The present invention provides a bionic fiber adsorptive material with multi-adsorption sites and a preparation method and use thereof, and the material is rich in multi-adsorption sites (N, O and S). The material is obtained by blending three polyethyleneimine polymers modified by multifunctional groups respectively with a carboxylated nanocellulose and graphene oxide, then adopting a coaxial spinning method based on a principle of imitating spider spinning, and then adopting a post-crosslinking technology. The material has a multilayer structure with the nanocellulose as a skeleton, the graphene oxide as an outer layer, and the three polyethyleneimine polymers modified by the multifunctional groups respectively as an inner layer, and a connection among the layers is a chemical bond connection. Densities of N, O and S adsorption sites of the material according to the present invention are all higher than 5 mmol/g.

An adsorbent and a granulated substance for which reduction in adsorption performance in low humidity environments is suppressed are provided. The adsorbent includes: a porous body mainly composed of silicon dioxide, including a plurality of fine pores, and having a specific surface area of not less than 1 m.sup.2/g and not more than 10 m.sup.2/g; one of an acid and a base with which inside of the fine pores of the porous body is impregnated to neutralize a target gas to generate a salt; and a hydrophilic fiber held in the porous body.

A sorbent product, including from about 1 wt % to about 99 wt %, based on the total weight of the sorbent product, of at least one base sorbent material; and from about 1 wt % to about 99 wt %, based on the total weight of the sorbent product, of at least one binder. The sorbent product may further include at least from about 0 wt % to about 99% wt %, based on the total weight of the sorbent product, of at least one additional additive. Methods for making same and methods and systems for controlling multiple pollutants are also included.

The present disclosure provides a purification material for a rare earth metal or rare earth alloy and a preparation method thereof and a purification method for a rare earth metal or rare earth alloy. The purification material includes the following raw materials in mass percentage: 30% to 45% of a tungsten powder, 30% to 50% of a rare earth oxide, 5% to 10% of zirconia, 10% to 15% of a binder, and 1% to 5% of a rare earth hydride.

The present disclosure provides for a porous gas sorbent monolith with superior gravimetric working capacity and volumetric capacity, a gas storage system including a porous gas sorbent monolith of the present disclosure, methods of making the same, and method for storing a gas. The porous gas sorbent monolith includes a gas adsorbing material and a non-aqueous binder.

The present invention relates to an activated carbon, having a BET specific surface area (A) of 1,250 to 1,800 m.sup.2/g as determined from a carbon dioxide adsorption isotherm, and a ratio (B)/(C) of 0.640 or lower between a pore volume (B) mL/g at a pore diameter of 0.4 to 0.7 nm and a pore volume (C) mL/g at a pore diameter of 0.7 to 1.1 nm as determined by performing a grand canonical Monte Carlo simulation on a carbon dioxide adsorption-desorption isotherm.

This invention relates to a method for preparing superabsorbent polymer. More specifically, this invention relates to a method for preparing superabsorbent polymer that realizes excellent drying efficiency, and thus, effectively inhibits warping of resin.

The present disclosure relates to hydrocarbon emission control systems. More specifically, the present disclosure relates to substrates coated with hydrocarbon adsorptive coating compositions and evaporative emission control systems for controlling evaporative emissions of hydrocarbons from motor vehicle engines and fuel systems.

Described is a filter-drier core for removing acids and halides that are generated by decomposition of a refrigerant that contains a fluoroiodocarbon, the filter drier core comprising a molded core that includes gamma phase activated alumina and a molecular sieve. The molecular sieve has a pore size between 3-4 angstroms and between 300-00 m.sup.2/g surface area, and/or the alumina is provided in a beaded form with average bead diameter between 0.1-10 mm. An alumina surface area may be between 140-250 m.sup.2/g, and an average pore size may be 6 nm to 16 nm. A percent molecular sieve in the core may be between 0-40%, with the rest of the core being alumina. To increase surface area of the core, the filter-drier core may define a plurality of suitably shaped channels that extend longitudinally through the core, may have fins that extend from a central body, or may be configured as a plurality of rods. A refrigerant system includes a refrigerant circuit through which a refrigerant flows, and a filter-drier unit including the filter-drier core configured for contact with the refrigerant for removing contaminants from the refrigeration system.

The present invention relates to a method for preparing superabsorbent polymer. The method for preparing superabsorbent polymer according to the present invention enables providing superabsorbent polymer having excellent absorption ratio, absorption speed and permeability.