title: Synthesis of Terephthalic Acid by p-Cymene Oxidation using Oxygen: Toward a More Sustainable Production of Bio-Polyethylene Terephthalate.
abstract: The synthesis of terephthalic acid from biomass remains an unsolved challenge. In this study, we conducted the selective oxidation of p-cymene (synthesized from biodegradable terpenes, limonene, or eucalyptol) into terephthalic acid over a Mn-Fe mixed-oxide heterogeneous catalyst. The impact of various process parameters (oxidant, temperature, reaction time, catalyst amount, oxygen pressure) on the selectivity to terephthalic acid was evaluated, and some mechanistic aspects were elucidated. An unprecedented synthesis of biobased terephthalic acid (51 % yield) in the presence of O2is reported.
authors.affiliation: Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania.
authors.forename: Florentina
authors.initials: F
authors.lastname: Neaţu
authors.affiliation: Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania.
authors.forename: Geanina
authors.initials: G
authors.lastname: Culică
authors.affiliation: Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania.
authors.forename: Mihaela
authors.initials: M
authors.lastname: Florea
authors.affiliation: Department of Organic Chemistry, Biochemistry and Catalysis University of Bucharest, Faculty of Chemistry, 4-12 Regina Elisabeta Bvd., 030016, Bucharest, Romania.
authors.forename: Vasile I
authors.initials: VI
authors.lastname: Parvulescu
authors.affiliation: Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136, Bologna, Italy.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Cavani
mesh_terms: D018533:Biomass; D002384:Catalysis; D000081007:Cymenes; D039821:Monoterpenes / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010795:Phthalic Acids / Q000138:chemical synthesis*; D013696:Temperature
chemical_list: D000081007:Cymenes; D039821:Monoterpenes; D010795:Phthalic Acids; C007210:4-cymene; C011363:terephthalic acid; D010100:Oxygen
keywords: carboxylic acids; heterogeneous catalysis; iron; manganese; oxidation