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

Xin Zhang, Pengwei Qiao, Xuan Ji, Junbin Han, Lili Liu, Brandon Weeks, Qingwei Yao, Zhao Zhang

Research output: Contribution to journalArticle

Abstract

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.
Original languageEnglish
Pages (from-to)974-981
JournalACS SUSTAINABLE CHEMISTRY & ENGINEERING
StatePublished - Aug 2013

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