Abstract: The present invention relates to a process for preparing phenolic polymers utilizing Coprinus cinereus peroxidase. More particularly, the present invention relates to a process for preparing phenolic polymers by polymerizing phenolic monomers with Coprinus cinereus peroxidase instead of using typical peroxidase which essentially requires the use of toxic formalin or peroxidase of plant origin which is very costly and easily deactivated by hydrogen peroxide in the polymerization of phenolic monomers, wherein the polymerization is conducted in the presence of a polar organic solvent under mild reaction conditions of atmospheric temperature and pressure to economically produce desired phenolic polymers having excellent water and chemical resistances with high yield.

Abstract: Disclosed are a nano-sized palladium-doped anion exchange resin catalyst or palladium-doped cation exchange resin catalyst, a preparation method thereof and a method of removing dissolved oxygen in water using the same. The palladium-doped anion exchange resin catalyst exhibits high dissolved oxygen removal efficiency of 99˜99.99%, and the palladium-doped cation exchange resin catalyst exhibits high dissolved oxygen removal efficiency of at least 97%, and further, dissolved oxygen in water can be removed through a catalytic reaction without the use of additional chemicals, thereby discharging no secondary pollutants. This catalyst is environmentally friendly, can be continuously developed, and can prevent the loss of the palladium catalyst, which is expensive, and thus can be efficiently applied to various fields, including semiconductors, power plants, microbial culture, food and pharmaceutical production, and the fermentation industry.

Abstract: The present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by liquid-phase oxidation. More particularly, the present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by oxidation in acetic acid as solvent with oxygen-containing gas in the presence of cobalt/manganese/bromine complex catalyst, wherein nickel and carbon dioxide in an appropriate amount are added to increase an activity of cobalt/manganese/bromine complex catalyst. Especially nickel has a synergistic effect with carbon dioxide and maximize the to formation of the desired product having the corresponding carboxylic groups to the number of alkyl groups in a reactant.