Results 71 to 80 of about 9,487 (241)

Selective Synthesis of 1,4-Dialkylbenzenes from Terephthalic Acid

open access: yes, 2010
Terephthalic acid reacts with alkyl halides under Birch conditions to substituted 1,4-cyclohexadienes in high yields and good stereoselectivities. Electrophiles containing ester or nitrile groups undergo a surprising fragmentation under the reaction ...
Andrea Bramborg   +3 more
core   +1 more source

Microwave‐assisted catalytic pyrolysis of textile wastes: Synergistic effects and product characteristics

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study examines the microwave‐assisted catalytic pyrolysis (MACP) of individual and blended textiles (cotton, polyester, nylon 6) using ZnO and a ZnO/natural zeolite catalyst. In a custom‐built microwave reactor operated at 500°C, 1 kW power, and a 15‐min residence time, textile wastes were pyrolyzed.
Peyman Alizadeh   +3 more
wiley   +1 more source

Purification Of Terephthalic Acid By Supercritical Fluid Extraction

open access: yes, 1982
A process for the purification of terephthalic acid comprising (1) contacting an impure terephthalic acid with an amount of supercritical fluid, at a temperature and pressure, and for a period of time, sufficient to dissolve the terephthalic acid and its

core  

Synthesis of Terephthalic Acid by p-Cymene Oxidation using Oxygen: Toward a More Sustainable Production of Bio-Polyethylene Terephthalate

open access: yes, 2016
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 ...
CAVANI, FABRIZIO   +4 more
core   +1 more source

PABRIK TEREPHTHALIC ACID DARI DIMETHYL TEREPHTHALATE DENGAN PROSES HYDROLYSIS [PDF]

open access: yes, 2023
Pre plan of Terephthalate Acid Plant from Dimethyl Terephthalate It is planned for a production capacity of 9,000,000 tons/year. Terephthalic Acid is a monomer of polymer products such as polyester or Polyethylene Terephthalate (PET).
Pratiwi, Shinta Budi
core  

Molecular characterization of urban organic aerosol in tropical India: contributions of primary emissions and secondary photooxidation [PDF]

open access: yesAtmospheric Chemistry and Physics, 2010
Organic molecular composition of PM<sub>10</sub> samples, collected at Chennai in tropical India, was studied using capillary gas chromatography/mass spectrometry.
P. Q. Fu   +4 more
doaj  

Selective Modification of the Product Profile of Biocatalytic Hydrolyzed PET via Product‐Specific Medium Engineering

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The product profile of enzymatically hydrolyzed PET can be modified by medium engineering and thereby adapted to a desired product. TPA, MHET or BHET can be forced as the predominant product using a basic pH (blue), 25 % ethylene glycol (EG) and IsPETasewt (green) or ≥25 % EG and LCCICCG (pink), respectively.
Tobias Heinks   +8 more
wiley   +1 more source

A method for producing terephthalic acid by, Comamonas testosterone DSM6577

open access: yes, 2006
p-Toluic acid was used as a sole source of carbon and energy to screen for a bacterium to produce terephthalic acid. Comamonas testosterone strain DSM6577 can oxidize p-toluic acid to terephthalic acid through sequential reactions catalyzed by a series ...
Xu, JH, Wang, J, Tian, J
core  

Enhancement of terephthalic acid recovered from PET waste using a combination of citric acid and dimethyl sulfoxide extraction

open access: yesSustainable Environment Research
This study aimed to develop an eco-friendly, cost-efficient, and practically viable method for extracting terephthalic acid (H2BDC) from polyethylene terephthalic (PET) waste.
Thi Hong Nguyen, Kung-Yuh Chiang
doaj   +1 more source

Dual‐Stabilized Single‐Site Fe(II) for Catalytic Conversion of CO2 to Propiolic Acid Under Ambient Condition

open access: yesEcoEnergy, EarlyView.
We develop a highly cost‐effective heterogeneous catalyst for efficient CO2 conversion to propiolic acid under mild conditions via a nano‐confined approach with porous MIL support. ABSTRACT Efficient conversion of carbon dioxide to organics has been a promising outlet for value‐added carbon dioxide consumption.
Bin Lei   +6 more
wiley   +1 more source

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