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All Journal Jurnal Kimia Riset Indonesian Journal of Chemistry Jurnal Abdi: Media Pengabdian Kepada Masyarakat
Ahmadi Jaya Permana
Departemen Kimia, Fakultas Sains Dan Teknologi, Universitas Airlangga
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media Social Sciences Other

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The Influence of pH Values on the Crystallite Size of ZnO by Solvothermal Synthesis Ahmadi Jaya Permana; Dian Wulandari; Hartati Hartati; Harsasi Setyawati; Mochammad Zakki Fahmi
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.782 KB) | DOI: 10.20473/jkr.v2i2.6430

Abstract

 Zinc oxide (ZnO) is a semiconductor material that widely used in various applications due to its unique properties. Synthesis of ZnO by solvothermal method has been conducted with controlled pH values. The variations of pH value were 10, 11 and 12 by adjusting NaOH content. Crystall structure of the synthesis products after heat treatment at 110oC and 600oC has characterised by X-ray Diffratometer (XRD). Crystallite size of ZnO was measured by Scherrer equation. Crystall phase of ZnO has been observed on all pH value variations at 110 oC with 22,98-37,06 nm of crystallite size, whereas ZnO has been observed on all pH value variations at 600 oC with 41,39-71,77 nm of crystallite size.Keywords: ZnO, pH values, crystallite size, solvothermal
Sintesis Dan Karakterisasi H-Aluminosilikat Sebagai Katalis Sintesis Biogasoline Dari Asam Oleat Deasi Adhiani Farida; Abdulloh Abdulloh; Ahmadi Jaya Permana
Jurnal Kimia Riset Vol. 4 No. 2 (2019): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v4i2.16897

Abstract

ABSTRACT          Aluminosilicate can be used for cracking reaction. In this study, catalyst of H-aluminosilicate has been synthesized by hydrothermal method with ratio molar Si/Al is 20. The characterizations has been performed by XRD, FTIR and acidity test. Characterization by XRD showed that catalyst of H-aluminosilicate have structure amorphous, while FTIR showed Si-O-Al bond at 457 cm-1. The acidity test showed that catalyst of H-aluminosilicate have Brønsted acid site 0.0272 mmol/g and Lewis acid site 0.0005 mmol/g. Oleic acid was cracking at 340 oC for 3 and 5 hours. The product has been analyzed by GC-MS not showed compound forming biogasoline.Keywords: H-aluminosilicate, biogasoline, oleic acid ABSTRAK          Aluminosilikat dapat digunakan sebagai katalis dalam reaksi prengkahan. Pada penelitian ini telah dilakukan sintesis katalis H-aluminosilikat melalui metode hidrotermal dengan rasio Si/Al sebesar 20. Karakterisasi yang telah dilakukan meliputi uji XRD, FTIR, dan keasaman.Hasil XRD menunjukkan katalis H-aluminosilikat berbentuk amorf, sedangkan pada FTIR menunjukkan ikatan Si-O-Al pada bilangan gelombang 457 cm-1. Uji situs asam menunjukkan katalis H-aluminosilikat memiliki jumlah asam Brønsted sebesar 0.0272 mmol/g dan jumlah sisi asam Lewis sebesar 0.0005 mmol/g. Proses perengkahan asam oleat telah dilakukan pada suhu 340oC selama 3 jam dan 5 jam. Produk cracking yang diuji dengan GC-MS tidak menunjukkan pembentukan senyawa biogasoline.Kata kunci: H-aluminosilikat, biogasoline, asam oleat
Ion Impregnation Effect of Fe, Cu, Cr-attributed Mordenite on Stearic Acid Cracking Abdulloh Abdulloh; Ulfa Rahmah; Satya Candra Wibawa Sakti; Alfa Akustia Widati; Ahmadi Jaya Permana; Rochadi Prasetya; Musbahu Adam Ahmad; Mochamad Zakki Fahmi
Indonesian Journal of Chemistry Vol 22, No 3 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.71126

Abstract

The improvement in the design of mordenite-based catalysts focuses on the present study to fulfill the massive demand for bio-aviation fuel (BAF) as renewable energy. Modification of the mordenite through ionic impregnation of Fe, Cu, and Cr, has supported the mordenite to perform with better efficiency and activity in catalyzing the cracking process of stearic acid. The adjustment on catalytic activity was carried out by simply reacting the catalyst with stearic acid at 190 °C and investigating cracking products with Gas Chromatography-Mass Spectroscopy. The results of the GC-MS test of the cracking product showed the formation of alkane-alkene and aromatic compounds. BAF was selectively obtained (30.27%) when the reaction was catalyzed by FeCuCr/mordenite catalyst. The BAF derived from FeCuCr/mordenite contained hydrocarbons that include xylene, mesitylene, dodecane, tridecane, tetradecane, and pentadecane. However, reduced selectivity was realized (19.85%) when the reaction was catalyzed by nano FeCuCr/mordenite. Its hydrocarbon constituents include benzene, tetradecane, and pentadecane compounds.
EDUKASI PEMANFAATAN BAHAN ALAM SEBAGAI OBAT TRADISIONAL UNTUK PENCEGAHAN PENYAKIT DAN PERAWATAN KESEHATAN Fatiha Khairunnisa; Qurrota A’yuni; Kautsar Ul Haq; Harsasi Setyawati; Ahmadi Jaya Permana; Rico Ramadhan; Yanuardi Raharjo; Mulyadi Tanjung; Sri Sumarsih; Hartati; Handoko Darmokoesoemo
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2022): Vol.8, No.1(2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/abdi.v8i1.15268

Abstract

One of the ways to maintain the personal health during an emergency condition as the current COVID-19 is the utilization of natural ingredients. It can be processed into traditional medicines. Jamu as a type of traditional medicine as well as natural heritage has been widely used by Indonesian to prevent the body from disease and to treat the health issue. This community service aimed to provide education for society regarding the chemical content and efficacy of natural ingredients such as empon-empon. The techniques to process it into traditional medicine for family healthcare was also delivered. The activity was carried out through face-to-face meeting while still applying the health protocols. The level of success and usefulness of the activity was known from the response of the participants. In general, the PKM activities in the scheme of theory and practical session has been carried out well. The materials presented in theory session was understandable. Meanwhile, the techniques used in practical session was easy to be replicated. The activity was expected to increase the knowledge and skills of the society in terms of natural ingredients that have good chemical content and the techniques to process them into nutritious drinks for families.
Co-Authors Abdulloh Abdulloh Alfa Akustia Widati Deasi Adhiani Farida DIAN WULANDARI Fatiha Khairunnisa Handoko Darmokoesoemo Harsasi Setyawati Hartati Hartati Hartati Hartati Kautsar Ul Haq Mochamad Zakki Fahmi Mochammad Zakki Fahmi Mulyadi Tanjung Musbahu Adam Ahmad Qurrota A’yuni Rico Ramadhan, Rico Rochadi Prasetya Satya Candra Wibawa Sakti Sri Sumarsih Ulfa Rahmah Yanuardi Raharjo, Yanuardi