Activated alumina

About: Activated alumina is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 31090 citations.

Process for preparing organic carbonate solvents used for secondary lithium battery

Abstract: A kind of organic carbonate solvents for secondary Li battery is prepared through flowing organic carbonate through a drying column containing drying agent which may be one or more of metal Li, metalNa, calcium sulfate, calcium chloride, potassium carbonate, activated alumina, molecular sieve and activated carbon for dewatering it, distilling in distillation tower at 50-200 deg.C and -0.05--0.1 MPa, and separating distillate. Its advantages are high purity up to 99.9 % or more and low water content (lower than 5ppm).

Activated alumina compact for production of hydrogen peroxide, its production, and purification of operating liquid for production of hydrogen peroxide by using the same

Abstract: PROBLEM TO BE SOLVED: To obtain an activated alumina compact for production of hydrogen peroxide having the same or more initial removing ability for removing an epoxide from an operating liquid, and a longer life for sufficient removal compared to the conventional one, and further to provide a production method thereof, and a method for purifying the operating liquid for the production of the hydrogen peroxide by using the same. SOLUTION: This activated alumina compact for production of hydrogen peroxide has >=0.5 mm and =250 m2/g BET specific surface area, and 0.01-15 wt.% SiO2 concentration. The alumina compact is usable for removing an epoxide from a solution containing an anthraquinone compound in the process of producing the hydrogen peroxide by the oxidation and reduction of the anthraquinone compound. The method for producing the activated alumina compact for the production of the hydrogen peroxide comprises compacting activated alumina powder having rehydration, and 0.5-1.2 g/cm3 bulk density, rehydrating the obtained compact, and baking the rehydrated compact.

A method of manufacturing a structured adsorbent bed for capture of co2 from low pressure and low concentration sources

Abstract: A method of forming a structured adsorbent sheet is provided. The method includes, combining a nano-adsorbent powder and a binder material to form an adsorbent material, and sandwiching a porous electrical heating substrate between two layers of adsorbent material. The nano-adsorbent powder may be a nano-particle adsorbent. The nano-adsorbent powder may be selected from the group consisting of crystal zeolite, activated carbon, activated alumina, silica gel, and metal organic framework (MOF).

Dielectric properties of water/alumina

Abstract: The real and imaginary components of the dielectric constant of activated alumina powder containing various quantities of water have been measured at temperatures from 0-29.8° C, and at frequencies from 40 c/s to 100 Mc/s. The loss observed in this frequency range is ascribed to a Wagner-type mechanism. No discontinuity in the dielectric properties of the medium was observed.

Heavy metal-resistant matrix-type cracking catalyst and its preparing process

Abstract: A heavy metal-resistant cracking catalyst (FCC) with novel matrix for cracking the heavy oil with high content of Ni or V contains clay (20-80 m%), binder (5-40m%), metal capture (such as rare-earth oxalate) (1-25m%), other oxides (such as activated alumina) (0-30m%), and faujasite or ZSM-5 zeolite or beta-zeolite or their mixture (5-40m%). It has excellent heavy metal resistance.