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Activated alumina

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


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01 Jan 1990
TL;DR: In this paper, the authors present a survey of the state of the art in the use of aluminina in various applications, such as paper, dentrifices, paints, coatings, Rubbers, and more.
Abstract: Introduction. History of Alumina Chemicals (L.D. Hart). World Production and Economics of Alumina Chemicals (L.H. Baumgardner). Fundamental Properties of Alumina Chemicals. Nomenclature, Preparation, and Properties of Aluminum Oxides, Oxide Hydroxides, and Trihydroxides (K. Wefers). Mechanical Properties of Alumina (R.C. Bradt and W.D. Scott). Colloidal Properties of Alumina (A. Bleier). Phase Equilibria of Alumina (L.P. Cook). Current Commercial Production Processes, Products, and Applications. Production Processes, Properties, and Applications for Aluminum-Containing Hydroxides (L.L. Musselman). Production Processes, Properties, and Applications for Activated and Catalytic Aluminas (K.P. Goodboy and J.C. Downing). Production Processes, Properties, and Applications for Calcined and High-Purity Aluminas (T.J. Carbone). Production Processes, Properties, and Applications for Tabular Alumina Refractory Aggregates (G. MacZura). Production Processes, Properties, and Applications for Calcium Aluminate Cements (J.E. Kopanda and G. MacZura). Gallium (A. Pearson and C.N. Cochran) Analytical Procedures for Alumina Chemicals -Editor's Note. State of the Art Assessments in Applications Utilizing Alumina Chemicals. Alumina Chemicals as Additives for Paper, Dentrifices, Paints, Coatings, Rubbers, and Plastics with Emphasis on Fire-Retardant Products (L.L. Musselman). Activated Alumina Desiccants (R.D. Woosley). Selective Adsorption Processes (H.L. Fleming and K.P. Goodboy). Water-Treatment Products and Processes (H.L. Fleming). Claus Catalysts and Alumina Catalyst Materials and Their Application (J.C. Downing and K.P. Goodboy). Monolithic Catalyst Systems (I.M. Lachman). Pelleted Catalyst Systems (W.S. Briggs). Electrical Properties of Alumina Ceramics (R.H. Insley). Electronic Ceramics (B. Schwartz). Alumina Usage in Electric Power Generation and Storage (W.T. Bakker). Alumina in Electrical Porcelain (R.H. Lester). Dinnerware Manufacture and Use in the United States (R.J. Beals). Advanced Ceramics Involving Alumina (J.B. Wachtman Jr. and R.A. Haber). Alumina as a Biomedical Material (J.W. Boretos). Alumina in Coatings (L.A. Ketron). Alumina as a Composite Material (G. Fisher). Alumina in Glasses and Glass-Ceramics (J.F. MacDowell). Alumina Powder Production by Aerosol Processes (T.T. Kodas and A. Sood). Refractory Ceramic Fiber (R.D. Smith). Fused Alumina-Pure and Alloyed-as an Abrasive and Refractory Material (P. Cichy). High-Alumina Refractories for Steelmaking in Europe (M. Koltermann). High-Alumina Refractories for Iron- and Steelmaking in Japan (N. Nameishi and T. Matsumura). Use of High-Alumina Refractories in the U.S. Steel Industry (D.H. Hubble). Petroleum and Petrochemical Applications for Refractories (M.S. Crowley and R.E. Fisher). Refractories Used for Aluminum Processing (G.E. Graddy Jr. and D.A. Weirauch Jr.). The Use of Alumina in Refractories for Melting Glass (E.A. Thomas). Refractories Used for Investment Casting of High-Temperature Alloys (M.Guerra Jr.). Alumina in Monolithic Refractories (L.P. Krietz and R.E. Fisher). Space Vehicle Thermal Protection (D.B. Leiser). Industrial Hygiene and Toxicology of Alumina Chemicals. The Aluminas and Health (B.D. Dinman). Long-Range Future Technology-The Role of Alumina Chemicals. The Future of Alumina Chemicals in Europe (P. Rothenbuehler, Y. Lazennec and L.D. Hart). Long Range Future Trends: The Role of Alumina Chemicals-The Japanese Viewpoint (H. Yanagida). The Future Role of Alumina in Ceramics Technology (M.J. Cima and H.K. Bowen). Long-Range Technology-The Role of Alumina Chemicals as Seen from the Japanese Viewpoint (S. Kazama). Present Situation and Future Technology of Alumina Chemicals in Japan (K. Yamada). A View of the Future for Alumina Chemicals (J.P. Starr). Glossary. A Glossary of Terms Most Frequently Used in Alumina Technology (S.C. Carniglia and B.J. Beadle).

