Authors: Rosana de Cassia de Souza Schneider Luciano Roni Silva Lara Marieli Milanesi Ceolin Jonas Alvaro Kaercher Manuella Schneider
Publish Date: 2013/01/06
Volume: 15, Issue: 6, Pages: 977-985
Abstract
In the vegetable oil chemical industry hydrogenation is one of the most important processes An alternative method for vegetable oil hydrogenation is the use of catalytic transfer hydrogenation CTH which can utilize organic molecules as hydrogen donors at ambient pressure These alternative processes should be optimized in relation to the variables required for a good conversion and impacts should also be known to be minimized An assessment of the environmental impact of laboratory scale chemical processes is an important tool to improve the technological aspects of a process increased yields reduced production times lower costs and it can also lead to the creation of a cleaner technology Using the Leopold Matrix we have succeeded in developing a more efficient and cleaner process for the CTH of castor oil using Raney Ni as a catalyst and cyclohexene or isopropanol as a hydrogen donor solvent The results of the technical and environmental assessments showed that the extent of conversion for the unsaturation reaction was high 99 and the environmental impact of the process could be significantly reduced to create a cleaner technology It was found after process optimization that the remaining environmental impacts were negative 6748 local 7895 temporary 9533 direct 8012 and reversible 9532
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