Terephthalic Acid
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. “Half-Sandwich”/RuII Anticancer Complexes Containing Triphenylphosphine and p-Substituted Benzoic Acids
Mononuclear and binuclear RuII/arene/triphenylphosphine complexes with p-substituted benzoic acid derivatives were prepared and characterized. These monocationic complexes of type [Ru(η6-p-cymene)(PPh3)L] (L = benzoic acid (1), p-hydroxybenzoic acid (2), p-nitrobenzoic acid (3) and terephthalic acid (4)) were characterized using various techniques, such as
J. Braz. Chem. Soc.. Publicado em: 2020-11
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2. A Practical Fluorescence-Based Screening Protocol for Polyethylene Terephthalate Degrading Microorganisms
We propose a practical, low-cost and selective fluorescence-based protocol adapted to identify polyethylene terephthalate (PET) degrading microorganisms. The microbial hydrolysis of PET nanoparticles was monitored by 2-hydroxyterephthalate, a fluorophore produced in situ after radical hydroxylation of terephthalic acid (TPA), the final hydrolysis product, by
J. Braz. Chem. Soc.. Publicado em: 2018-06
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3. Recovery of Terephthalic Acid by employing magnetic nanoparticles as a solid support
Abstract The aim of this research work is focused on the improvement of Terephthalic acid recovery from PET wastes by using organically modified nano-Fe3O4@Cyanuric Chloride as the solid support. The performance of organically modified nano magnetic was examined in detail and the obtained results were compared with the unsupported reaction data. Required re
Polímeros. Publicado em: 15/03/2018
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4. Investigations on Preparation and Characterization of Certain Copolyesters
In this paper, we report on the synthesis and characterization of high molecular weight copolyesters from Terephthalic acid, 1, 4 butane diol and Succinic acid /Sebacic acid through a two step process of melt polycondensation using titanium tetra butoxide as catalyst. The synthesized aromatic-aliphatic random copolyesters were characterized by means of FTIR,
Mat. Res.. Publicado em: 26/02/2016
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5. Analysis of impurities in crude and highly-purified terephthalic acid by capillary electrophoresis
Neste trabalho, foi desenvolvido um método simples e rápido, utilizando eletroforese capilar (CE), para a análise simultânea de 4-carboxibenzaldeído (4-CBA), ácido p-toluóico (pTOL) e ácido benzóico (BZ), em lotes industriais de ácido tereftálico cru (CTA) e purificado (PTA). As condições eletroforéticas de análise foram: tampão tetraborato a
Journal of the Brazilian Chemical Society. Publicado em: 2004-06
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6. Síntese e caracterização de complexos contendo núcleos dimetálicos de rutênio e ligantes dicarboxilatos / Synthesis and characterization of complexes containing dinuclear ruthenium and dicarboxylate ligands
Compostos do tipo [M2(O2CR)4] com ligação múltipla direta entre os centros metálicos apresentam importância do ponto de vista teórico bem como da química aplicada a diversas áreas. Recentemente tem havido um grande interesse voltado, especialmente, para o design de novos materiais construídos com base nestas unidades dimetálicas. O principal objeti
Publicado em: 2001
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7. Avaliação da estabilidade termica de embalagem de polietileno tereftalato (PET) : estudo dos oligomeros e substancias volateis
The thermal stability of PET food packaging materiais was evaluated under severe heating conditions at several exposure times, by means of the determination of PET oligomers and volatile substances released under heating. The first step for determination of thermal stability of the polymer was carried out heating PET films at 150°C for 30 and 60 minutes, 26
Publicado em: 1997
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8. Degradation of Phthalic Acids by Denitrifying, Mixed Cultures of Bacteria
Mixed cultures of bacteria, enriched from aquatic sediments, grew anaerobically on all three isomers of phthalic acid. Each culture grew anaerobically on only one isomer and also grew aerobically on the same isomer. Pure cultures were isolated from the phthalic acid (o-phthalic acid) and isophthalic acid (m-phthalic acid) enrichments that grew aerobically on
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9. Chlortetracycline and Oxytetracycline Residues in Poultry Tissues and Eggs
A pad-plate method of assaying residual amounts of chlortetracycline (CTC) and oxytetracycline (OTC) using Bacillus cereus 213 was used to determine amounts of antibiotic left in tissues and eggs of poultry fed 1,000 and 200 ppm of CTC and OTC in basal feed mixtures. The effects of various methods of cooking the tissues and eggs and the potentiating effect o
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10. Biodegradation of Aliphatic-Aromatic Copolyesters by Thermomonospora fusca and Other Thermophilic Compost Isolates
Random aliphatic-aromatic copolyesters synthesized from 1,4-butanediol, adipic acid, and terephthalic acid (BTA) have excellent thermal and mechanical properties and are biodegradable by mixed cultures (e.g., in compost). Over 20 BTA-degrading strains were isolated by using compost as a microbial source. Among these microorganisms, thermophilic actinomycetes
American Society for Microbiology.
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11. The Role of Benzoate in Anaerobic Degradation of Terephthalate
The effects of acetate, benzoate, and periods without substrate on the anaerobic degradation of terephthalate (1,4-benzene-dicarboxylate) by a syntrophic methanogenic culture were studied. The culture had been enriched on terephthalate and was capable of benzoate degradation without a lag phase. When incubated with a mixture of benzoate and terephthalate, su
American Society for Microbiology.
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12. Identification and Isolation of Anaerobic, Syntrophic Phthalate Isomer-Degrading Microbes from Methanogenic Sludges Treating Wastewater from Terephthalate Manufacturing
The microbial populations responsible for anaerobic degradation of phthalate isomers were investigated by enrichment and isolation of those microbes from anaerobic sludge treating wastewater from the manufacturing of terephthalic acid. Primary enrichments were made with each of three phthalate isomers (ortho-, iso-, and terephthalate) as the sole energy sour
American Society for Microbiology.