Abstract: It is a problem to be solved by the present invention to provide an oxidation catalyst which, in oxidation of a compound, can efficiently effect oxidation using oxygen in the air as an oxygen source and can be used repeatedly. The above-mentioned problem was solved by an activated carbon in which the BET specific surface area S determined by a nitrogen adsorption method and the amount of surface oxygen which will leave in the form of carbon monoxide OCO (% by weight) satisfy formula (I) 4000<S×OCO.

Abstract: An object of the invention is to provide an adsorbent having high adsorbability per unit volume and a high adsorption rate as an adsorbent for water treatment or medical care and to provide an adsorbent capable of completely adsorbing an aimed substance within a short time as an adsorbent for medical care. The desired adsorbent is an adsorbent produced from a phenol resin as a starting material and having 0.10 to 0.60 ml/g of volume of fine pores with diameters in a range from 0.02 to 10 ?m, a specific surface area in a range from 800 to 3000 m2/g, and an average particle diameter in a range from 0.1 to 0.8 mm. The adsorbent is produced by conducting carbonization of the phenol resin as a starting material at 350 to 550° C., then heating up to 700 to 950° C. at a rate of 5 to 20° C./min, and successively carrying out activation of the obtained carbonized product.

Abstract: It is a problem to be solved by the present invention to provide an oxidation catalyst which, in oxidation of a compound, can efficiently effect oxidation using oxygen in the air as an oxygen source and can be used repeatedly. The above-mentioned problem was solved by an activated carbon in which the BET specific surface area S determined by a nitrogen adsorption method and the amount of surface oxygen which will leave in the form of carbon monoxide OCO (% by weight) satisfy formula (I) 4000<S×OCO.

Abstract: The present invention provides a hydrocarbon material with a high ion adsorption ability (specific capacitance) per unit volume of the electrode obtained by heating a starting material mainly composed of polysaccharides, which are easy to obtain and inexpensive. More specifically, the hydrocarbon material can be obtained by heating a polysaccharide-based raw material together with a heat reaction auxiliary under an inert gas atmosphere, and has the following properties: (a) the hydrogen/carbon ratio (atomic ratio) is within the range of 0.05 to 0.5; (b) the specific surface area determined by the BET method is in the range of 600 to 2000 m2g; (c) the mesopore capacitance determined by the BJH method is in the range of 0.02 to 1.2 ml/g; (d) the total pore volume measured by the MP method is in the range of 0.3 to 1.25 ml/g; and (e) the bulk density of an electrode obtained using the hydrocarbon material is 0.60 g/ml or higher.