Patent classifications
B01J20/183
EMM-26, a novel synthetic crystalline material, its preparation, and its use
EMM-26 is a novel synthetic crystalline material having a single crystalline phase with a unique T-atom connectivity and X-ray diffraction pattern which identify it as a novel material. EMM-26 has a two-dimensional pore system defined by 10-membered rings of tetrahedrally coordinated atoms having pore dimensions of 6.3 3.2 . EMM-26 may be prepared with a organic structure directing agent, such as 1,6-bis(N-methylpyrrolidinium) hexane dications and/or 1,6-bis(N-methylpiperidinium) hexane dications. EMM-26 may be used in organic compound conversion and/or sorptive processes.
Molding for a hydrophobic zeolitic material and process for its production
The present invention relates to A process for the production of a molding, comprising (I) providing a zeolitic material; (II) mixing the zeolitic material provided in step (I) with one or more binders; (III) kneading of the mixture obtained in step (II); (IV) molding of the kneaded mixture obtained in step (III) to obtain one or more moldings; (V) drying of the one or more moldings obtained in step (IV); and (VI) calcining of the dried molding obtained in step (V); wherein the zeolitic material provided in step (I) displays a water adsorption ranging from 1 to 15 wt.-% when exposed to a relative humidity of 85%, as well as to a molding obtainable or obtained according to the inventive process in addition to a molding per se and to their respective use.
Filtration material for filtered venting, and filtered venting device
Provided are a filtration material for filtered venting and a filtered venting device that are more effective in adsorbing radioactive iodine than in the conventional art and are useful for addressing severe accidents. The filtration material for filtered venting comprises granulated zeolite L, wherein at least a portion of the ion exchange sites of the zeolite L are substituted with silver. Of the ion exchange sites, a constitution ratio (a/b) of ion exchange sites (a) substituted with silver to ion exchange sites (b) not substituted with silver is 25/75-55/45. The zeolite L has a silver content of 7-12 wt % on a dry weight basis.
Method for separating xylenes in a simulated moving bed by means of a zeolitic adsorbent solid having a particle size of between 150 and 500 microns
Process for separating xylenes starting from a feed comprising cuts of isomers of aromatic hydrocarbons containing 8 carbon atoms, in a simulated moving bed, by selective adsorption of a xylene isomer in the presence of a desorbent, by means of particles of agglomerated zeolitic adsorbent based on zeolite crystals with a number-average diameter less than or equal to 1.2 m, wherein the number-average diameter of said particles of adsorbent is between 150 m and 500 m and the mechanical strength measured by the Shell method series SMS1471-74 adapted for agglomerates with a size below 500 m is greater than or equal to 2 MPa.
SORBENT STRUCTURES WITH RESISTIVE HEATING CAPABILITY AND METHODS OF MAKING THE SAME
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.
EMM-37 MATERIALS AND PROCESSES AND USES THEREOF
The disclosure is related to EMM-37 materials, processes of making, and uses of the same as well as structure directing agents useful for the preparation of the EMM-37 materials, processes and intermediates for making such structure directing agents.
Molecular sieve, sound absorbing material using the same, and speaker
The present disclosure provides a molecular sieve, a sound absorbing material using the molecular sieve, and a speaker. The molecular sieve is a core-shell molecular sieve. The core-shell molecular sieve includes a core phase molecular sieve and a shell layer molecular sieve. The shell layer molecular sieve has a greater average pore diameter than the core phase molecular sieve. The porous shell layer molecular sieve having the greater pore diameter can protect the internal functioning micropores from being blocked, so that a resonant frequency f.sub.0 of a same volume of molecular sieve can be reduced, the bass effect and performance stability are significantly improved.
METHOD FOR LITHIUM ADSORPTION IN CARBONATE- AND/OR SULFATE-CONTAINING SOLUTION
A method for lithium adsorption in a carbonate- and/or sulfate-containing solution, comprising using an aluminum-based lithium adsorbent for adsorption of lithium ions in the carbonate- and/or sulfate-containing solution, after the adsorption is saturated, using a weakly acidic high-concentration salt solution to transform the adsorbent, desorbing the transformed adsorbent by means of a low-concentration salt solution or water, and entering the next cycle for operation.
Zeolite nanocrystal aggregates
The present invention relates to a zeolite material in the form of FAU zeolite nanocrystal aggregates, to the method for preparing said material, to the zeolite agglomerates prepared from said material with a binder, and to the uses of said material and agglomerate as adsorbents for gas-phase or liquid-phase separation operations, and particularly in methods for separating gas or liquid flows.
13X ZEOLITE, SYNTHESIS METHOD AND USE THEREOF
The present disclosure relates to a 13X zeolite, a 13X zeolite adsorbent and a synthesis method thereof. Wherein, the synthesis method includes preparing a seed material by mixing sodium aluminate, sodium silicate, NaOH into water to get a seed mixture, stirring the seed mixture and aging. Then preparing the 13X zeolite by mixing sodium aluminate, sodium silicate, NaOH into water, followed by 0-5 wt. % addition of the seed material to obtain a gel mixture. Stirring the said gel mixture for 1 hour and crystallization of the gel mixture, then a filtration step and a washing step is performed to obtain a 13X zeolite cake. Further, the 13X zeolite cake is dried at 120? C. for 24 hours, then crushed and grinded to obtain a 13X zeolite powder. The 13X zeolite adsorbent is prepared by binding the 13X zeolite powder with a binder.