Terephthalic acid synthesis at higher concentrations in high-temperature liquid water. 1. Effect of oxygen feed method
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منابع مشابه
Terephthalic Acid Synthesis at Higher Concentrations in High-Temperature Liquid Water. 1. Effect of Oxygen Feed Method
We conducted terephthalic acid (TPA) synthesis from p-xylene in high-temperature liquid water (HTW) at 3008C. The p-xylene concentration at the reaction condition was 0.2 mol L, which is the highest to date in research that achieved at least 80 mol % yields of TPA in HTW. Pure oxygen gas was the oxidant. Increasing the MnBr2 catalyst concentration increased the rate of TPA formation only slight...
متن کاملTerephthalic Acid Synthesis at Higher Concentrations in High-Temperature Liquid Water. 2. Eliminating Undesired Byproducts
We synthesized terephthalic acid (TPA) from p-xylene at an initial concentration above its solubility limit in high-temperature liquid water (HTW). The nominal p-xylene loading at the reaction conditions was 0.4 mol L , which is the highest reported to date for generation of high TPA yields ([70 mol %) in HTW. The presence of two liquid phases during the reaction did not appear to accelerate th...
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The asymmetric unit of the title compound, C(10)H(8)N(2)·C(8)H(6)O(4), consists of one half-mol-ecule of each moiety, 4,4'-bipyridine (bpy) and terephthalic acid (bdc), both being located on crystallographic inversion centers. They are linked together via strong inter-molecular O-H⋯N hydrogen bonds, forming infinite chains propagating along [1-21]. The chains are further connected through C-H⋯O...
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In the title compound, 2C(8)H(6)O(4)·C(10)H(8)N(2), the 4,4'-bipyridine mol-ecule is located on an inversion centre. In the crystal structure, strong inter-molecular O-H⋯N hydrogen bonds between the terephthalic acid and 4,4'-bipyridine mol-ecules lead to the formation of chains with graph-set motif C(2) (2)(8) along the diagonal of the bc plane.
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ژورنال
عنوان ژورنال: AIChE Journal
سال: 2009
ISSN: 0001-1541,1547-5905
DOI: 10.1002/aic.11718