138 citations

Journal ArticleDOI
TL;DR: In this article, the adsorption performance of seven representative activated carbon samples and three activated alumina samples was evaluated in a batch adaption system and a fixed-bed flow adsoption system for removing quinoline and indole from a model diesel fuel in the coexistence of sulfur compounds and aromatics.
Abstract: In order to explore the adsorptive denitrogenation of liquid hydrocarbon streams for producing ultraclean fuels, the adsorption performance of seven representative activated carbon samples and three activated alumina samples was evaluated in a batch adsorption system and a fixed-bed flow adsorption system for removing quinoline and indole from a model diesel fuel in the coexistence of sulfur compounds and aromatics. Different adsorbents show quite different selectivity toward basic and nonbasic nitrogen compounds (quinoline and indole) and sulfur compounds (dibenzothiophene and 4,6-dimethyldibenzothiophene). The activated carbons generally show higher capacity than activated alumina samples for removing the nitrogen compounds. The adsorption capacity and selectivity of the activated carbons for nitrogen compounds were further correlated with their textural properties and oxygen content. It was found that (1) the microporous surface area and micropore volume are not a key factor for removal of the nitrogen...

137 citations

Journal ArticleDOI
TL;DR: In this article, a fixed-bed adsorber operated at ambient temperature and pressure was used for diesel fuel desulfurization by different nickel-exchanged faujasite zeolites.
Abstract: Desulfurization of a commercial diesel fuel (2972 ppmw S) by different nickel(II)-exchanged faujasite zeolites was studied in a fixed-bed adsorber operated at ambient temperature and pressure The zeolites were prepared by both liquid-phase (LP) and solid-state (SS) ion-exchange (IE) methods In general, the adsorbents tested for total sulfur adsorption capacity at breakthrough followed the order: Selexsorb CDX (alumina)/Ni(II)-Y (SSIE-500) > Selexsorb CDX (alumina)/Ni(II)-X (LPIE-RT) > Ni(II)-Y (SSIE-500) > Ni(II)-X (LPIE-RT) > Ni(II)-Y (LPIE-135) The best adsorbent, Selexsorb CDX (alumina)/Ni(II)-Y (SSIE-500) [layered bed of 25 wt % activated alumina followed by Ni(II)-Y] is capable of producing 19 cm3 of diesel fuel per gram of adsorbent with a weighted average content of 022 ppmw S These low-sulfur fuels are suitable for fuel cell applications The sorbents were fully regenerated in one step using air at 350 °C, which simplifies possible implementation for many applications GC−FPD results showed

134 citations

Journal ArticleDOI
TL;DR: In this article, a series of batch adsorption experiments were carried out to assess parameters that influence the fluoride removal process and different parameters investigated include the effect of contact time, initial fluoride concentration, adsorbent dose, pH of the solution and coexisting anions.
Abstract: BACKGROUND: The present study has concentrated on investigating the fluoride removal potential of nano-scale aluminum oxide hydroxide (nano-AlOOH). A series of batch adsorption experiments were carried out to assess parameters that influence the adsorption process. The different parameters investigated include the effect of contact time, initial fluoride concentration, adsorbent dose, pH of the solution and co-existing anions. RESULTS: Most of the adsorption took place during the first 30 min and kinetic and equilibrium adsorption data show that the process obeys a pseudo-second-order kinetic equation and the Langmuir adsorption model. The fluoride removal efficiency is greater than 90% between pH 6 and 8 and decreases as pH values increase to 11. The presence of SO42− or PO43− in aqueous solution was found to reduce the fluoride uptake. Desorption studies showed that the fluoride can easily be desorbed at pH 13. CONCLUSION: Nano-AlOOH possesses a maximum fluoride capacity of 3259 mg F− kg−1, which is comparable with that of activated alumina. Maximum adsorption occurred at around pH 7, which makes nano-AlOOH a potential adsorbent for drinking water treatment. Copyright © 2009 Society of Chemical Industry

134 citations

Journal ArticleDOI
TL;DR: In this article, four activated carbons of various origins were impregnated with different concentrations of sodium hydroxide and used as hydrogen sulfide adsorbents in an accelerated test.
Abstract: Four activated carbons of various origins were impregnated with different concentrations of sodium hydroxide and used as hydrogen sulfide adsorbents in an accelerated test. The materials were characterized using nitrogen sorption, thermal analysis, and standard ASTM methods. The results showed that, with increasing loading of NaOH, the H2S breakthrough capacity increases 4−5 times until maximum capacity is reached at about 10% NaOH. This capacity per unit volume of the carbon bed is the same for all carbons and insensitive to their pore structures and surface areas. The specific capacity per unit surface area is also the same for all materials studied, including activated alumina. This indicates that the amount of NaOH present on the surface is a limiting factor for the capacity. By increasing the pH value of the carbon, sodium hydroxide causes an increase in the HS- ion concentration. These ions can be further oxidized to elemental sulfur or sulfuric acid, as suggested by changes in the surface pH values...

132 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20237
202218
202118
202031
201941
201839