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All Journal Jurnal Rekayasa Proses International Journal of Renewable Energy Development Journal of Mathematical and Fundamental Sciences Media Mesin: Majalah Teknik Mesin Journal of Environment and Sustainability Pendas : Jurnah Ilmiah Pendidikan Dasar JMM (Jurnal Masyarakat Mandiri) Jurnal Rekayasa Proses Gorontalo Journal of Infrastructure and Science Engineering International Journal of Economics Development Research (IJEDR) Surya Teknika: Jurnal Ilmiah Teknik Mesin Jurnal Pendidikan Teknik Mesin Undiksha Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Neraca Abdi Masya Surya Teknika: Jurnal Ilmiah Teknik Mesin Prosiding University Research Colloquium Aceh International Journal of Science and Technology Jurnal Teknologi Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Journal of Community Empowerment Jurnal Sains Materi Indonesia Jurnal Rekayasa Proses Prosiding Seminar Nasional Keguruan dan Pendidikan (SNKP)
Imam Prasetyo
Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Transportation Other

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Modification of HZSM-5 with Phosphotungstate, Silver, and Cobalt to Enhance Catalytic Reaction of Bioethanol to Bioethylene Risnawati, Dhea Atika; Pradana, Nova Yoga; Rochmadi, Rochmadi; Prasetyo, Imam; Saputra, Daffa Dewa; Pranamuda, Hardaning; Tandio, Sugianto; Ariyanto, Teguh
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 2 Year 2026 (August 2026)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20604

Abstract

Developing an optimal catalyst formulation is a critical challenge in expanding sustainable ethylene production and utilization as a chemical intermediate product. Metal oxide impregnation (silver nitrate (AgNO3), cobalt nitrate (Co(NO3)2), and phosphotungstic acid (H3PW12O40)) was used to enhance the catalytic performance of HZSM-5 by increasing active sites and acidity. The preparation of the catalyst was performed by the impregnation of various metals and amounts of loading particles inside the pores of HZSM-5. The particles were impregnated by incipient wetness impregnation and followed by calcination to obtain Ag/HZSM-5, Co/HZSM-5, and W/HZSM-5 catalysts. Characterization techniques, including N2 adsorption-desorption, SEM, and XRD, were used to analyze the catalyst properties. Catalytic performance was evaluated in a packed-bed reactor under varying reaction conditions at WHSV 1.8 h-1. The aim of this research is to identify optimal catalyst formulations that exhibit superior activity in both conversion and selectivity towards ethylene production. Modified HZSM-5 catalysts incorporating Ag, Co, and W exhibited enhanced catalytic performance for bioethanol dehydration to bioethylene, attributed to optimized acidic sites, pore structure, and metal synergy. The 1%W/HZSM-5 catalyst demonstrated superior ethylene conversion (98.2%) and selectivity (99.88%) at 300 ℃. Increasing tungsten loading up to 2% impacted the conversion of bioethanol. Copyright © 2026 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).
Synthesis of Ternary Nanocomposites of MnO2/PANI/Maxsorb and their Performance as an Electrode Material for Supercapacitors Nur'aini, Aprilianti; Prasetyo, Imam; Ariyanto, Teguh
Journal of Mathematical and Fundamental Sciences Vol. 57 No. 2 (2025)
Publisher : Directorate for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2025.57.2.2

