Open AccessASSESSMENT OF THE "MICRO-GREENNESS" OF SYNTHESES USING THE GREEN STAR
Author(s) -
Rita C. C. Duarte,
M. Gabriela T. C. Ribeiro,
Adélio A. S. C. Machado
Publication year - 2014
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.5935/0100-4042.20140168
Subject(s) - star (game theory) , astronomy , environmental science , physics , astrophysics
This article reports a study to increase the overall greenness of chemical syntheses for first-year university laboratories. The separate evaluation of the micro-greenness of the three stages of synthesis (reaction, isolation and purification) using the Green Star (GS) was implemented and their respective contribution to overall greenness was investigated for two examples: syntheses of cobalt (III) tris(acetylacetonate) and potassium nitrilosulfonate. Results showed that the post-reaction (work-up) steps are the most problematic for overall greenness. Greenness optimization can be achieved by combining the greenest procedures for each step obtained from different protocols available in the literature