10 articles in this issue
Harno Dwi Pranowo,Karna Wijaya,Bambang Setiaji,Rhano Setyan Janu
The computational chemistry calculation to determine the stabilization energy and ligand-ligand repulsion energies of [Co(NH3)n]2+ system was done by using LANL2DZ basis set for Co2+ and 6-31G* basis set for NH3 at the level theory of unrestricted H... see more
Triyono Triyono
The oxidation of carbon monoxide by oxygen using two catalysts prepared by two different methods has been investigated. In the first method, catalyst prepared by immersing ?-Al2O3 into the hexa-chloroplatinic acid solution at 80oC for 4 h, resulted Pt/?-A... see more
Karna Wijaya,Iqmal Tahir,Ahmad Baikuni
The synthesis of Cr2O3-pillared montmorillonite (CrPM) and its usage for host material of p-nitroaniline have been conducted. The Cr2O3-pillared montmorillonite clays was prepared by a direct ion exchange method. First, the polyhydroxychromium as a pillar... see more
Karna Wijaya,Ani Setyo Pratiwi,Sri Sudiono,Emi Nurahmi
The thermal and acid stability of the bentonite clays (Na- and Ca-bentonite) have been tested. The thermal stability testing has been carried out by heating 5 gram of the clays for five hours at 200, 300 and 500 °C respectively, meanwhile acid stabi... see more
Wega Trisunaryanti
Optimation of time and catalyst/feed ratio in catalytic cracking of waste plastics fraction to gasoline fraction using Cr/Natural Zeolite catalyst has been studied.The natural zeolite was calcined by using nitrogen gas at 500 oC for 5 hours. The chromium ... see more
Sri Hastini
At the Takasaki-site of JAERI, an AVF cyclotron has been constructed for advanced radiation technology research. The cyclotron produces extracted beams particularly light and heavy ions of proton as well as deutron. Target chamber is available for product... see more
Endang Astuti,Winarto Haryadi,Sabirin Matsjeh
Palm oil contains unsaturated fatty acids that can be oxidated and can make rancidity of the palm oil. One of the trigliserida degradation products is free fatty acid. The usage of triethylammine (TEA) in the polar-nonpolar mix solvents could enhance the ... see more
Tutik Dwi Wahyuningsih,Tri Joko Raharjo,Iqmal Tahir
Synthesis of sunscreen compound 3,4-dimethoxy isoamyl cinnamic from clove oil and fusel oil has been done. The majoring component of clove oil that is eugenol has been isolated, followed with several chemical processes i.e. isomerization into isoeugenol, ... see more
Iqmal Tahir,Karna Wijaya,Titik Subarni
Modeling of several alkyl salicylates based on electronic transition by using semiempriical mechanical quantum ZINDO/s calculation has been done. Object of these research were assumed only alkyl salicylates of C4 (butyl) until C8 (octyl) homologue with 4-... see more
Karna Wijaya,Iqmal Tahir,Armand Blaschette,Oliver Mours,Peter G Jones
The compound was prepared by dissolving 2-(phenylamino)pyridine (0.52 g ; 3.0 mmol) and di(methanesulfonyl)amine (0.51 g; 3.0 mmol) in 5 mL methanol. Slow partial evaporation of the solvent at low tempertaure (-30 oC) gave a yield of 0.66 g (64%) and crys... see more