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Didi Dwi Anggoro
Chemical Engineering Department, Engineering Faculty, Diponegoro University Jl. Prof. Soedarto, SH, Tembalang, Semarang 50239, Telp.(024)7460058
Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health

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Effects of Ion Exchange Process on Catalyst Activity and Plasma-Assisted Reactor Toward Cracking of Palm Oil into Biofuels Istadi Istadi; Luqman Buchori; Didi Dwi Anggoro; Teguh Riyanto; Anindita Indriana; Chusnul Khotimah; Fachmy Adji Pangestu Setiawan
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 2 Year 2019 (August 2019)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.14.2.4257.459-467

Abstract

Biofuels can be produced through a conventional catalytic cracking system and/or a hybrid catalytic-plasma cracking system. This paper was focused on studying effect of Na+ ion exchange to HY-Zeolite catalyst on catalyst performance to convert palm oil into biofuels over a conventional continuous fixed bed catalytic cracking reactor and comparing the catalytic cracking performance when carried out in a continuous hybrid catalytic-plasma reactor. The catalysts were characterized by X-ray Diffraction (XRD) and Bruneuer-Emmet-Teller (BET) surface area methods. The biofuels product were analyzed using Gas Chromatography-Mass Spectrometry (GC-MS) to determine the hydrocarbons composition of biofuels product. From the results, ion exchange process of Na+ into HY-Zeolite catalyst decreases the catalyst activity due to decreasing the number of active sites caused by blocking of Na+ ion. The selectivity to gasoline ranges achieved 34.25% with 99.11% total conversion when using HY catalyst over conventional continuous fixed bed reactor system. Unfortunately, the selectivity to gasoline ranges decreased to 13.96% and the total conversion decrease slightly to 98.06% when using NaY-Zeolite catalyst. As comparison when the cracking reaction was carried out in a hybrid catalytic-plasma reactor using a spent residual catalytic cracking (RCC) catalyst, the high energetics electron from plasma can improve the reactor performance, where the conversion and yield were increased and the selectivity to lower ranges of hydrocarbons was increased. However, the last results were potential to be intensively studied with respect to relation between reactor temperature and plasma-assisted catalytic reactor parameters. Copyright © 2019 BCREC Group. All rights reserved 
Reusability and Stability Tests of Calcium Oxide Based Catalyst (K2O/CaO-ZnO) for Transesterification of Soybean Oil to Biodiesel Istadi Istadi; Udin Mabruro; Bintang Ayu Kalimantini; Luqman Buchori; Didi Dwi Anggoro
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 1 Year 2016 (April 2016)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.11.1.413.34-39

Abstract

This paper was purposed for testing reusability and stability of calcium oxide-based catalyst (K2O/CaO-ZnO) over transesterification reaction of soybean oil with methanol to produce biodiesel. The K2O/CaO-ZnO catalyst was synthesized by co-precipitation method of calcium and zinc nitrates followed by impregnation of potassium nitrate. The fresh and used catalysts were tested after regeneration. The catalysts were characterized by Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and BET Surface Area in order to compare the catalyst structure between the fresh and used catalysts. The catalyst testing in transesterification proses was carried out at following operating conditions, i.e. catalyst weight of 6 wt.%, oil to methanol mole ratio of 1:15, and temperature of 60 oC. In addition, metal oxide leaching of K2O/CaO-ZnO catalyst during reaction was also tested. From the results, the catalysts exhibited high catalytic activity (80% fatty acid methyl ester (FAME) yield after three-cycles of usage) and acceptable reusability after regeneration. The catalyst also showed acceptable stability of catalytic activity, even after three-cycles of usage. 
Effect of Co and Mo Loading by Impregnation and Ion Exchange Methods on Morphological Properties of Zeolite Y Catalyst Didi Dwi Anggoro; Nur Hidayati; Luqman Buchori; Yayuk Mundriyastutik
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 1 Year 2016 (April 2016)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.11.1.418.75-83

Abstract

Coal tar can be used as an alternative raw material for the production of liquid fuels, such as: gasoline and diesel through hydrogenation and cracking process. Hydrogenation and cracking process requires a catalyst which has metal components for hydrogenation reaction and acid components for cracking reaction. In this study, the Co/Zeolite Y and Co-Mo/Zeolite Y catalysts were prepared by impregnation and ion exchange methods. Characterizations of the catalysts were carried out by X-Ray Diffraction (XRD) and gravimetric acidity. The catalysts were tested for coal tar conversion to liquid fuel under various temperatures, amount of catalyst and hydrogen flow rates in a fixed bed flow reaction system. Liquid fuels products were analyzed by gas chromatography (GC). The XRD Spectra indicated that the addition of Co and Mo metals did not affect catalysts structure, however it alters the percentage of crystallinity. The addition of Co metal using impregnation method caused reduction in crystallinity, while the addition of Mo caused improvement of crystallinity. The Co-Mo/Zeolite Y catalyst with highest crystallinity was obtained by loading using ion exchange method. The addition of Co and Mo metals caused increasing acidity. However, the increasing composition of Co and Mo loaded on Zeolite Y catalyst decreased the yield of liquid fuels from coal tar. It can be concluded that the yields of liquid fuels and the composition of gasoline fractions from hydrocracking of coal tar were highly dependent on  acidity of the catalyst. 
Co-Authors Afriza Ni'matus Sa'adah Anindita Indriana Anisa Widia Utami Antonio Giovanno Aprilina Purbasari Arif Budiarto Bintang Ayu Kalimantini Cantika Aulia Salsabila Chusnul Khotimah Diah Anggraeni Jatraningrum Dian Cahyaningrum Dyah Hesti Wardhani Dyah Hesti Wardhani Fachmy Adji Pangestu Setiawan Fadhil Rifqi P Faleh Setia Budi Fathoni, Moch Zaenal FatmaTsaniya Chamdani Febio Dalanta Ganish Eko Mayndra Giveni Christina Silaen H Hadiyanto H. Hadiyanto Hartuti Purnaweni Herawati Oktaviani Herawati Oktavianty Hermawan, Hermawan Herry Santosa I. Istadi Indro Sumantri Kamsi Nur Oktavia Kevin Aprilio Luqman B Luqman Buchori Lutfi Af’idatul Kamilah Melissa Justine Renjaan Muhamad, Theobroma Guntur Nerfiana Fradevi Nita A Nita Aryanti Nor Aishah Saidina Amin NUR HIDAYATI Nur Hidayati P Purwanto Pakpahan, Agnes J. Pakpahan, Andre W. S. Priyo Atmaji Putri Anggraeni Resti Nur Utami Riko Rikardo Putra Riko Rikardo Putra Riskatama Atmaji Rispiandi Rispiandi Riyanto, Teguh Rohmadona H S Subandriyo Saputra, Roni Ade Sari Octavianingrum Setia Budi S Setia Budi Sasongko Sigit B Silviana Silviana Slamet Supriyadi Teguh Riyanto Udin Mabruro Wahyu Bahari Setianto Wahyu Bahari Setianto Wibawa, Muhammad Hanif Dzikri Yayuk Astuti Yayuk Mundriyastutik Zaqiyah Addarojah Zulfikar Muriadiputra