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All Journal EKSAKTA: Journal of Sciences and Data Analysis Indonesian Journal of Chemistry IJCER (International Journal of Chemistry Education Research)
Maisari Utami
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Islam Indonesia, Jl. Kaliurang Km. 14, Yogyakarta 55584, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Environmental Science Materials Science & Nanotechnology

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Catalytic Synthesis of Diethanolamide Surfactant from Used Cooking Oil Maisari Utami; Karna Wijaya; Akhmad Syoufian; Satyagraha Hakim Wicaksono
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 1, ISSUE 2, August 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol1.iss2.art7

Abstract

The synthesis of diethanolamide surfactant from used cooking oil was systematically studied using modified zeolite as catalyst. The activated zeolite was obtained by dispersing natural zeolite in sulfuric acid (H2SO4) solution.  Potassium carbonate (K2CO3) was loaded into activated zeolite by wet impregnation method. The methyl ester obtained from transesterification reaction of used cooking oil was refluxed with diethanolamine (C4H11NO) solution over K2CO3/zeolite catalyst in the production of diethanolamide surfactant. The amidiation reaction over K2CO3/zeolite effectively produced 92% of diethanolamide surfactant with the highest selectivity of methyl oleate. Diethanolamide surfactant showed stable foam and emulsion with the reduction of surface tension as much as 3.3 dyne/cm.
Synthesis of SO42–/ZrO2 Solid Acid and Na2O/ZrO2 Solid Base Catalysts Using Hydrothermal Method for Biodiesel Production from Low-Grade Crude Palm Oil Sri Setyaningsih; Maisari Utami; Akhmad Syoufian; Eddy Heraldy; Nasih Widya Yuwono; Karna Wijaya
Indonesian Journal of Chemistry Vol 22, No 1 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.65404

Abstract

Biodiesel is a renewable energy source that can be produced through esterification as well as transesterification reactions. This work presents a series of zirconia catalysts synthesized by hydrothermal method on various concentrations in acidic (H2SO4 0.3, 0.5, and 0.7 M) and basic (NaOH 1, 2, 3, and 4 M) solution to get a catalyst with the highest acidity or basicity. Characterizations of the catalysts were performed by FTIR, XRD, SEM-EDX, surface area analysis, acidity, and basicity test. The most active acid catalyst activity was evaluated for the esterification of low-grade crude palm oil (LGCPO), while the solid base catalyst was utilized for the transesterification reaction. The solid acid catalyst of 0.7 M SO42–/ZrO2 60 °C; 24 h was denoted as the most active acid catalyst with a total acidity of 1.86 mmol g–1, while 4 M Na2O/ZrO2 60 °C; 24 h catalyst was considered as the solid base catalyst with the highest total basicity of 3.75 ± 0.12 mmol g–1. The optimized acid catalyst exhibited a 31 times higher acidity than commercial ZrO2. The concentration of free fatty acids (FFA) decreased to 68.87% in the esterification reaction. The solid base catalyst of 4 M Na2O/ZrO2 60 °C; 24 h successfully converted LGCPO into biodiesel by 68.55% through a transesterification reaction.
Virtual Laboratory in Chemistry: Recent Information and Communication Technologies (ICT) in Chemistry Practical Course Imam Sahroni; Wiyogo Prio Wicaksono; Maisari Utami; Lutfia Isna Ardhayanti
IJCER (International Journal of Chemistry Education Research) VOLUME 4, ISSUE 2, October 2020
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol4.iss2.art4

Abstract

The covid-19 has impacted many sectors to change the way the run their activity, including the learning and teaching activity at a higher education. Many departments at the educational institution have been affected seriously due to the physical laboratory closing, especially for the activity at chemistry laboratory. The physical laboratory has been transformed to the virtual laboratory in order to accommodate the student to study the experimental course. By using the internet and communication technology (ICT) innovation in teaching and learning method, the student can still have the experiment and continue the lecture through online system. This effort may help the student to still play an active role while participating in the learning process.
Co-Authors Akhmad Syoufian Akhmad Syoufian Eddy Heraldy Imam Sahroni Karna Wijaya Karna Wijaya Lutfia Isna Ardhayanti Satyagraha Hakim Wicaksono Sri Setyaningsih Wiyogo Prio Wicaksono Yuwono, Nasih Widya