kepiting sebagai support yang dimodifikasi dengan K2CO3 dan TiO2 serta pemanfaatnnya untuk konversi minyak goreng bekas secara sinambung menjadi biodiesel telah dilakukan. CaO hasil preparasi dicampurkan dengan K2CO3 dan TiO2 dengan variasi rasio secara reaksi fasa padat. Katalis heterogen yang diperoleh dikarakterisasi luas permukaan spesifik BET dan rerata ukuran partikelnya dengan N2 gas sorption analyzer, keasaman dan kebasaan permukaannya dengan metode titrasi asam basa, serta kristalinitasnya dengan XRD. Katalis dengan karakteristik terbaik diuji aktivitas katalitiknya terhadap yield biodiesel dalam mengonversi minyak goreng bekas dan kandungannya dianalisis menggunakan GC-MS. Hasil yang diperoleh menunjukkan bahwa karakteristik fisiko-kimia katalis optimum diperoleh pada CaO/K2O:TiO2 rasio massa 3:1. Uji aktivitas katalitik untuk konversi minyak goreng bekas menjadi biodiesel diperoleh yield 88,24%, lebih tinggi dari CaO/K2O (65,03%) dan CaO (64,09%). Analisis GC-MS menunjukkan bahwa komposisi biodiesel yang dominan adalah metil ester, yaitu metil laurat, metil meristat, metil palmitoleat, dan metil linoleat. Kata kunci: biodiesel, CaO/K2O:TiO2, katalis heterogen, karakteristik fisiko-kimia, minyak goreng bekas Research about heterogeneous catalyst prepared from CaO of crab shells as support modified with K2CO3 and TiO2 as well as its utilization for converting used cooking oil (UCO) into biodiesel simultaneously has been carried out. Prepared CaO was mixed with K2CO3 and TiO2 with various ratios by using solid state reaction. The BET spesific surface area and the mean particle size of the resulting heterogenous catalyst were characterized by N2 gas sorption analyzer, surface acidity and basicity by base-acid titration method, and crystallinity by XRD. The activity of the catalyst with the best characteristics for converting UCO into biodiesel yield was tested and the chemical contents were analyzed by GC-MS. The results showed that the optimum physico-chemical characteristics of the heterogeneous catalyst was CaO/K2O:TiO2 with mass ratio of 3:1. The catalytic activity of the CaO/K2O/TiO2 catalyst in converting UCO into biodiesel was 88.24%, higher than CaO/K2O catalyst (65.03%) and CaO (64.09%). The results of GC-MS analysis indicated that the chemical contents of biodiesel were dominantly methyl esters, such as methyl laurate, methyl meristate, methyl palmitoleate, methyl palmitate, and methyl linoleate. Keywords: biodiesel, CaO/K2O:TiO2, heterogeneous catalyst, physico-chemical characteristics, used cooking oil

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基质催化剂的化学性质及其利用可再生原油将废气转化为生物柴油

研究了用K2CO3修改的蛤壳的异色催化剂，并将其TiO2和利用，将原食用油高速转换成生物柴油的过程。曹的研究结果与K2CO3混合，与TiO2在固体相位反应速率上的变化变化。提取的异质催化剂被定义为BET的特定表面积和颗粒大小的重新定义，其颗粒大小由N2气体梯度分析仪、酸性酸和碱酸处理方法以及XRD的晶体。这是一种具有极佳特性的催化剂，它在转基因二手食用油中对生物柴油的添加剂进行了催化活动，并用GC-MS进行了分析。收益率表明，曹楠/K2O获得了最佳催化剂的化学特性:TiO2比3:1。产品产品对将原食用油转化为生物柴油的催化活动进行了测试:yield 88.24%，高于CaO/K2O(65.03%)和CaO(64.09%)。GC-MS分析表明，主要的生物柴油成分是甲基色、甲基色、甲基色、甲基色和甲基色。关键词:曹的准备用固态反应混合了K2CO3和TiO2。贝特特定的表面积和平均分配catalyst的表面积的粒子由N2气体梯度分析、表面acidity和基础城市由base-微不足道的方法方法和XRD的cry幼稚。测试生物柴油易燃物的最佳作用的催化剂是测试，化学承包商被GC-MS分析。结果表明，目前的优生学化学特征是觉/K2O: 3比1的质量增加氧气。从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲，从技术上讲gc女士分析的结果表明，生物柴油的化学成分含量主要是甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基、甲基和甲基。生物柴油，曹/K2O:TiO2，异型catalyst，物理化学特征，used烹饪油

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Jurnal Kimia

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