Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal EKSAKTA: Journal of Sciences and Data Analysis
Jumeri Jumeri
Department of Agroindustrial Technology, University of Gadjah Mada Jl. Flora No. 1, Bulaksumur, Caturtunggal, Depok, Sleman, Yogyakarta 55281
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Materials Science & Nanotechnology

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Green Catalysts Activities of CaO Nanoparticles from Pinctada maxima Shell on Alcoholysis Reaction Kendri Wahyuningsih; Jumeri Jumeri; Wagiman Wagiman
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 18, ISSUE 2, August 2018
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol18.iss2.art4

Abstract

Pinctada maxima shells from West Nusa Tenggara has natural minerals called calcite that can be decomposed into CaO compounds as a green catalyst that heterogeneous, base and environmentally friendly. CaO compounds in the nanometer scale is one option as an alternative substitute or replacement of the use of homogeneous catalysts. The purpose of this study was to test the catalytic activity of CaO compound from the pearl shells (P. maxima) based on particle size. The catalytic activity test has been measured against the percentage of yield of methyl ester produced by alcoholysis reaction. Characterization of nano-CaO compounds has been done using X-ray powder diffraction (XRD), Brunauer Emmett Teller (BET), scanning electron microscope energy-dispersive X-ray spectroscopy (SEM-EDX), transmittance electron microscopy (TEM), while methyl esters has been analyzed using the ASTM method. CaO catalyst on the nanometer-scale have more effective catalytic activity than micrometer scale with the yield percentage of methyl ester obtained are 81,61% and 30,71%, respectively. The results of methyl ester characterization by ASTM method has shown that methyl ester has specification that are close to diesel oil, so it can be used as an alternative or substitution on diesel engine.
Co-Authors Kendri Wahyuningsih Wagiman Wagiman