Application of meso-tetrakis(4-carboxyphenyl)porphine_Kain Industrial Additives

Background and overview^[1][2]

Meso-tetrakis(4-carboxyphenyl)porphine is a porphyrin compound and an organic chemical raw material.

Preparation^[1]

Synthesis of meso-tetrakis(4-carboxyphenyl)porphine: Add 150 mL propionic acid, 2.8 mL pyrrole and 6.57 g methyl p-toluate into a 500 mL round-bottomed flask, and heat to reflux in a dark environment After 30 minutes, cool the reaction solution to room temperature, filter, and wash the solid obtained by filtration with 1 mol/L KOH aqueous solution and 1 mol/L hydrochloric acid (the solid obtained by filtration is meso-tetrakis (4-carboxyphenyl) porphine tetramethyl ester, After treatment with KOH, the ester is converted into potassium salt, and after treatment with HCl, the potassium salt is converted into carboxylic acid) to obtain meso-tetrakis (4-carboxyphenyl) porphine.

Apply^[2-3]

CN201910151603.4 discloses a porphyrin palladium-based metal organic framework material with excellent photocatalytic performance and its preparation method and application. The preparation process of the porphyrin palladium-based metal organic framework material is: first, meso-tetrakis(4-carboxyphenyl)porphine and palladium salt react to generate meso-tetrakis(4-carboxyphenyl)porphine palladium, (4-Carboxyphenyl)porphine palladium and cobalt salt undergo a hydrothermal reaction in a double ionic liquid to generate porphyrin palladium-based metal organic framework materials (MOFs materials). Compared with other MOFs materials, the MOFs material of the present invention contains a porphyrin structure, which has good light absorption and can utilize sunlight more effectively. The MOFs material of the present invention catalytically reduces CO₂ to produce CO The performance is better and the conversion rate of CO₂ is higher.

CN201910796815.8 provides an anti-freeze cracking pavement. The technical solution is as follows: it includes a cushion layer, a base layer and a surface layer laid sequentially upward in the vertical direction. The surface layer is paved with anti-freeze cracking asphalt. The anti-freeze cracking asphalt includes the following components by mass: 100 parts of asphalt; 25-35 parts of medium-tetrakis (4-carboxyphenyl) porphine, 200-300 parts of coarse aggregate; 100-200 parts of fine aggregate. By adding meso-tetrakis (4-carboxyphenyl) porphine to the asphalt, the brittleness point of the anti-freeze cracking asphalt is effectively reduced, so that the asphalt surface layer poured with anti-freeze cracking asphalt can withstand colder weather and is less prone to cold shrinkage of the surface layer. A condition that results in cracking of the road surface.

Main reference materials

[1] [Chinese invention] CN201711114219.4 A type A3B monomercaptoporphyrin compound and its preparation method and use

[2] CN201910151603.4 A porphyrin palladium-based metal organic framework material with excellent photocatalytic performance and its preparation method and application

[3] CN201910796815.8 Anti-freeze cracked pavement