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All Journal Indonesian Journal of Chemistry Communications in Science and Technology IJCR (Indonesian Journal of Chemical Research) Bulletin of Chemical Reaction Engineering & Catalysis Journal of Batteries for Renewable Energy and Electric Vehicles
Saputra, Dita Adi
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Performance of Hydrothermally Prepared NiMo Dispersed on Sulfated Zirconia Nano-Catalyst in The Conversion of Used Palm Cooking Oil into Jet Fuel Range Bio-Hydrocarbons Wijaya, Karna; Saviola, Aldino Javier; Amin, Amalia Kurnia; Vebryana, Marini Fairuz; Bhagaskara, Adyatma; Ekawati, Hilda Anggita; Ramadhani, Saffana; Saputra, Dita Adi; Agustanhakri, Agustanhakri
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20157

Abstract

Human efforts to overcome environmental problems from using fossil fuels continue, such as hydroconversion of biomass into bio-jet fuel. Research on producing a jet fuel range of bio-hydrocarbons from used palm cooking oil catalyzed by sulfated zirconia impregnated with nickel-molybdenum bimetal has been successfully conducted. The hydrothermal method synthesized the nano-catalyst material in the sulfation and impregnation processes. The hydroconversion process was carried out at atmospheric pressure and a temperature of 300–600 °C for 2 h with a hydrogen gas flow rate of 20 mL/min and a catalyst-to-feed ratio of 1:100 (wt%). Compared with zirconia and sulfated zirconia, NiMo-impregnated sulfated zirconia showed the best activity and selectivity in bio-jet fuel production with liquid product and selectivity of 61.07% and 43.49%, respectively. This catalyst also performed well in three consecutive runs, with bio-jet fuel selectivity in the second and third runs of 51.68% and 30.86%, respectively. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Fixing cobalt metal onto mordenite through spray impregnation and its evaluation as a catalyst in transforming used coconut cooking oil into bio-jet fuel Saviola, Aldino Javier; Wijaya, Karna; Syoufian, Akhmad; Vebryana, Marini Fairuz; Anggraeni, Widuri; Rozana, Kharistya; Darsono, Nono; Saputra, Dita Adi; Saputri, Wahyu Dita
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1535

Abstract

Given the challenges posed by fossil-based jet fuel, research into bio-jet fuel production has intensified to achieve carbon neutrality. The present work reports a significant breakthrough with the successful conversion of used coconut cooking oil into bio-jet fuel utilizing a cobalt-impregnated mordenite catalyst. Cobalt was introduced to mordenite via the spray impregnation method at a concentration of 2% using a CoCl?·6H?O solution. The resultant catalyst was characterized using FTIR, XRD, NH?-TPD, SAA, FESEM-EDX Mapping, TEM, XPS, and TG/DTA instruments. Hydrotreatment was conducted in a semi-batch reactor at atmospheric pressure, employing H? gas at a flow rate of 20 mL/min and a catalyst-to-feed ratio of 1:200 (w/w) for a duration of 2 h. The addition of cobalt significantly enhanced the efficiency of the hydrotreatment by improving the catalytic performance of mordenite as a support material. The liquid product conversion and total bio-jet fuel yield obtained from the hydrotreatment of used coconut cooking oil using the Co/mordenite catalyst were 60.25% and 51.11%, respectively. The highest selectivity for bio-jet fuel was observed in fraction II (450–550 °C) at 88.90%. This catalyst exhibited sustained performance over three consecutive runs, indicating its potential application in the future biofuel industry. Altogether, this research reveals the possibility of employing used coconut cooking oil as a sustainable and promising feedstock to be converted into bio-jet fuel by hydrodeoxygenation and/or hydrocracking reactions.
The Calcination Temperature Effect on Crystal Structure of LiNi1/3Mn1/3Co1/3O2 Cathode Material for Lithium-Ion Batteries Rahayu, Sri; Saudi, Aghni Ulma; Tasomara, Riesma; Gumelar, Muhammad Dikdik; Utami, Wahyu Tri; Hapsari, Ade Utami; Raharjo, Jarot; Rifai, Abdulloh; Khaerudini, Deni Shidqi; Husin, Saddam; Saputra, Dita Adi; Yuliani, Hanif; Andrameda, Yurian Ariandi; Taqwatomo, Galih; Arjasa, Oka Pradipta; Damisih, Damisih; Hardiansyah, Andri; Pravitasari, Retna Deca; Agustanhakri, Agustanhakri; Budiman, Abdul Hamid
Journal of Batteries for Renewable Energy and Electric Vehicles Vol. 1 No. 02 (2023): NOVEMBER 2023
Publisher : NBRI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59046/jbrev.v1i02.22

