摘要:
The present disclosure provides a process for oxidation of p-xylene to terephthalic acid. Recovery of fluid medium and valuable chemicals in carried out using p-xylene as fluid medium which is also the starting material. The recovered stream containing p-xylene, acetic acid and other valuable chemicals is recycled to the oxidation step. The process disclosed in the present disclosure is energy efficient and cost effective.
摘要:
The present disclosure also provides a process for preparing the ionic liquid compound of Formula (I) which involves preparing an ionic salt complex represented by Formula [(NR1R2R3)iM1]n+[Xj]n− by mixing an amine represented by Formula NR1R2R3 and a metal salt represented by formula M1Xj; and mixing the ionic salt complex and a metal salt represented by formula M2Yk to obtain the ionic liquid compound.
摘要:
A method for preparing an ionic compound by mixing at least one compound of formula CxAy-zH2O (1) with at least one hydrogen donor and heating the mixture obtained is provided. The said ionic compound remains in a physical state selected from the group consisting of liquid and semisolid at a temperature below 150° C., preferably below 125° C.
摘要翻译:提供了通过将至少一种式C x A y-z H 2 O(1)化合物与至少一个氢供体并且加热获得的混合物来制备离子化合物的方法。 所述离子化合物在低于150℃,优选低于125℃的温度下保持选自液体和半固体的物理状态。
摘要:
The present disclosure provides a composition for preparing aryl carboxylic acid; said composition comprising: at least one ionic liquid, at least one catalyst, at least one non-oxidizable polar solvent, and at least one oxidizable multi-alkylated arylene compound with no two successive ring positions bearing alkyl group. The present disclosure also provides a process for preparing aryl carboxylic acid.
摘要:
The present disclosure provides a process for recovering and recycling a catalyst from the mother liquor generated during the production of aromatic carboxylic acids. The process comprises treating the mother liquor with an alkyl aromatic compound and further treating the first aqueous layer obtained with an ionic liquid to obtain a catalyst rich aqueous mixture. The catalyst rich aqueous mixture is recycled to the oxidation reactor.
摘要:
The present disclosure provides a composition for preparing terephthalic acid; said composition comprises p-Toluic acid in an amount of 0.05% to 4% with respect to the total mass of the composition; at least one catalyst in an amount of 0.02% to 2.5% with respect to the total mass of the composition; at least one ionic liquid in an amount of 0.04% to 50% with respect to the total mass of the composition; at least one carboxylic acid solvent; and p-xylene. The present disclosure also provides a process for preparing terephthalic acid.