Alumina Alcoa

Web site www.alumina.alcoa.com Parent Company Alcoa, Inc. (USA)... 

Vz grams of the residue were dissolved in 10 ml of benzene, and the solution was passed over a chromatographic adsorption column containing 50 grams of alumina (Alcoa activated alumina. Grade F-20) which had previousiy been shaken for about 20 minutes with a mixture of 100 ml of benzene containing 1.5 ml of 10% acetic acid. 

Ethynyl-p-ionol Dimethyl sulfoxide Ethyl bromide Copper chloride Alumina (Alcoa F-20)... 

The following morning a precipitate of Et2NHHCI was present. The mixture was washed twice with brine, five times with 15% acetic acid, then with water, and finally with NaHC03 solution. After drying with sodium sulfate, the product was concentrated under vacuum. Unchanged starting ether was removed by treatment with neutral alumina (Alcoa F-20). 

First results on n-complexation sorbents for desulfurization with Ag-Y and Cu(I)-Y zeolites have been reported recently [3,4]. In this work, we included the known commercial sorbents such as Na-Y, Na-ZSMS, H-USY, activated carbon and activated alumina (Alcoa Selexsorb) and made a direct comparison with Cu(l)-Y and Ag-Y which were the sorbents with n-complexation capability. Thiophene and benzene vapors were used as the model system for desulfurization. Although most of these studies can be applied directly to liquid phase problems, Cu-Y (auto-reduced) and Ag-Y zeolites were also used to separate liquid mixtures of thiophene/benzene, thiophene/n-octane, and thiophene/benzene/n-octane at room temperature and atmospheric pressure using fixed-bed adsorption/breakthrough techniques. These mixtures were chosen to understand the adsorption behavior of sulfur compounds present in hydrocarbon liquid mixtures and to study the performance of the adsorbents in the desulfurization of transportation fuels. Moreover, a technique for regeneration of the adsorbents was developed in this study [4]. 

Fig. 10.5. Adsorption from solution containing [Pt(NH3)4] + (as chloride) onto silica gel (Davison 70, 370 g" ) and y-alumina (Alcoa F-20,204 gf ) as a function of pH. Room temperature. O, silica...

NaX Zeolite (Bayer, Germany) BPL Carbon (Calgon, U.S.A.) Molecular Sieve Carbon (Takeda, Japan) H151 Alumina (Alcoa, U.S.A.) Silica Gel (Grace, U.S.A.)... 

Trade Publication (F35-14481), Dehydrating Liquids With Alcoa Activated Aluminas, Alcoa, Pittsburgh, Pennsylvania, U.S.A., 15219. 

Fig. 4-4. Adsorbent linear capacity as a function of absorbent type and relative deactivation by water (19,19d). (a) Narrow pore silica (Davison Code 12, 190 preactivation) (b) medium pore silica (Davison grade MS, 190 preactivation) (c) wide pore silica (Davison code 62, 190 preactivation) (d) medium pore alumina (Alcoa F-20,...

Alcoa World Chemicals, 4701 Alcoa Rd., PO Box 67, Bauxite, AR, 72011, USA (Tel 501-776-4760 800-643-8771 FAX 800-874-0481 E-mail AlcoaCustService.Ark alcoa.com Internet wvrw.alumina.alcoa.com)... 

Fujimi WA t[Fujimi http //www.fuJimico.com], Fumed Aluminum Oxide C [Degussa/Fillers Pigments] Linde A t[Praxair http //www.praxair.com]-, Maftec [Mitsubishi Chem. http //www.m-kagaku.co.Jp/index en.htm]-, Premalox 10 [Alcoa http //www.alumina.alcoa.com] Premalox FG t[Alcoa... 

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Realox A-4000 t[Alcoa http //www.alumina.alcoa.com]-, Realox RG-100 [Alcoa http //www.alumina.alcoa.com], Realox RG-152 [Alcoa http //www.alumina.alcoa.com], S-201 t[UOP http //www.uop.com], Saffil [Thermal Ceramics http //www.thermalceramics.com] SAFFIL CG (Catalytic Grade) [Saffil Ltd http //www.saffil.com], SAFFIL High Alpha Grade [Saffil Ltd http //www.saffil.com], SAFFIL Low Alpha Grade [Saffil Ltd http //www.saffil.com], Selexsorb CDO-200 [Alcoa http //www.alumina.alcoa.com], Selexsorb COS [Alcoa http //www.alumina.alcoa.com]... 

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Micral 916 [Huber Engineered Materials http //www.huberemd.com], Micral 932 [Huber Engineered Materials http //www.huberemd.com], Micral 1000 [Huber Engineered Materials http //www.huberemd.com], Micral 1500 [Huber Engineered Materials http //www.huberemd.com] Onyx Classica OC-1000 [Alcoa http //www.alumina.alcoa.com] Onyx Classica OC-2000 [Alcoa http //www.alumina.alcoa.com] Onyx Classica OC-3000 [Alcoa http //www.alumma.alcoa.com] Onyx Classica OC-3300 f[Alcoa http //www.alumma.alcoa.com] Onyx Classica OC-6100 t[Alcoa http //www.alumma.alcoa.com] Onyx Elite ... 

Manuf./Distnb. ABCR http //www.abcr.de] Whittaker, Clark Daniels http //www.wcdinc.com Trade Name Synonyms CA-25 t[Alcoa http //www.alumina.alcoa.com]... 

A mixture of phenylacetic acid, a slight excess of hydrazine hydrate, activated alumina (Alcoa F-1), and 1-butanol heated with vigorous stirring in an oil bath at 140-150°, benzene added gradually to maintain a heavy reflux at 94-95° with water separation in a Dean-Stark apparatus, and the product isolated after 5 hrs. -> phenylacetyl hydrazide. Y 99%. — Alumina shows a remarkable catalytic activity promoting exclusively the formation of monoacylhydrazide. The catalyst permits lowering of the reaction temp, to a point where byproducts are no longer formed. The water produced must be continuously removed. F. e. s. T. Rabini and G. Vita, J. Org. Chem. 30, 2486 (1965). 

Onyx Classica, Hydrated aluminas, Alcoa Industrial Chemicals... 

Physical properties 1. Silica gel (Davison 03) 2. SlUca-base beads (Sorbead R) 3. Activated alumina (Alcoa grade F-1) 4. Alumina-base beads (LaRoche A-201) 5. Activated bauxite 6. Molecular sieve 4A 5A)... 

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