The invention relates to modified zeolite crystals comprising zeolite crystals and from 0.5% to 20%, by weight, endpoints included, relative to the total weight of modified zeolite crystals, of at least one polymeric compatibilizer, more particularly a functional polyolefin.

The invention also relates to the use of the modified zeolite crystals according to the invention as a filler in a polymer matrix, for example for the preparation of composite materials.

The invention relates to modified zeolite crystals comprising zeolite crystals and from 0.5% to 20%, by weight, endpoints included, relative to the total weight of modified zeolite crystals, of at least one polymeric compatibilizer, more particularly a functional polyolefin.

The invention also relates to the use of the modified zeolite crystals according to the invention as a filler in a polymer matrix, for example for the preparation of composite materials.

Provided is a method for regenerating a liquid to be treated, the method includes bringing a lactic acid adsorbent that contains a Mg—Al-based layered double hydroxide having Mg.sup.2+ and Al.sup.3+ as constituent metals, and an ammonia adsorbent having L-type zeolite, into contact with the liquid to be treated that contains lactic acid and ammonia, to remove lactic acid and ammonia in the liquid to be treated.

Provided is a method for regenerating a liquid to be treated, the method includes bringing a lactic acid adsorbent that contains a Mg—Al-based layered double hydroxide having Mg.sup.2+ and Al.sup.3+ as constituent metals, and an ammonia adsorbent having L-type zeolite, into contact with the liquid to be treated that contains lactic acid and ammonia, to remove lactic acid and ammonia in the liquid to be treated.

The present disclosure relates to systems and methods of making ammonia using stable ammonia absorbents. The system and method for producing ammonia, comprises a reactor comprising a catalyst that converts at least a portion of nitrogen feed gas and at least a portion of hydrogen feed gas to ammonia (NH3) forming a reaction mixture comprising the ammonia, unreacted nitrogen, and unreacted hydrogen. An absorber configured to selectively absorb ammonia from the reaction mixture at a temperature of about 180 deg. C. to 330 deg. C. and a pressure of about 1-20 bar, the absorber comprising a solid absorbent. Preferably the solid absorbent is at least one metal halide and a solid support. The unabsorbed ammonium, the unreacted nitrogen, and unreacted hydrogen gas are recycled to the reactor.

The present disclosure relates to systems and methods of making ammonia using stable ammonia absorbents. The system and method for producing ammonia, comprises a reactor comprising a catalyst that converts at least a portion of nitrogen feed gas and at least a portion of hydrogen feed gas to ammonia (NH3) forming a reaction mixture comprising the ammonia, unreacted nitrogen, and unreacted hydrogen. An absorber configured to selectively absorb ammonia from the reaction mixture at a temperature of about 180 deg. C. to 330 deg. C. and a pressure of about 1-20 bar, the absorber comprising a solid absorbent. Preferably the solid absorbent is at least one metal halide and a solid support. The unabsorbed ammonium, the unreacted nitrogen, and unreacted hydrogen gas are recycled to the reactor.

A process of removing methanol, CO.sub.2, or both from a hydrocarbon stream is described. The process uses an adsorbent comprising binderless type 3A zeolite. The adsorbent has high methanol removal capacity and low olefin co-adsorption capacity, as well as low reactivity in an olefin stream. This allows reduced adsorbent loading while maintaining downstream catalyst performance and product quality. The adsorbent comprises a type 3A zeolite comprising less than 5% of a binder and an ion exchange ratio of 30% to 70%. The adsorption process can obtain an outlet methanol content of 1 ppmw or less.

The hemodialysis system with dialysate recycling uses a urea-adsorbing zeolite to remove urea from used dialysate, thus allowing the dialysate to be recycled. The hemodialysis system includes a housing and a dialyzer mounted on the housing. Similar to a conventional hemodialysis dialyzer, the dialyzer has blood inlet and blood outlet ports and dialysate inlet and dialysate outlet ports. The blood inlet port is adapted for receiving blood from the patient to be cleaned, and the blood outlet port is adapted for outputting cleaned blood, which is returned to the patient. A dialysate container may be mounted on the exterior of the housing and is adapted for receiving dialysate and the urea-adsorbing zeolite. Clean dialysate is fed from the dialysate container to the dialysate inlet port of the dialyzer, and used dialysate is recirculated from the dialysate outlet port of the dialyzer through the dialysate container.

The hemodialysis system with dialysate recycling uses a urea-adsorbing zeolite to remove urea from used dialysate, thus allowing the dialysate to be recycled. The hemodialysis system includes a housing and a dialyzer mounted on the housing. Similar to a conventional hemodialysis dialyzer, the dialyzer has blood inlet and blood outlet ports and dialysate inlet and dialysate outlet ports. The blood inlet port is adapted for receiving blood from the patient to be cleaned, and the blood outlet port is adapted for outputting cleaned blood, which is returned to the patient. A dialysate container may be mounted on the exterior of the housing and is adapted for receiving dialysate and the urea-adsorbing zeolite. Clean dialysate is fed from the dialysate container to the dialysate inlet port of the dialyzer, and used dialysate is recirculated from the dialysate outlet port of the dialyzer through the dialysate container.

The use of a palladium-doped zeolite for the adsorption of volatile organic compounds is described wherein the zeolite has a CHA framework type and is polymer-bound. Such zeolites have been found to have particular utility as packaging materials for the adsorption of volatile organic compounds, such as those originating from organic matter.