<p>Biodiesel merupakan suatu senyawa metil ester berantai panjang yang mengandung asam lemak yang diperoleh melalui reaksi transesterifikasi. Bahan bakar alternatif ini dapat disintesis dari minyak goreng komersial dengan bantuan katalis. Katalis basa sering digunakan dalam reaksi transesterifikasi pada sintesis biodiesel. Penggunaan katalis akan meningkatkan persentase dari produk biodiesel yang dihasilkan. Katalis berfasa solid atau padat menjadi pilihan yang tepat untuk memudahkan proses pemisahan produk akhir reaksi dengan katalis. Katalis fasa padat yang dapat digunakan adalah zeolit dan bentonit alam. Penelitian ini bertujuan untuk menentukan pengaruh kinerja katalis zeolit dan bentonit yang telah diaktivasi terhadap produksi biodiesel dengan bahan dasar minyak goreng komersial serta menentukan rendemen hasil sintesis biodiesel melalui penggunaan katalis alam. Aktivasi dengan KOH dapat meningkatkan aktivitas katalisis dengan memperbesar luas permukaan dari katalis alam (bentonit dan zeolit). Analisis FTIR dan XRD terhadap katalis alam, pemurnian, aktivasi dan <em>recycle</em> menunjukkan adanya perubahan struktur kristalin dari katalis yang digunakan. Rendemen hasil sintesis biodiesel melalui penggunaan katalis bentonit dan zeolit berturut-turut adalah 91,75% dan 86,05%. Berdasarkan data persen rendemen hasil sintesis biodiesel, maka penggunaan katalis bentonit lebih baik di bandingkan dengan katalis zeolit. Analisis spektrum FTIR dari sintesis biodiesel yang berasal dari minyak jelantah menunjukkan hilangnya gugus OH yang memastikan bahwa reaksi transesterifikasi terjadi. Kualitas biodiesel yang dihasilkan memenuhi persyaratan Standar Nasional Indonesia (SNI) 04-7182-2006. Massa jenis biodiesel yang diproduksi menggunakan zeolit dan bentonit sebesar 868,54 kg/m<sup>3 </sup>dan 863,50 kg/m<sup>3</sup>. Sementara itu, viskositas biodiesel yang dihasilkan menggunakan zeolit dan bentonit berturut-turut sebesar 2,92 mm<sup>2</sup>/s dan 2,58 mm<sup>2</sup>/s.</p><p><strong>Comparison of Using Natural Catalysts (Zeolite and Bentonite) in <strong>Biodiesel </strong>Synthesis from Commercial Cooking Oil. </strong>Biodiesel is a long-chain methyl ester compound that contains fatty acids obtained through a transesterification reaction. This alternative fuel can be synthesized from commercial cooking oil with the help of a catalyst. Base catalysts are often used in transesterification reactions in biodiesel synthesis. Using a catalyst will increase the percentage of the biodiesel product produced. Solid or solid-phase catalysts are the right choice to facilitate separating the final reaction product from a catalyst. Solid-phase catalysts that can be used are zeolite and natural bentonite. This study aims to determine the effect of activated zeolite and bentonite catalysts on biodiesel production using commercial cooking oil as a base material and determine biodiesel synthesis yield using natural catalysts. The catalyst activation with KOH can increase catalytic activity by increasing the surface area of natural catalysts. FTIR and XRD analysis of natural catalysts, purification, activation, and recycling showed a change in the crystalline structure of the catalyst used. The yield of biodiesel synthesis by using bentonite catalyst was 91.75%. Meanwhile, the use of zeolite catalysts produced 86.05% biodiesel. Based on the percent yield data from biodiesel synthesis, the use of bentonite catalyst is better than zeolite catalyst. FTIR spectrum analysis of biodiesel synthesis from used cooking oil showed the loss of the OH group, which confirmed that the transesterification reaction occurred. The quality of the biodiesel produced meets the requirements of the Indonesian National Standard (SNI) 04-7182-2006. The biodiesel densities produced using zeolite and bentonite are 868.54 kg/m<sup>3</sup> and 863.50 kg/m<sup>3</sup>. Meanwhile, the biodiesel viscosities produced using zeolite and bentonite are 2.92 mm<sup>2</sup>/s and 2.58 mm<sup>2</sup>/s, respectively.</p>
Metal organic framework (MOF) is one of extraordinary materials in many technical field applications. One of them is as CO2 gas adsorbent. We studied, synthesized, and characterized Copper-based material, known as Metal organic frameworks (MOFs), using a solvothermal-based modification method. Copper salt (Cu (NO3)2. 3H2O) and benzene dicarboxylic acid (H2BDC) were mixed and then heated in an oven at 120°C, to produce low impurities, small pore and uniform particle size of materials called CuBDC. Infrared spectroscopy and XRD data confirmed the formation of CuBDC. Furthermore, the result showed that CuBDC frameworks have good thermal stability up to 330°C. Thereafter SEM picture showed random, layered, and asymmetrical corners structure which is typical of triclinic crystal system. Lastly, specific surface areas and the porosity were analyzed using The Brunauer-Emmett-Teller (BET) method. It recorded 485 m2.g-1 of surface area while average pore volume and average pore size are 0.16 cm3.g-1 and 5.9 Å respectively. @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-536869121 1107305727 33554432 0 415 0;}p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman",serif; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-US;}.MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ansi-language:IN; mso-fareast-language:IN;}div.WordSection1 {page:WordSection1;}
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.