PROSPECT FOR OBTAINING BIODIESEL USING BABASSU OIL (Orbignya martiniana) AND SOYBEAN OIL (Glycine max) USING IONIC LIQUID AS A CATALYST
The use of ionic liquids is an interesting alternative to improve chemical processes with economic and ecological objetives can these be used in biodiesel synthesis. They can replace the homogeneous basic catalysts (NaOH and KOH) that impact the environment in the biodiesel purification stage. Ionic liquids present significant advantages, improves reaction process and can be used either as solvents or catalysts, with the possible reuse in the process, so they have attracted great interest in the production of biofuels. The study aims to carry out a prospecting on the use of ionic liquids to obtain biodiesel. The research used national patent database (INPI) and international (USPTO, CIPO, JPO), theses and dissertations (CAPES) and scientific articles (Science Direct, Web of science, Scopus) for the search accomplished in the period from 2011 to 2015. The results in the number of patents, articles, theses and dissertations show the progress in researches on this new class of chemicals for the production of biofuels. The C10L and C11C classification found on the basis of WIPO gave more occurrences for biofuels terms, use of additives, oils and fatty acids used in the transesterification reaction. In reference to the number of patents deposited in INPI, research in theses and dissertations there is a number not as significant, suggesting further studies on the catalytic behavior of the ionic liquid in the organic synthesis.