A water absorption treatment material absorbs a liquid containing a malodorous substance, and includes a first grain and a second grain. The first grain contains a metal having a deodorizing function. The second grain does not contain a metal having a deodorizing function.

A composition that absorbs oxygen and emits carbon dioxide in response to absorbing oxygen including ascorbic acid, an organic acid, a catalyst that promotes oxidation of the organic acid and emission of carbon dioxide and a soluble transition metal salt characterized by multiple oxidation states.

The present application relates to activated carbon compositions for removing viral, bacterial, or other infectious particles from air. The activated carbon was found to be effective at filtering aerosolized bacteriophage particulates and could be applied to barrier materials which prevents viral particulates from passing through, for example in home filters or masks or other coverings to prevent the spread of infectious diseases.

A structure in which a plurality of particles each containing a hydrogen absorption metal element are arranged in a fixed member such that the plurality of particles are apart from each other. An entire surface of each of the plurality of particles is surrounded by the fixed member. The fixed member contains at least one of an oxide and a nitride.

An article for removing undesired chemical ions or compounds from gas and fluid streams where the article is a porous polymeric matrix with a sorption particle, the sorption particle is capable of removing the undesired chemical ion or compound.

An atmospheric water harvesting material includes a deliquescent salt, a photothermal agent, and a polymeric hydrogel matrix containing the deliquescent salt and photothermal agent.

The invention relates to absorbent compositions comprising soybean hulls and soybean hull biochar, methods of preparing such absorbent compositions, and methods of using such compositions in the preparation of articles of manufacture.

Methods of sulfurizing metal containing particles in the absence of hydrogen are described. One method includes contacting a bed of metal containing particles with a gaseous stream comprising hydrogen sulfide and inert gas under reaction conditions sufficient to produce sulfided metal containing particles. The gaseous stream is introduced into a vertical reactor at an inlet positioned at the bottom portion of the reactor and any unreacted hydrogen sulfide and inert gas is removed at an outlet positioned above the inlet. The sulfided metal containing particles can be removed from the reactor and stored.

The present invention relates to a process of synthesis of silica-based adsorbents used in the CO.sub.2 capture process in oil fields with expressive volumes of associated CO.sub.2, aiming its subsequent use in processes of producing bioQAV and alcohol from the hydrogenation reaction. Adsorbents obtained based on silica and different metals have a high stability and activity in CO.sub.2 capture, at adsorption and desorption temperatures of 25° C., increasing the density of the silanol groups present in mesoporous silica, conducted by replacing Si in the crystal lattice with various metals. The insertion of elements in the structure is responsible for creating vacancies used to capture CO.sub.2, being characteristic of higher enthalpies involved in the process. Additionally, the exchange of silicon for metals is conducted during the hydrolysis process of the silica precursor, not requiring another step, in addition to being able to be conducted with low-cost precursors, such as chlorides, nitrates and isopropoxides, and an aqueous medium.

Processes, compositions, and sensors for sensing a variety of toxic chemicals based on colorimetric changes. Exemplary process for sensing a toxic chemical includes contacting a toxic chemical, or byproduct thereof, with a sorbent that includes a porous metal hydroxide or a porous mixed-metal oxide/hydroxide and a transition metal reactant suitable to react with a toxic chemical or byproduct thereof. The sorbent is contacted with the toxic chemical or byproduct thereof for a sampling time. A difference between a post-exposure colorimetric state of the sorbent and a pre-exposure colorimetric state of the sorbent is determined to thereby detect exposure to, or the presence of, the toxic chemical or byproduct thereof.