M(SiF.sub.6)(pyz).sub.3 (M=Cu, Zn, Co, or Ni) has a pore size between a size of H.sub.2 and a size of CO.sub.2, and thus exhibits prominent screening performance for H.sub.2/CO.sub.2. A strong interaction between Cu(SiF.sub.6)(bpy).sub.2 and a CO.sub.2 molecule can hinder the transport of the CO.sub.2 molecule. The above two MOFs both can achieve the H.sub.2/CO.sub.2 separation. By preparing a dense MSiF.sub.6/polymer layer, MSiF.sub.6 is uniformly dispersed in the polymer and is fixed, and subsequently, MSiF.sub.6 is converted into M(SiF.sub.6)(pyz).sub.3 or Cu(SiF.sub.6)(bpy).sub.2 by interacting with an organic ligand. Through vapor-induced in-situ conversion, MOF particles can be well dispersed without interface defects between the MOF particles and the polymer. Even at a doping amount of 80%, the mechanical flexibility and stability of the MMM can still be retained.

An adsorbent includes a porous substrate and a carboxylic acid dimer loaded onto the porous substrate. The carboxylic acid dimer is loaded on the surface or in the plurality of holes of the porous substrate. The average pore size of the porous substrate is not smaller than 2 nm. The carboxylic acid dimer is loaded onto the porous substrate by at least one of the following manners: a) the carboxylic acid dimer is loaded onto the porous substrate through a Si—OH bond; b) the carboxylic acid dimer is loaded onto the porous substrate through the exchange between a carboxyl group and chlorine; c) the carboxylic acid dimer is loaded onto the porous substrate through the exchange between a carboxyl group and a hydroxyl group; and d) the carboxylic acid dimer is loaded onto the porous substrate through the coordination of a carboxyl group and aluminum or silicon.

A porous calcium silicate hydrate, a preparation method thereof and an adsorbent are provided. The preparation method of the porous calcium silicate hydrate includes: leaching fly ash with an alkali agent to obtain a silicate leaching solution; adding the silicate leaching solution dropwise to a calcium hydroxide suspension at a constant rate, and conducting stirring and a heating reaction to obtain a calcium silicate hydrate gel; and mixing the calcium silicate hydrate gel with an organic alcohol solvent, conducting azeotropic distillation, and then conducting separation, drying and calcination to obtain the porous calcium silicate hydrate.

A porous calcium silicate hydrate, a preparation method thereof and an adsorbent are provided. The preparation method of the porous calcium silicate hydrate includes: leaching fly ash with an alkali agent to obtain a silicate leaching solution; adding the silicate leaching solution dropwise to a calcium hydroxide suspension at a constant rate, and conducting stirring and a heating reaction to obtain a calcium silicate hydrate gel; and mixing the calcium silicate hydrate gel with an organic alcohol solvent, conducting azeotropic distillation, and then conducting separation, drying and calcination to obtain the porous calcium silicate hydrate.

A sorbent structure that includes a continuous body in the form of a flow-through substrate comprised of at least one cell defined by at least one porous wall. The continuous body comprises a sorbent material carbon substantially dispersed within the body. Further, the temperature of the sorbent structure can be controlled by conduction of an electrical current through the body.

Adsorbent materials are disclosed, along with filter elements containing the adsorbent materials methods of using adsorbents to remove siloxane contaminants from a gas stream. The method includes providing an adsorbent material that has been washed with an acid and passing a gas through the adsorbent material so as to reduce siloxane levels in the gas. A filter element for reducing siloxane levels in a gas includes a first adsorbent material, the first adsorbent material comprising an acid-washed adsorbent; and a second adsorbent material, the second adsorbent material comprising an acid-impregnated adsorbent.

Adsorbent materials are disclosed, along with filter elements containing the adsorbent materials methods of using adsorbents to remove siloxane contaminants from a gas stream. The method includes providing an adsorbent material that has been washed with an acid and passing a gas through the adsorbent material so as to reduce siloxane levels in the gas. A filter element for reducing siloxane levels in a gas includes a first adsorbent material, the first adsorbent material comprising an acid-washed adsorbent; and a second adsorbent material, the second adsorbent material comprising an acid-impregnated adsorbent.

Adsorbents including a sorbent, at least one metal additive and greater than about 5 wt. % triethylenediamine are described herein. Methods for making such adsorbents and filters comprising the adsorbents are also described.

Adsorbents including a sorbent, at least one metal additive and greater than about 5 wt. % triethylenediamine are described herein. Methods for making such adsorbents and filters comprising the adsorbents are also described.

A sorbent pellet comprising a sorbent material. The sorbent pellet is suitable for use in a sorbent rotor device, for example to capture water or water vapour from a gaseous or liquid composition comprising water or water vapour. The sorbent material has a unit cell density of at least 0.8 g/cm3 and may therefore be considered to be a high density sorbent material. A plurality of sorbent pellets may provide a high capacity media for a sorbent rotor device, which may be particularly effective in dehumidification, desalination or water purification processes. Also disclosed are a cartridge for a sorbent rotor device, a sorbent rotor device for capturing water from a liquid or gaseous composition comprising water, a method of capturing water from a composition comprising water and/or water vapour, and a use of a sorbent material having a density of at least 0.8 g/cm3 in pellet form to capture water from air.