Abstract

The lithium-ion battery has gained popularity among other secondary batteries for portable electronic devices and electric vehicle applications, especially the LiNi1/3Co1/3Mn1/3O2 or NMC111, considering its well-balanced configuration resulting in stable and safe electrochemical performance. NMC111 has been successfully prepared using a coprecipitation process at calcination temperatures from 800 to 950°C. The physical characteristics were investigated using X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), and Particle Size Analysis (PSA). The XRD patterns showed the rhombohedral single phase for all calcination temperatures. Meanwhile, higher calcination temperatures offer higher degree of crystallinity, lower intensity ratio and more undesirable cation mixing. The particles with a uniform rectangle or pyramid shape are observed at the calcination temperature range from 800 to 900°C. However, bigger submicron particles with a rectangle or pyramid shape are detected at a higher temperature (950°C). The SEM-EDS mapping shows the homogeneity composition for all variation calcination temperatures. PSA analysis showed that calcination temperature at 800 and 850°C gives the particle less than 400 nm suggesting a potential material for a cathode of lithium-ion batteries.
Regeneration of Spent Bleaching Earth by Calcination and Its Morphological Enhancement via KOH Impregnation Nugraheni, Ika Kusuma; Jaya, Jaka Darma; Nuryati, Nuryati; Sunardi, Sunardi; Irawati, Utami; Faiza, Putri Iis; Saputra, Dita Adi
Indonesian Journal of Chemistry Vol 26, No 1 (2026)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.99600

Abstract

Spent bleaching earth (SBE), a waste generated from palm oil bleaching, contains residual oil and organic matter that block its pore structure and pose environmental disposal concerns. Regeneration of SBE is therefore essential to enable its reutilization. In this study, SBE was regenerated by calcination and further modified via KOH impregnation at concentrations of 1.00, 0.10, and 0.01 M. The regenerated materials were characterized using XRF, SEM, TEM, XRD, and BET surface area analysis. Calcination combined with 0.10 M KOH impregnation increased the surface area from 8.70 to 93.81 m2/g, approaching the value of activated bleaching earth (94.29 m2/g), and significantly altered pore volume and pore size distribution. These findings indicate that calcination restores the basic structure of SBE, while subsequent KOH impregnation enhances its morphological properties, highlighting the potential of regenerated SBE as a low-cost adsorbent or catalyst support.
Pengaruh Variasi HA-TCP (Hydroxy Apatit-Tricalcium Pospat) Terhadap Biokomposit (HA:TCP)-Gelatin-CMC Sebagai Injectable Bone Subtitute (IBS) Purwiandono, Gani; Julita, Hera; Saputra, Dita Adi
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 3, ISSUE 1, 2018
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.147 KB) | DOI: 10.20885/ijcr.vol3.iss1.art4

Abstract

The synthesis of biocomposite (HA:TCP) – Gelatine – CMC for bone filler material has been carried out. In this research, the ratio of HA and TCP was varied as follows: 70:30, 50:50 and 40:60. The decrease of HA and the increase of TCP concentration will decrease the density, increase the percentage of porosity and swelling. The best composition for the synthesis was obtained for sample B with the ratio of HA:TCP = 50:50. For sample B, the synthesized biocomposite has the density of 1.67790 gr/cm3, porosity of 78.64%, tension of 10.14 MPa, swelling ability  46.85% and the sample mass degradation percentage of 8.1 %. The composition used for the biocomposite synthesis in this research was suitable to be applied as bone filler material which needs a dense pores and high tension.
Co-Authors Abdul Hamid Budiman Agustanhakri, Agustanhakri Akhmad Syoufian Amin, Amalia Kurnia Andrameda, Yurian Ariandi Anggraeni, Widuri Bhagaskara, Adyatma Damisih, Damisih Deni Shidqi Khaerudini Ekawati, Hilda Anggita Faiza, Putri Iis Gani Purwiandono, Gani Gumelar, Muhammad Dikdik Hapsari, Ade Utami Hardiansyah, Andri Husin, Saddam Jaka Darma Jaya Jarot Raharjo Julita, Hera Karna Wijaya Nono Darsono, Nono Nugraheni, Ika Kusuma Nuryati Nuryati Oka Pradipta Arjasa Pravitasari, Retna Deca Ramadhani, Saffana Rifai, Abdulloh Rozana, Kharistya Saudi, Aghni Ulma Saviola, Aldino Javier SRI RAHAYU Sunardi Sunardi Taqwatomo, Galih Tasomara, Riesma Utami Irawati Vebryana, Marini Fairuz Wahyu Dita Saputri Wahyu Tri Utami Yuliani, Hanif