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All Journal VALENSI CHEMISTRY PROGRESS JURNAL KIMIA SAINS DAN APLIKASI EduChemia: Jurnal Kimia dan Pendidikan ALCHEMY Jurnal Penelitian Kimia Jurnal Riset Sains dan Kimia Terapan Bulletin of Chemical Reaction Engineering & Catalysis

Isalmi Aziz

Program Studi Kimia Fakultas Sains Dan Teknologi Universitas Islam Negeri Syarif Hidayatullah Jakarta

Author-ID : 237739

Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Environmental Science Materials Science & Nanotechnology

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Catalytic Cracking of Crude Biodiesel into Biohydrocarbon Using Natural Zeolite Impregnated Nickel Oxide Catalyst Isalmi Aziz; Edra Aditya Fhilipia Ardine; Nanda Saridewi; Lisa Adhani
Jurnal Kimia Sains dan Aplikasi Vol 24, No 7 (2021): Volume 24 Issue 7 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Crude biodiesel is biodiesel that still contains impurities. A catalytic can improve the quality of biohydrocarbons (biogasoline, biokerosene, and green diesel). The catalyst used is nickel oxide impregnated natural zeolite (NiO/Zeolite). The use of nickel can increase the activity of the catalyst because it has an empty d orbital and a smaller molecular size. This study aims to determine the best catalyst that can exhibit the greatest selectivity toward biohydrocarbons. Natural zeolite was activated and impregnated by varying the concentration of NiO (1, 3, and 5% w/w). The characteristics of the catalyst were determined by the crystallinity (X-Ray Diffraction), surface area (Surface Area Analyzer), and functional group (Fourier Transform Infrared). The catalyst and crude biodiesel were put in an autoclave reactor and operated at a temperature of 375°C and 3 hours. The obtained product was tested with Gas Chromatography-Mass Spectroscopy. The results of the XRD analysis showed the presence of NiO at 2θ 37.23; 43.15; and 62.65°. Nickel oxide on the catalyst was detected at a wavenumber of 671.23 cm‑1. The highest surface area was obtained at a NiO/Zeolite 1% of 49.4 m2/g. 1% NiO/Zeolite catalysts gave the best results on catalytic cracking of crude biodiesel with a reaction conversion of 60.79% and selectivity of 9,73%; 29,64% and 9,18% for biogasoline, biokerosene, and green diesel, respectively.

Utilization of Coconut Shell as Cr2O3 Catalyst Support for Catalytic Cracking of Jatropha Oil into Biofuel Isalmi Aziz; Yessinta Kurnianti; Nanda Saridewi; Lisa Adhani; Wahyu Permata
Jurnal Kimia Sains dan Aplikasi Vol 23, No 2 (2020): Volume 23 Issue 2 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Coconut shell waste is a waste that has a high carbon content. Carbon in coconut shell waste can be converted into activated carbon having a large surface area. This potential property is suitable to apply the coconut shell as catalyst support. To increase the catalytic activity, metal oxides such as Cr2O3 are impregnated. The purpose of this study is to synthesize Cr2O3/carbon catalyst and test its catalytic activity on catalytic cracking of Jatropha oil. The first stage was the synthesis of activated carbon and the determination of its proximate and ultimate. The second step was impregnation to produce Cr2O3/carbon catalyst. Furthermore, X-Ray Diffraction to determine crystallinity, Surface Area Analyzer to identify its surface area and Fourier Transform Infrared to analyze functional groups. Then the catalytic activity was tested on the catalytic cracking of Jatropha oil. In addition, the chemical compound composition and biofuel selectivity of the catalytic cracking product was determined using Gas Chromatography-Mass Spectrometer. Proximate analysis results showed that activated carbon contains 9%, 1%, 23%, and 67% of water, ash, evaporated substances, and bound carbon, respectively. The results of the ultimate analysis resulted in carbon (C), hydrogen (H), and nitrogen (N) contents of 65.422%, 3.384%, and 0.465%, correspondingly. The catalyst crystallinity test showed the presence of Cr2O3 peaks at 2θ: 24.43°; 33.47° and 36.25° according to JCPDS No. 84-1616. In the absorption area of 400-1000 cm-1 and the range of 2000 cm-1 showed the presence of Cr-O stretching due to Cr2O3 adsorbed into the activated carbon structure. The surface area of activated carbon and Cr2O3/carbon catalysts with a concentration of 1.3, and 5% was 8.930 m2/g; 47.205 m2/g; 50.562 m2/g; and 38.931 m2/g, respectively. The catalytic activity test presented that the best performance was showed by Cr2O3/carbon catalyst with a concentration of 5% indicated by conversion of Jatropha oil into biofuel of 67.777% with gasoline selectivity, kerosene, and diesel of 36.97%, 14.87%, and 15.94%, correspondingly.

Co-Authors Adawiah Adawiah Adawiah Adawiah adawiah adawiah, adawiah Adid Adep Dwiatmoko Agung Setia Nugraha Agustino Zulys Anna Muawanah Annisa Shabrina Arif Rahman Arif Rahman Hakim Badrul Ulum Badrul Ulum Biaunik Niski Kumila Christie Adi Octavia Dasumiati Dasumiati Dede Sukandar Dwiatmoko, Adid Adep Dzikri Anfasa Firdaus Edra Aditya Fhilipia Ardine Egi Agustian Eka Puspa Sari Farishi, Salman Fira Luthfiana Fitri Febriyani Fitria, Shella Hendrawati Hendrawati Hendrawati Hendrawati Joni Prasetyo, Joni Juwita Suwandari Lian Risa Adinda, Ade Lisa Adhani Lisa Adhani Lisa Adhani Lisa Adhani Lisa Adhani Lisa Adhani Maharani, Najiah Sephia Mohammad Ali Marwono Muhammad Akbar Tafdila Muhammad Farhan Muhammad Ihsan Maulana Muhammad Nizar Aristya Muhammad Shofyan Gunawan Nanda Saridewi, Nanda Nani Suryani Nino Rinaldi Niski Kumila, Biaunik Novia Dwi Rahmawati Noviyan Darmawan Nur Hijjah Bayani Fadhilah Nur Mahrunnisa Nurhasni Nurhasni Purwantiningsih Sugita Reza Falepi Riyanti, Aditya Saeful Rohman Saeful Rohman Savitri Savitri Selviana Rustanti Siti Nurbayti Siti Nurbayti Siti Nurbayti Siti Nurbayti Thamzil Las Wahyu Permata Wahyu Permata Widjaya, Robert Ronal Wulandari Oktavia Yati Maryati yati, indri Yessinta Kurnianti Yulyani Nur Azizah

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