Adipic Acid Essay Research Paper SWOSU ICER98submitted — страница 2

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reaction continues, as in the cyclohexane path of reaction. The change of the benzene to cyclohexane is done by simply hydrogenation of the benzene. The benzene can also be change into phenol, and the reaction process that pathway. The production of adipic acid with carboalkoxylation of butadiene is new and only in the experimental stage, but may hold promise for a less expense production. Many alternate processes have been researched; but so far, the oxidation of cyclohexane with nitric acid is the most efficient. So in turn, it is the most used. Summary of reactions Environmental Effects The adipic acid industry has a detrimental impact on the environment by letting out an enormous amount of greenhouse gas. Estimated current global production of adipic acid is at 1.8 million

metric tons per year. The largest use is to make the common product nylon. The greenhouse gas is specifically N2O. The N2O is produced during two oxidization steps in the production of adipic acid. The large amount of adipic acid production per year, due to the common product that it produces, has led to an enormous amount of this greenhouse gas to be emitted. There are several specific facts about why N2O is so bad for the environment. First, N2O is a radioactively and chemically active trace gas believed to contribute to the recent increase in the Earth’s surface temperature. N2O absorbs reflected infrared radiation. Also, estimated atmospheric lifetime of N2O is 150 years. Last, the estimated impact of anthrogenic N2O is a 6% increase in ozone depletion rate. N2O from the

production of adipic acid is harmful to the environment because of its heat absorbing and ozone depleting qualities. Producers have recognized N2O production as making a measurable contribution to global warming and ozone depletion. Manufacturers of adipic acid are attempting to reduce emmisions by forming inter-industry groups, which share information, and the use of different technologies. They have come up with three technology options. The first option is improvement for N2O decomposition in special designed boilers. The second option is conversion of N2O to recoverable NO. The third option is the catalytic dissociation of N2O to N2 and O2. References: Bill’s part. (Production Section) Y.R Chin, PEP abstract: Adipic acid, September 1996.Copyright 1998 SRI consulting.

http://piglet.sri.com/CIN/NovemberDecember96/Article11.html Authors: A. Castellan, J.C.J. Bart and S. Cavalllaro Journal: Catalysis Today, 9 (1991) pg. 237-254 Title of article: “Industrial Production and Uses of Adipic Acid”. Darren’s part (Environmental Section) Authors: R.A. Reimer, C.S. Slaten, M. Seapan, M.W. Lower, and P.E.Tomlinson Journal: Environmental Progress, vol 13, No.2, May 1994. Title of article: “Abatement of N2O Emissions Produced in the adipic acid industry” Bibliography References: Bill’s part. (Production Section) Y.R Chin, PEP abstract: Adipic acid, September 1996.Copyright 1998 SRI consulting. http://piglet.sri.com/CIN/NovemberDecember96/Article11.html Authors: A. Castellan, J.C.J. Bart and S. Cavalllaro Journal: Catalysis Today, 9 (1991) pg.

237-254 Title of article: “Industrial Production and Uses of Adipic Acid”. Darren’s part (Environmental Section) Authors: R.A. Reimer, C.S. Slaten, M. Seapan, M.W. Lower, and P.E.Tomlinson Journal: Environmental Progress, vol 13, No.2, May 1994. Title of article: “Abatement of N2O Emissions Produced in the adipic acid industry”