Bralin Dwiratna

National Research and Innovation Agency

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Novio Valentino

National Research and Innovation Agency

Joni Prasetyo

National Research and Innovation Agency

Nurdiah Rahmawati

National Research and Innovation Agency

Galuh Wirama Murti

National Research and Innovation Agency

Herson Bangun

National Research and Innovation Agency

Bagus Alif Firmandoko

National Research and Innovation Agency

Choji Fukuhara

Shizuoka University

Restu Siti Nursa'adah

National Research and Innovation Agency

Intan Machiya

National Research and Innovation Agency

Ilhamsyah Noor

National Research and Innovation Agency

Cooperative Institutions

National Research and Innovation Agency

National Nuclear Energy Agency of Indonesia

Tenaga Nasional Berhad (Malaysia)

Badan Pengkajian dan Penerapan Teknologi

Information and Communication Technology Agency

Shizuoka University

Hachinohe Institute of Technology

Kogakuin University

Universitas Pamulang

IPB University

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High Performance of a Structured Ni-Based Catalyst for Autothermal Dry Reforming of Methane

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN (2020)

Bralin Dwiratna Kazuaki Hirao Ryo Watanabe Choji Fukuhara

Autothermal dry reforming of methane (ATR-DRM) has gained considerable research attention for its application in the conversion of methane and carbon dioxide to valuable synthesis gas (syngas). However, granular Ni-based catalysts offer limited stability and durability when used in the dry reforming of methane (DRM). Here, the performance of a honeycomb-type Ni/Al2O3 structured catalyst during syngas production was investigated under ATR-DRM conditions. The catalyst was successfully prepared on an aluminum-fin substrate by a combination of sol–gel and electroless plating methods. The addition of oxygen during the DRM significantly enhanced the reforming performance and considerably suppressed coke deposition. Furthermore, the Ni/Al2O3 structured catalyst could reduce hot spot formation and improve energy efficiency. Therefore, ATR-DRM using a structured catalyst is a promising technology that promotes process intensification.

Carbon dioxide reforming

Methane reformer

10.1252/jcej.20we062

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Citations (1)

PENGEMBANGAN KATALIS BERBASIS NiMo ALUMINA UNTUK REAKSI HIDRODEOKSIGENASI MINYAK NABATI MENJADI BIOAVTUR

Jurnal Energi dan Lingkungan (Enerlink) (2015)

Bralin Dwiratna Soebagjo Soebagjo

Catalysts NiMoP/γ-Al O -B O have been successfully synthesized by impregnation method. The 2 3 2 3catalyst was developed to process of vegetable oil hydrodeoxygenation (HDO). The effect of theaddition of boron and phosphorus on the activity and selectivity was studied in this research . Inaddition , the determination of appropriate operating conditions were also studied in order to obtainproducts with good conversion and selectivity. The research was conducted on the preparation of thehydrodeoxygenation catalyst , test the activity and selectivity of hydrodeoxygenation catalysts, andcatalysts characterization using BET , XRD and AAS . To determine the performance of the catalyst ,the hydrodeoxygenation catalysts were tested their activity and selectivity which took place in a batchreactor at a pressure of 20-60 bar and a temperature of 320-360 ° C. The composition of products wereanalyzed by using a Gas Cromatography . From the implementation of HDO reaction of vegetable oilwith NiMoP( 0.6 % )/γ- Al O - B O (1.7 %) catalyst, the value of conversion obtained was 81.45 % at 60 2 3 2 3o bar operating pressure conditions and temperature 360 C .Keywords: vegetable oil , hidrodeoksigenasi , catalyst Nimo - γalumina

Hydrodeoxygenation

Bar (unit)

10.29122/elk.v11i2.1580

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KOH Activated-Biochar from Oil Palm Solid Wastes Via Pyrolysis for Energy Storage Application

Jurnal Ilmiah Teknik Kimia (2024)

Galuh Wirama Murti Nurdiah Rahmawati Novio Valentino Hikmat Hikmat Bagus Alif Firmandoko

