Activated alumina

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

Anionically activated alumina in the carboxyalkylation of benzyl halides

Abstract: Alcoxycarbonylation de l'α-bromotoluene, par reaction avec CO et le methanol en presence d'alumine modifiee par des alcoolates et de l'anion du tetracarbonylcobalt. Synthese de benzeneacetate de methyle

Chemical process for preparing di-ortho benzyl phenols

Abstract: Phenols having an unsubstituted ortho-position are benzylated by reaction with a benzyl alcohol in contact with an activated alumina catalyst especially gamma alumina at a temperature sufficient to maintain the reactants in the vapor phase

Modified activated carbon catalyst and its preparation method

Abstract: A modified activated carbon catalyst is characterized by being prepared from the following raw materials: by weight, 100-120 parts of activated carbon, 5-6 parts of titanium sulfate, 2-3 parts of nano titanium dioxide, 10-12 parts of ammonium hydrogen carbonate, 35-39 parts of zeolite, 20-24 parts of diatomite, 10-12 parts of activated alumina, 8-10 parts of modified attapulgite and a proper amount of water. The modified activated carbon catalyst uses the titanium sulfate, the nano titanium dioxide and the activated alumina for effective catalytic sterilization, and can remove organic pesticides, formaldehyde and other pollutants, and the modified activated carbon catalyst processed by spray drying has an increased adsorption capacity, better purification effect and longer effect time, and is suitable for furniture and air purification, microwave disinfection and the like.

Activated alumina preparation and characterization: The review on recent advancement

Abstract: Aluminum and aluminum based material are significant industrial materials synthesis because of their abandonment, low weight and high-quality corrosion resistance. The most advances in aluminum processing are the ability to synthesize it’s under suitable chemical composition and conditions, a porous structure can be formed on the surface. Activated alumina particles (AAP) synthesized by the electrochemically process from aluminum have gained serious attention, inexpensive material that can be employed for water filtration due to its active surface. Thus, the paper present a review study based on recent progress and advances in synthesizing activated alumina, various techniques currently being used in preparing activated alumina and its characteristics are studied and summarized

Production of ion exchange membrane

Abstract: 1,142,586. Sintered ion conducting membranes. DOUGLAS AIRCRAFT CO. Inc. 11 Feb., 1966 [26 May, 1965], No. 6223/66. Heading C1J. An ion conducting membrane is formed by sintering a mixture of (1) a water-insoluble hydrous metal oxide plus an inorganic acid or a water-insoluble acid salt, and (2) a material retaining a sufficient amount of water and providing a water v.p. of 10-200 mm. at 100‹ C. when the membrane is incorporated in a fuel cell, treating the sinter with an inorganic acid and re-sintering. Specified are: Materials-alumino silicates, activated alumina, Al 2 (Se 4 ) 3 , H 2 SiO 3 , SiO 2 (gel or colloidal), P 2 O 5 , Cu(So 4 ) 3 , CaCl 2 and NH 4 acid phosphate; Acids-boric, phosphoric, molybdic, phosphomolybdic, tungstic and sulphuric; Oxides- Zr, Ti, Sb, W, Si, Sc, Bi, V, Mo, Cr and Al; Salts-Zr phosphate, and sulphate, Ti phosphate and molybdate, Sn phosphate and Th phosphate. The terms " hydrous metal oxide " and " acid salt " are defined.