Isopropanol is available in the market and is produced by the indirect hydration of propylene in a multistage process that offers very high product purity and consistent quality. The primary advantage of this process is that the acetone produced is free from trace aromatic compounds, particularly benzene as in the cumene route. Benzene forms explosive mixtures with air and is acutely toxic as well as brings harms to health. Cumene route to synthesis acetone produce ethanol as coproduct, the ethanol produced is a waste as the main product required is acetone. Besides, CHP produced from the oxidation of cumene is explosive and dangerous.
In our experiment, we were able to synthesize isopentyl acetate by heating a reaction mixture of isopentyl alcohol with excess acetic acid. We were then able to purify the isopentyl alcohol by using the methods of extraction, drying, and distillation. Our synthesis and purification of isopentyl acetate was fairly successful in allowing us to obtain and analyze banana oil. Questions 1. In addition to using excess acetic acid to form the ester, the reaction can also be influenced by removing water from the reaction mixture.
.1.1 Adipic Acid Adipic acid, also known as hexanedioic acid is a mildly toxic, white crystalline solid that is slightly soluble in water. It has a molecular formula of C6H10O4. The annual production rate of adipic acid worldwide is 2.5 million tons . The majority of adipic acid produced is used as a precursor for manufacturing of nylon. In the pharmaceutical industry, adipic acid is used in the production of formulation matrix tables to obtain pH independent release for both weakly basic and acidic drugs .
For chlorination SOCl2 used. We have synthesized carboxamide derivatives using NTAA and 3-(3-benzyl-4,5-dihydroisoxazol-5-yl)pyridine and 3-benzyl-5-(3-nitrophenyl)-4,5-dihydroisoxazole by coupling reaction using dichloromethane as a solvent and the product obtained in 1.5-2 hours by stirring only. After synthesis of these carboxamide derivatives , The compounds are characterized by FTIR, 1HNMR, CMR, UV-Visible and mass spectral analysis. The analysis data is in good correlation with structure of
To indicate the separation effect for different ratio of p-xylene to methyl acetate more clearly, Fig. 4 shows the dependence of selectivity on the water/acetic acid mass ratio in the initial mixture for various different ratios of p-xylene to methyl acetate in the initial mixture. These results reveal the general capability of mixed solvent to extract acetic acid from the aqueous phase at different feed composition. As mentioned earlier, methyl acetate has been put up in this industrial operation, since it was available as the byproduct of terephthalic acid production. As can be seen in Fig.4, a higher ratio of p-xylene to methyl acetate can produce higher selectivity of acetic acid against water.
Theories In this experiment set-up, acetic anhydride is added to salicylic acid in the presence of a catalyst, concentrated sulphuric acid. Acetylsalicylic acid and acetic acid are then produced, after the mixture is heated. Esterification is the chemical process of ester formation. Esters are produced when alcohols and carboxylic acids are heated in the presence of an acid catalyst, and in this case, acetylsalicylic acid is produced when salicylic
2. Experimental 2.1. Catalyst preparation The CuMnOx catalyst was prepared by the co-precipitation method, the aqueous solution manganese acetate (Mn(CH3COO)2.4H2O) and copper (II) nitrate (Cu(NO3)2.2.5H2O) were premixed by stirring for 1 hour. After the proper mixing of the copper nitrate and manganese acetate solution, it was added to the aqueous KMnO4 solution by a burette under the stirring conditions. After dropped completely the copper manganese solution into the precipitant ageing for 2h, then filtered, washing several times with hot deionized water.
When a carboxylic acid and alcohol was being mixed an ester was formed. In this first reaction (part A) the acid used was salicyclic acid while the alcohol that was used was methyl alcohol. A small amount of concentrated sulphuric acid about 3-4 drops was added and used as a catylst. Sulphuric acid helps to remove the water from the products formed. The mixture was placed in a water bath (90ºC) for 10 minutes to allow the reaction to be completed.
Byproduct produces from this reaction by weight percentage (% wt) base on acrylonitrile are acetonitrile 2-4 % and hydrogen cyanide 14 to 18 %. This byproduct can be market for any other purposed and there are still demands in the chemical industry. The reaction product will be absorb in