As the leading exporter of the oil palm in the world, Indonesia has an environmental issue regarding to the increasing oil palm solid wastes. In order to utilize this lignocellulosic wastes into an inexpensive supply of carbon-based material, biochar from empty fruit bunch (EFB), palm kernel shell (PKS), oil palm frond (OPF), and oil palm trunk (OPT) was produced via slow pyrolysis with KOH as activation agent. The slow pyrolysis was conducted with a temperature of 600oC, a heating rate of 10oC/min, held for 30 min, and atmospheric pressure. This study examines the physico-chemical characterization of all oil palm solid wastes and biochars by using ultimate analysis, water and ash content, Fourier Transform Infrared (FTIR) spectrometer, surface area using Brunauer-Emmet-Teller (BET), and surface morphology using Scanning Electron Microscope (SEM). The higher biochar yields were obtained by PKS and EFB with 30% and 35.79% which have a higher ash content, lignin content, and residual solid char. OPT and PKS biochars exhibit high surface area (467.49 m2/g and 386.85 m2/g) with a high carbon content of 75.64% and 70.22%, respectively. Electrochemical performances of OPT and PKS biochar were also evaluated and the cyclic voltammogram showed the response of current to potential. The results of OPT and PKS biochars had shown a promising raw materials as bio-carbon black which have a well-developed structure of morphology, high surface area, and high carbon content.

Palm kernel

Carbon fibers

Specific surface area

Residual oil

BET theory

Charcoal

10.32493/jitk.v8i1.37710

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The Effect of Activated Carbon Pellet on Hydrothermal Decarboxylation of Palm Olein into Renewable Diesel

Evergreen (2023)

Desy Septriana Unggul Priyanto Novio Valentino Sekar Kumala Desi Restu Siti Nursa'adah

Renewable diesel from hydrogenated palm olein can substitute fossil diesel.This study used an activated carbon pellets catalyst in a 500-ml autoclave to decarboxylate palm olein hydrothermally.The experiment was conducted at 330-400 °C, the catalyst-feed ratio was 0.7, and the water-palm olein (palm cooking oil) weight ratio was 4 to 1. GC-MS and standard alkane and alkene characterized liquid products, while GC-TCD identified gas products.Renewable diesel's highest yields are 13.24% and 3.15% for samples with and without activated carbon pellets catalysts at 370 °C.In conclusion, activated carbon pellets increase renewable diesel recovery in hydrothermal decarboxylation.

Pellet

Decarboxylation

10.5109/7151737

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Computational prediction of green fuels from crude palm oil in fluid catalytic cracking riser

International Journal of Renewable Energy Development (2023)

Agus Prasetyo Nuryadi Widodo Wahyu Purwanto Windi Susmayanti Himawan Sutriyanto Bralin Dwiratna

Fluid catalytic cracking could convert crude palm oil into valuable green fuels to substitute fossil fuels. This study aimed to predict the phenomenon and green fuels yield in the industrial fluid catalytic cracking riser using computational fluid dynamics. A three-dimensional transient simulation using the Eulerian-Lagrangian with the multiphase particle-in-cell is to investigate reactive gas-particle hydrodynamics and the four-lump kinetic network model with the rare earth-Y catalyst for crude palm oil cracking behaviors. The study results show that the fluid and catalyst velocity profile increase in the middle of the riser reactor because the cracking reaction process that produces OLP and Gas products has a lighter molecular weight. The endothermic reaction causes the temperature profile to decrease because the heat of the reaction comes from the catalyst. This analysis shows that the simulation accurately predicts green fuel products from crude palm oil. As a result, the crude palm oil conversion, organic liquid product yield, and Gas yield correspond to 70 wt%, 28.8 wt%, and 27.5 wt%, respectively. Compared to the experimental study, the computational prediction of yield products showed good agreement and determined the optimal riser dimension. The methodology and results are guidelines for optimizing the FCC riser process using CPO.

Fluid catalytic cracking

Particle (ecology)

Endothermic process

10.14710/ijred.2023.54032

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Characterization and evaluation of oil palm solid waste as green carbon materials

AIP conference proceedings (2023)

Galuh Wirama Murti Atti Sholihah Bralin Dwiratna Bagus Alif Firmandoko Joni Prasetyo

Characterization

Carbon fibers

10.1063/5.0173256

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