HIGH-PERFORMANCE ADSORBENTS BASED ON ACTIVATED CARBON HAVING HIGH MESO- AND MACROPOSOSITY
First Claim
1. High-performance adsorbents based on activated carbon in the form of discrete grains of activated carbon, preferably in spherical form,characterized in thatat least 55% of the total pore volume of the high-performance adsorbents are formed by pores having pore diameters of more than 20 Å
- ,the high-performance adsorbents have a measure of central tendency pore diameter of more than 25 Å
, andthe high-performance adsorbents have a BET surface area of at least 1250 m2/g.
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Abstract
The invention concerns high-performance adsorbents based on activated carbon of high meso- and macroporosity which are present in the form of discrete grains of activated carbon, wherein
- at least 55% of the total pore volume of the high-performance adsorbents are formed by pores (i.e. meso- and macropores) having pore diameters of more than 20 Å,
- the high-performance adsorbents have a measure of central tendency pore diameter of more than 25 Å, and
- the high-performance adsorbents have a BET surface area of at least 1250 m2/g.
These high-performance adsorbents are obtainable by a novel process comprising specific two-stage activation, and have, in addition to the aforementioned properties, an excellent abrasion and bursting resistance, so that they are useful for a multiplicity of different applications.
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Citations
39 Claims
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1. High-performance adsorbents based on activated carbon in the form of discrete grains of activated carbon, preferably in spherical form,
characterized in that at least 55% of the total pore volume of the high-performance adsorbents are formed by pores having pore diameters of more than 20 Å - ,
the high-performance adsorbents have a measure of central tendency pore diameter of more than 25 Å
, andthe high-performance adsorbents have a BET surface area of at least 1250 m2/g. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification