ChemicalBook CAS DataBase List 2-hydroxyterephthalic acid

2-hydroxyterephthalic acid synthesis

13synthesis methods

Product Name:2-hydroxyterephthalic acid
CAS Number:636-94-2
Molecular formula:C8H6O5
Molecular Weight:182.13

100-21-0 Synthesis

100-21-0
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$6.00/25g

636-94-2
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$7.00/100mg

Yield:636-94-2 35%

Reaction Conditions:

with photocatalytic titania-coated hollow glass microspheres in waterIrradiation;

Steps:

2.3. Photocatalytic and analytical methods
General procedure: HGM-TiO2 suspension was prepared by suspending HGM-TiO2into 100 mL TA aqueous solution in a Pyrex cylindrical reactor(12×1 in.,～150 mL capacity, with a vented Teflon screw top).The suspension was magnetically stirred and purged with oxygengently for 15 min prior to radiation and during the reaction, in orderto maintain the adsorption/desorption equilibrium. The suspensionswere irradiated in a Rayonet photochemical reactor (SouthernNew England Ultra Violet Company, http://www.rayonet.org,model RPR-100), equipped with a cooling fan on the bottom andfour phosphor-coated low-pressure mercury lamps (RPR 350 nm,8.34×10-9 Einstein mL-1 s-1). Samples (3 mL) were taken fromthe suspension at given time intervals and immediately filteredthrough a 0.45 m PTFE filter to remove suspended particles priorto analysis.TA is used to selectively trap ?OH and to produce 2-HTA with apercent yield of 35% [25] (Scheme 1). The yield of ?OH is quantifiedby fluorescent measurement of the generated 2-HTA. 2-HTA wasexcited at 315 nm to emit fluorescence at 425 nm [26], which wasmeasured on a Horiba FluoroMax 3 spectrofluorometer.

References:

Jiang, Wenjun;Joens, Jeffrey A.;Dionysiou, Dionysios D.;O'Shea, Kevin E. [Journal of Photochemistry and Photobiology A: Chemistry,2013,vol. 262,p. 7 - 13]

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