Abstract

Increasing performance of supercapacitors can be achieved by using a composite of electrode materials. Nevertheless, selecting appropriate materials and determining the optimal combination composition remain significant challenges. In this research, a ternary composite of MnO2/polyaniline (PANI)/Maxsorb was studied. The combination of Maxsorb, PANI, and MnO₂ is a unique feature of this research, with Maxsorb acting as a porous structural framework; PANI enhancing electrical conductivity; and MnO₂ providing high pseudocapacitance. The ternary material was prepared by impregnation of MnO2 and PANI into the pores of Maxsorb carbon in a two-sequence procedure, i.e., (i) incipient wetness impregnation of Mn(NO3)2 into porous carbon followed by calcination to obtain MnO2/Maxsorb, and (ii) in situ polymerization of aniline monomer in the MnO2/Maxsorb, hence obtaining the final ternary nanocomposite of MnO2/PANI/Maxsorb. The electrochemical test using H2SO4 electrolyte (1 M) revealed that the ternary material outperformed single porous carbon or PANI as well as their binary nanocomposite in terms of properties such as energy density, power density, and capacitance. The ternary material had a specific surface area of around 2,078 m2 g-1, containing microporous and mesoporous structures. The material featured a specific capacitance up to 500 F g-1 and a power density of 37.6 kW kg-1 as well as an energy density of 62.69 Wh kg-1.
Co-Authors AA Sudharmawan, AA Achmad Vandian Nur, Achmad Vandian Ade Kurniawan Ainun Ikbal, Alif Andini, Susi Amalia Arifiyanto, Muhammad Aryudha, Fikky Atmanegara, Fenda Ramadhani Baginda Harahap Baihaki, Iqbal Bayu Wicaksono Briliansyah, Arditya Budi Satria Panandita BUDIYONO Budiyono Budiyono Cahyono, Rochim Bakti Dewi, Alfa Yuliana Dwi Kurniawan, Ari Dwiyani, Atikah Evila Purwanti Sri Rahayu, Theresia FADHOLI, MUHAMMAD Faizi, Ahmad Nur Farid Afrian, Muhammad Farlina Hapsari Faza, Aji Hufron Fazarima, Fitroh Firdan, Muhammad Firman Faradisi Firmansyah Firmansyah Gala, Kyla Amalia Hardaning Pranamuda Hardhianti, Meiga Putri Wahyu Henra Gurning Hery Widijanto Hufron Faza, Aji Ilham Ifliadi Indryani ineswenty mendrofa, lola Irfan Setiawan, Muhammad Irfan Zidni1, Muhammad Jeon, Sanghee Khalilullah, Aulia Rafif Khoirul Anam KHOIRUL ANAM Kholidah, Nur Kurniawan, Anggi Kurniawan, M. Risqi M. Ilham Fredian Syah , M. Ilham Marwan Effendy Maskhuri, Muhammad Masruroh, Kuni Maulana, Aqiem Maulana, Maisal Ardi Miftahul F., Ahmad Muhammad Rifqi Muhammad Sofwan Musyahar, Ghoni Ngudhi Raharjo, Rias Nulhakim, Lukman Nuniek Nizmah Fajriyah Nur Faqih, Mochamad Nur'aini, Aprilianti Nurfaizi, Ahmad Nurhadi, A'an Perdana, Muhammad Faza Pohan, Adekasna Rosadi Prabowo, Joko Setyo Pradana, Nova Yoga Prasetyo, Yuda Prayogi, Yoga Priyanto, Teguh Pujiono, Akhmad Putra Pardana, Arfian R.Kurniawan Dwi Septiady Raharjo, Rias Ngudhi Rahmadani, Trias Ayu Rakhman, Dani Risnawati, Dhea Atika Rizkika, Afiana Khusnul Rochmadi Rochmadi Rozana, Monna Saputra, Daffa Dewa Saputro, , Iwan Saputro, Yoyo Sarjito Sarto Septiady, R Kurniawan Dwi Setiawan, Feri Setiawan, Muhammad Irfan Setiawan, Sofian Setyo Prabowo, Joko Shafiyurrhaman, Muhammad Faiz Shofa Rijalul Haq Siregar, Fhikry Ahmad Halomoan Suhaidi T Towijaya Tandio, Sugianto Teguh Ariyanto Ubaidillah, Akhmad Urmatul Waznah Valentino, Febi Wicaksono, Bhayu Widi Astuti Wiratni Budhijanto Yulianti, Fina Yuliyanti , Fina Zaky Khusniati, Isna Zuhria, Faida