The present invention relates to a mass for trapping silicon compounds, comprising a porous alumina-based support and at least one metal chosen from the metals from groups VIB and VIIIB, and exhibiting a grain density of at least 1.20 g/ml, a specific surface of at least 300 m.sup.2/g and pores with a mean size of less than 6.5 nm, as determined by mercury porosimetry. The present invention also relates to a process for the preparation of said trapping mass and to a trapping process using said trapping mass.

The disclosure provides for MOF heterolites comprised of ordered superlattices of MOFs, the manufacture thereof, and the use of the MOF heterolites for various applications, such as gas separation and/or storage, catalysis, light harvesting, and meta-materials.

The present disclosure relates to a molecular sieve, preparation thereof and acoustic absorption material and speaker containing the same. The molecular sieve having an MFI-structure, comprising a framework and an off-framework cation, wherein the framework comprises SiO.sub.2 and a metal oxide M.sub.xO.sub.y with M comprising boron, gallium or aluminium; the off-framework cation is at least one of hydrogen ion, alkali metal ion and alkaline earth metal ion. The molecular herein can effectively prevent the failure of the molecular sieve and improve the performance stability of the speaker.

The invention relates to an adsorbent comprising a zeolite-based phase and a non-zeolite-based phase, said adsorbent having: an outer surface area of less than or equal to 30 m.sup.2.Math.g.sup.1, preferably less than or equal to 20 m.sup.2.Math.g.sup.1, a zeolite-based phase comprising at least one zeolite of FAU structure of X type, and a pore diameter distribution, determined by mercury intrusion according to standard ASTM D 4284-83 and expressed by the volume distribution dV/dlogDHg, in which DHg is the apparent pore diameter and V is the pore volume, the mode of which is between 100 nm and 250 nm, limits inclusive. The invention also relates to a process for preparing the said adsorbent and to the uses thereof, especially for separating xylene isomers.

The present invention relates to a stabilized inorganic oxide support for capturing carbon dioxide from gases having high regeneration capacities over many cycles. The method for preparing the stabilized inorganic oxide support includes stabilizing an alumina-containing precursor by either calcining or steaming, impregnating an alkali or alkaline earth compound into the stabilized alumina-and drying the alkali or alkaline earth compound-impregnated stabilized alumina. The stabilized inorganic oxide support can be regenerated at lower temperatures between 100 and 150 C. The carbon dioxide adsorption capacity of the regenerated support is between 70 and 90% of the theoretical carbon dioxide adsorption capacity.

A process to prepare a carbon molecular sieve adsorbent composition comprises steps beginning with an activated carbon having specific effective micropore size. The activated carbon is impregnated with monomers or partially polymerized polymer, allowed to complete polymerization, and then carbonized such that the impregnant shrinks the micropores to another specific effective micropore size. Finally, the impregnated/polymerized/carbonized product is annealed at a temperature ranging from 1000? C. to 1500? C., which ultimately and predictably shrinks the micropores to a size ranging from 4.0 Angstroms to 4.3 Angstroms. The invention surprisingly enables fine tuning of the effective micropore size, as well as desirable selectivity, capacity and adsorption rates, to obtain highly desirable carbon molecular sieving capability particularly suited for use in, for example, fixed beds in pressure swing or temperature swing processes to enable propylene/propane separations.

An amino compound-supported porous substrate includes: a porous substrate including at least macropores; and an amino compound supported in at least some pores of porous substrate. Porous substrate has a total pore volume per unit volume of the porous substrate of 0.55 mL/mL or more and 0.95 mL/mL or less, as determined by mercury porosimetry. Porous substrate preferably has a skeleton containing an element selected from the group consisting of silicon, aluminum, tin, cerium, titanium, and zirconium.

The disclosure provides for MOF heterolites comprised of ordered superlattices of MOFs, the manufacture thereof, and the use of the MOF heterolites for various applications, such as gas separation and/or storage, catalysis, light harvesting, and meta-materials.

The present invention relates to a stabilized inorganic oxide support for capturing carbon dioxide from gases having high regeneration capacities over many cycles. The method for preparing the stabilized inorganic oxide support includes stabilizing an alumina-containing precursor by either calcining or steaming, impregnating an alkali or alkaline earth compound into the stabilized alumina-and drying the alkali or alkaline earth compound-impregnated stabilized alumina-. The stabilized inorganic oxide support can be regenerated at lower temperatures between 100 and 150 C. The carbon dioxide adsorption capacity of the regenerated support is between 70 and 90% of the theoretical carbon dioxide adsorption capacity.

The present disclosure provides materials and methods related to the purification of a biologic. The present disclosure provides materials and methods related to the purification of a biologic. In particular, the present disclosure provides a multifunctional chromatography medium comprising porous beads or particles having a defined pore diameter distribution and one or more ligands conjugated to the surface of the pores capable of removing process-related impurities and product-related impurities from a target biologic.