摘要:
The present invention provides a polarized electrode 12 containing mixed activated carbon composed of at least two activated carbons with different specific surface areas, and the specific surface area of the mixed activated carbon is not less than 900 m2/g and less than 1900 m2/g. By setting the specific surface area of the mixed activated carbon to less than 1900 m2/g, the resistance reduction ratio of the polarized electrode 12 rapidly increases.
摘要:
The present invention provides an evaporated fuel gas adsorbent, an evaporated fuel gas trapping apparatus that uses the adsorbent, an activated carbon, and a process for producing the activated carbon. The evaporated fuel gas adsorbent is capable of improving adsorptivity and desorptivity by reliably preventing a temperature rise and a temperature fall caused by heat generated in response to the adsorption and desorption of evaporated fuel gas, is capable of achieving a size reduction of the device, and is capable of being easily produced. The activated carbon has high mechanical strength and high abrasive resistance, has many pores suitable to adsorb an organic solvent, especially, evaporated fuel gas, and has a high packing density. The activated-carbon producing process is industrially advantageous.
摘要:
The invention aims at providing a mercury adsorbent which is optimized in base activated carbon, sulfur amount carried, and heat treatment conditions, and is enhanced in mercury adsorption performance, and a process for producing the adsorbent, which can be put into industrial practice advantageously. The aim is attained by a mercury adsorbent made up of sulfur-carried activated carbon, with which sulfur is carried on activated carbon and which exhibits a sulfur peak top of the temperature of sulfur desorption at 534° C. to 537° C. in a calorimetric curve measured by a differential scanning calorimeter at a temperature rise rate of 10° C./minute under a nitrogen atmosphere, and a process for production of the adsorbent.
摘要:
The present invention provides an evaporated fuel gas adsorbent, an evaporated fuel gas trapping apparatus that uses the adsorbent, an activated carbon, and a process for producing the activated carbon. The evaporated fuel gas adsorbent is capable of improving adsorptivity and desorptivity by reliably preventing a temperature rise and a temperature fall caused by heat generated in response to the adsorption and desorption of evaporated fuel gas, is capable of achieving a size reduction of the device, and is capable of being easily produced. The activated carbon has high mechanical strength and high abrasive resistance, has many pores suitable to adsorb an organic solvent, especially, evaporated fuel gas, and has a high packing density. The activated-carbon producing process is industrially advantageous. The evaporated fuel gas adsorbent comprises an adsorptive material and latent heat storage mediums including containers each of which is made of a flexible film and in each of which a substance that absorbs or releases heat in response to a phase change is encased. The activated carbon is characterized in that a specific surface area calculated by a BET method (multipoint method) in a nitrogen adsorption isotherm determined from a nitrogen adsorption amount at liquid nitrogen temperature is 1000 to 2500 m2/g, in that a half-value width of a D-band peak in the neighborhood of 1360 cm−1 in Raman spectroscopic analysis is 120 cm−1 or less, and in that a half-value width of a G-band peak in the neighborhood of 1580 cm−1 in Raman spectroscopic analysis is 100 cm−1 or less.
摘要:
A high-density evaporated fuel gas adsorbent and process for forming such capable of preventing temperature rise and temperature fall caused with adsorption and desorption of an evaporated fuel gas, capable of stably maintaining adsorbing and desorbing properties of the adsorbent, and capable of preventing a heat storage component from leaking out therefrom. The adsorbent is formed by mixing together microcapsules in each of which a substance that absorbs or releases heat in response to phase change is encased and activated carbon in which pore volume in an average pore diameter of 50 nm to 1000 nm is 0.3 mL/g or more and in which half-value width of a D-band peak in the vicinity of 1360 cm−1 and half-value width of a G-band peak in the vicinity of 1580 cm−1 are both equal to 100 cm−1 or more in a Raman spectroscopic analysis, and by molding these integrally.
摘要:
The present invention provides a polarized electrode 12 containing mixed activated carbon composed of at least two activated carbons with different specific surface areas, and the specific surface area of the mixed activated carbon is not less than 900 m2/g and less than 1900 m2/g. By setting the specific surface area of the mixed activated carbon to less than 1900 m2/g, the resistance reduction ratio of the polarized electrode 12 rapidly increases.
摘要:
The present invention provides an activated carbon produced by a process, which includes: activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid. Another embodiment of the present invention provides an electrode for an electric double-layer capacitor, which includes the above-described activated carbon. Another embodiment of the present invention provides a filter, which includes the above-described activated carbon. Another embodiment of the present invention provides a shaped article, which includes the above-described activated carbon. Another embodiment of the present invention provides a method for producing activated carbon, which includes activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid, to obtain the activated carbon. The acid-processed activated carbon has a strong affinity for water, and is particularly suitable for water purification. Electrodes produced by shaping the acid-processed activated carbon have the advantage of large electrostatic capacity per the unit volume, and are particularly suitable for capacitors.