Increased carbon dioxide (CO₂) emissions from anthropogenic activities are a contributing factor to the growing global warming worldwide. The economical method to recover and effectively reuse CO₂ is through adsorption and absorption. In this study, CO₂ is absorbed into the solution of sodium hydroxide having various concentrations (0.01, 0.1, 0.5, 1.0, 3.0 and 5.0 N), and the impact of the solution pH on the various product formation was observed. The resultant products formed at different pH of the absorbing solution are sodium carbonate at pH 10, Trona at pH 9, and sodium hydrogen carbonate at pH 8. The products formed are confirmed through X-ray diffraction analysis. After pH optimization, the sodium hydrogen carbonate formed at pH 8 is converted into sodium formate through hydrogenation in the presence of nickel ferrite catalyst at 80 °C and atmospheric pressure. The sodium formate produced is then used as a precursor to synthesize formic acid upon simple reaction with sulfuric acid. A reaction % age yield of 79 ± 0.2% formic acid is noted. Condensed formic acid vapors are later analyzed, using a high performance liquid chromatography for the qualitative analysis.

人为活动产生的二氧化碳（CO ₂）排放增加是导致全球范围内全球变暖加剧的一个因素。回收和有效再利用CO ₂的经济方法是通过吸附和吸收。在这项研究中，CO ₂将其吸收到具有各种浓度（0.01、0.1、0.5、1.0、3.0和5.0 N）的氢氧化钠溶液中，并观察到溶液pH对各种产物形成的影响。在吸收溶液的不同pH下形成的最终产物是pH 10的碳酸钠，pH 9的Trona和pH 8的碳酸氢钠。通过X射线衍射分析确认形成的产物。在对pH进行优化之后，将在pH为8的碳酸氢钠在80℃和大气压下在镍铁氧体催化剂存在下通过氢化转化为甲酸钠。然后在与硫酸简单反应后，将生成的甲酸钠用作合成甲酸的前体。注意到79％±0.2％甲酸的反应％老化产率。稍后分析冷凝的甲酸蒸气，