FORMIC ACID PRODUCTION THROUGH OTOXIDATION OF GLUCOSE ROUTE

• Main Author: Muh Nashirudin Latif, Edo
• Format: Theses
• Language: Indonesia
• Subjects: Teknik kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/63466
• Institution: Institut Teknologi Bandung

Formic acid can be used as a hydrogen carrier intermediate in hydrogen storage system. Research to study the production of renewable-based formic acid needs to be done to fulfill the needs of formic acid by concerning the sustainability aspects. Renewable glucose-based formic acid can be potentially produced in Indonesia, which has abundant renewable resources. Glucose can be converted into formic acid through the catalytic oxidation reaction with transition metals as the catalyst. The transition metals that have been shown to carry out this glucose oxidation reaction are the copper metal ion (Cu+) and the manganese ion (Mn2+). This research of the oxidation of glucose to formic acid uses oxygen in the air as an oxidizing agent with a copper and manganese catalyst complex with lactate ligands as a homogeneous catalyst under atmospheric pressure conditions. The use of oxygen in the air and atmospheric reaction conditions will make production costs cheaper. The oxidation reaction was carried out by refluxing in a three-neck flask with a condenser, then the air was injected using an air compressor. The reaction conditions, temperature and catalyst concentration, were varied to determine their effect on the reaction and formic acid yield. The best variation was produced at 75oC, the ratio of Cu/Mn-Lactate 1/1 catalyst, for 8 hours resulted in glucose conversion 10.22%, formic acid yield 0.024% with selectivity 1.38% In addition, to increase the yield, a methanol-water system solvent is used, methanol functions to capture formic acid, which is formed into methyl formate, to avoid further oxidation of formic acid to carbon dioxide. This methyl formate will be separated easily because it has a boiling point 31.8oC and is captured by a washing bottle containing KOH. And the resulting glucose conversion of 47.3%, 0.16% formic acid yield with a selectivity of 2%. And with the addition of the Cu-Fe-Mn catalyst system resulted in glucose conversion of 16.75%, the formic acid yield of 2.7% with a selectivity of 16.1%. In addition, this study also tested the influence of other factor variables that will affect the results of the autoxidation reaction performance.