Industrial residues formed in the industrial production of benzoic acid by cobalt-catalyzed oxidation of toluene are traditionally disposed as waste materials and often burnt or buried. It therefore may become a significant source of environmental pollution. In this report, we describe simple techniques to obtain high value conjugated aromatic compounds, including 9-fluorenone, 6H-benzo[c]chromen-6-one, biphenyl-3-carboxylic acid, and biphenyl-4-carboxylic acid, from benzoic acid industrial residue using inexpensive alkalis and acids. The separation methods involve simple and mild procedures with high economic effectiveness and low environmental contamination.
|Journal||ACS SUSTAINABLE CHEMISTRY & ENGINEERING|
|State||Published - Aug 2013|
Zhang, X., Qiao, P., Ji, X., Han, J., Liu, L., Weeks, B., Yao, Q., & Zhang, Z. (2013). Sustainable Recycling of Benzoic Acid Production Waste: Green and Highly Efficient Methods To Separate and Recover High Value-Added Conjugated Aromatic Compounds from Industrial Residues. ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 974-981.