PER- AND POLYFLUOROALKYL COMPOUND-ADSORBING ACTIVATED CARBON

[OBJECT] To provide a per- and polyfluoroalkyl compound-adsorbing activated carbon having a high collection rate of per- and polyfluoroalkyl compounds in an atmospheric sample, and a filter body using the same.[ACHIEVING MEANS] A per- and polyfluoroalkyl compound-adsorbing activated carbon for desor...

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Main Authors TANIYASU, SACHI, YOKOI, MAKOTO, YAMASHITA, NOBUYOSHI, KOUSAKA, TSUTOMU, SHIMAMURA, KODAI, ASANO, TAKUYA, HORI, CHIHARU
Format Patent
LanguageEnglish
French
Published 25.02.2021
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:[OBJECT] To provide a per- and polyfluoroalkyl compound-adsorbing activated carbon having a high collection rate of per- and polyfluoroalkyl compounds in an atmospheric sample, and a filter body using the same.[ACHIEVING MEANS] A per- and polyfluoroalkyl compound-adsorbing activated carbon for desorbably adsorbing per- and polyfluoroalkyl compounds in an atmospheric sample, the activatedcarbon including an activated carbon adsorbent having a BET specific surface area of 900 m2/g or more, a sum (Vmic) of a volume of micropores of 1 nm or less of 0.35 cm3/g or more, a sum (Vmet)of a volume of mesopores of 2 to 60 nm of 0.02 cm3/g or more, a volume difference (Vs) betweenthe micropore volume (Vmic) and the mesopore volume (Vmet) of 0.45 or more, and a surface oxide amount of 0.10 meq/g or more. [Problème] Fournir : un charbon actif adsorbant un composé per-et polyfluoroalkyle ayant un taux de collecte élevé d'un composé per-et polyfluoroalkyle dans un échantillon d'air; et un filtre utilisant celui-ci. [Solution] Ce charbon actif adsorbant un composé per-et polyfluoroalkyle qui est destiné à adsorber par adsorption un composé per-et polyfluoroalkyle dans un échantillon d'air, et est composé d'un matériau absorbant le charbon actif ayant : une surface spécifique BET d'au moins 900 m2/g; une somme des volumes (Vmic) de micropores d'au plus 1 nm d'au moins 0,35 cm3/g; une somme des volumes (Vmet) de mésopores de 2 à 60 nm d'au moins 0,02 cm3/g; une différence de volume (Vs) entre le volume microporeux (Vmic) ) et le volume de mésopores (Vmet) d'au moins 0,45; et une quantité d'oxyde de surface d'au moins 0,10 meq/g
Bibliography:Application Number: CA20203148503