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All Journal Seminar Nasional Teknik Kimia Kejuangan
Tatang Hernas Soerawidjaja
Program Studi Teknik Kimia, FTI, ITB, Jl. Ganesha No.10, Bandung
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science

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The Effect of Catalyst Support on the Bimetallic Ni-Ag Hydrogenation Catalyst Activity Tedi Hudaya; Nita Ardelia Jairus; Tatang Hernas Soerawidjaja
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Hydrogenation is the addition reaction of hydrogen into double bounds molecules that are very important in chemical industry. Nickel, cheaper but less active than platinum and palladium, is widely used as a hydrogenation catalyst.  Non-fossil source of hydrogen can be derived from formic acid decomposition reaction aided by a silver catalyst. Although the activity of nickel and silver are normally less than noble metals, the combination with   appropriate support are expected to produce catalysts which can compete with the more expensive noble metals. The purpose of this research is to find out which support that gives the best hydrogenation activity in Ni-Ag bimetallic catalyst system. Support used in this research were TiO2, g-Al2O3, and activated C with mole ratio Ni:Ag varied as 2:1, 3:1, and 4:1. Hydrogenation experiments conducted using kemiri sunan (Reutealis trisperma) oil with formic acid as H source, using a supported catalyst for 5 hours. The experimental results showed that all synthesized catalysts had good and comparable activities, capable of lowering the iodine value by about 32%. Catalyst with TiO2 support gave the best activity, followed by activated C, and g-Al2O3.  Meanwhile, the metal loading that yielded the best result was Ni:Ag of 4:1 . Prolonged hydrogenation lasted for 10 hours did not cause further hydrogenation reaction.
Preliminary Study of Formic Acid Synthesis from Biomass Tedi Hudaya; Felicia Kristianti; Tatang Hernas Soerawidjaja
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Hydrogen is considered as one of the energy sources can provide emission-free application. However, one of the difficulties of using hydrogen is the coherent characteristic of hydrogen, that obstruct the efficient and safe storage of the hydrogen. Therefore concepts for the liquid phase storage under ambient condition using formic acid have received many attention, so that formic acid synthesis methods that is economically feasible and enviromentally friendly is need to be known. One of them is oxidation sorbitol to form formic acids. This research will begin with synthesis of H5PV2Mo10O40 as catalyst. Preliminary experiments is done by varying reaction time (15,20, 25, 30, 60, 120, 180 minutes) to get the most favorable time. The main experiments will be done by varying pressure, temperature, and the catalyst’s in the exact reaction time. All of the oxidation reaction product then is analyzed using HPLC. The results show that the conversion of sorbitol is usually achieved at almost 100%, and the maximum yield that is achieved (75,40%) at 25 bar, 1400C, and 0,6% w/w. The effects of temperature to conversion of sorbitol and yield of formic acid is significant. The effect pressure to conversion and yield is significant at 1200C, but slightly unsignificant at the other variation. The effects of catalyst concentration is unsignificant to conversion of sorbitol, but is significant to the yield of formic acid
Co-Authors Felicia Kristianti Hudaya, Tedi Nita Ardelia Jairus