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2639046 
Journal Article 
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 
Zhang, Xin; Qiao, P; Ji, X; Han, J; Liu, L; Weeks, BL; Yao, Q; Zhang, Z 
2013 
1 
8 
974-981 
WOS:000322863100014 
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. 
Sustainable chemistry; Benzoic acid industrial residue; 9-Fluorenone; 6H-Benzo[c]chromen-6-one; Biphenyl carboxylic acids 
IRIS
• Cobalt
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