Category: 17927-65-0

Reference of Aluminum(III) sulfate xhydrate. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Study on the structure and composition of anodic oxide films of aluminum. Author is Xu, Tao; Zhao, Jiazheng; Cheng, Jianming; Dang, Hongxin.

The structure and composition of the porous anodic oxide films of Al (abbreviated AOFAl) formed in oxalic acid (I) and H2SO4 (II) solutions, resp., were studied by TEM, IR and TGA. The porous anodic oxide films consist of a large number of hexagonal cells with an irregularly round pore in the center of each cell which penetrates vertically from surface to bottom, while a barrier layer under the film directly contacts with an Al substrate in a scallop shape. The content of Al2(C2O4)3 and Al2(SO4)3 in AOFAl (I) and (II) are ∼4.9% and ∼14.2%, resp.; ∼3.5% H2O of crystallization of Al2(SO4)3.xH2O which can be evolved at rather low temperature (∼85°) enriches between the cells and under the barrier layer of AOFAl (II); after irradiation by the electron beam of TEM the H2O of crystallization is removed and voids are formed.

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Application In Synthesis of Aluminum(III) sulfate xhydrate. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Increase in the hydration activity and improvement in the structural-engineering properties of slag portland cement. Author is Syrkin, Ya. M.; Shokotova, B. G.; Engorn, T. I.; Tokar, V. A.; Zubik, M. I..

The sulfate-aluminate-silicate product, obtained as a tailing in the production of Al sulfate from kaolin clays, is used as an hardening accelerator for slag portland cement. The tailings consist of amorphous SiO2, metakaolinite [15123-81-6], Al2(SO4)3.nH2O, NaAl(SO4)2.12H2O, gypsum [13397-24-5], anhydrite [14798-04-0], and some Fe and Mg sulfates. Initial and final setting times and compressive and tensile strengths are determined of slag portland cements with 1 and 3% of these tailings and those with 1% coke dust. These additives increase the hydration activity of the slag portland cement and its frost resistance and decrease the shrinkage deformation.

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Sychev, M. M.; Shiballo, V. G.; Katushkin, V. P.; Ustinov, A. E. published the article 《Dielectric properties of calcium, zinc, magnesium, copper, aluminum, iron, manganese, nickel, and cobalt sulfates》. Keywords: dielec constant sulfate hydrate cement.They researched the compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0 ).Category: isothiazole. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:17927-65-0) here.

The dielec. constant (κ) of various sulfate hydrates of Ca2+, Zn2+, Mg2+, Cu2+, Al3+, Fe2+, Mn2+, Ni2+, and Co2+ was studied in relation to the n (number of mols. of bound water); the κ increased with an increase in n. A rectilinear equation κ = α + n × tg β is derived, where α = κ of anhydrous salt and tg β = tangent of the angle of curve κ-n. The compressive strength of cement stones, containing these crystallohydrates, decreased with an increase in tg β of the salt.

If you want to learn more about this compound(Aluminum(III) sulfate xhydrate)Category: isothiazole, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(17927-65-0).

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0 ) is researched.Application of 17927-65-0.Lee, H. published the article 《Preparation of Ba-doped γ-Al2O3 from kaolin and its characteristics》 about this compound( cas:17927-65-0 ) in RIST Yongu Nonmun. Keywords: barium doped alumina powder thermal stability. Let’s learn more about this compound (cas:17927-65-0).

The synthesis of γ-Al2O3 powder for catalytic support from kaolin-derived Al sulfate solution was described. Al sulfate hydrate[Al2(SO4)3·nH2O] was precipitated by dropping it into Et alc. The γ-Al2O3 power was prepared by calcination of the precipitate The powder showed thermal stability after calcination at 1000° for 2 h. However, the powder calcined at 1200° for 2 h was fully transformed into γ-Al2O3. Ba-doped γ-Al2O3 samples were prepared by impregnation of γ-Al2O3 with appropriate solution concentrations(mol%) of Ba chloride [Ba]/([Ba]+[Al]). The effect of Ba addition on the thermal stability of the Ba-doped γ-Al2O3 was studied. The amount of the additive was 2-10 mol% with respect to the γ-Al2O3. The additions of 4 mol% and 8 mol% Ba were effective at 1250° and 1450° in retarding the γ-Al2O3 transition due to the formation of Ba hexaaluminate(BaAl12O19). The activation energies of the γ-Al2O3 → α-Al2O3 transition in samples with and without 4 mol% Ba-doped were calculated in accordance with the Arrhenius equation and resulted in 114.5 Kcal/mol and 137.8 Kcal/mol, resp.

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Pradhananga, Trinetra M.; Matsuo, Sadao published an article about the compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0,SMILESS:O=S(O)(O)=O.O=S(O)(O)=O.O=S(O)(O)=O.[H]O[H].[Al].[Al] ).Category: isothiazole. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:17927-65-0) through the article.

The D/H fractionation factors (α) of some of the sulfate hydrate-H2O systems were measured. A dependence of α on cationic parameters and M-H2O distance was found. The D/H fractionation factors of various hydrate-water systems were divided into 2 groups with respect to their α values: one having α < 1 and the other α > 1. There is almost no change in α for crystal-H2O systems having SO42- as the anion of the 1st transition metal ion series from Fe2+ to Zn2+, except for Cu2+. This is related to the common structure of the hydration sphere of cations and the common distance of M-H2O. The exceptional case for Cu2+ is attributed to the distorted structure of octahedra surrounding Cu2+. A similar type of behavior of protons leading to the residual entropy was found in some of the crystal-H2O systems having α > 1.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《The thermal decomposition of the hydrates, nitrates and oxide of aluminum》. Authors are Parravano, N.; Malquori, G..The article about the compound:Aluminum(III) sulfate xhydratecas:17927-65-0,SMILESS:O=S(O)(O)=O.O=S(O)(O)=O.O=S(O)(O)=O.[H]O[H].[Al].[Al]).Reference of Aluminum(III) sulfate xhydrate. Through the article, more information about this compound (cas:17927-65-0) is conveyed.

Al(NO3)3.6H2O is formed when Al(NO3)3.9H2O is maintained at ordinary temperature over P2O5 in vacuo, or by repeated treatment of Al(NO3)3.9H2O with hot HNO3.H2O. Al(NO3)3.6H2O has already been prepared in other ways (cf. Inamura, Mem. Coll. Sci. Kyoto 4, 105(1919); C. A. 14, 2451). A new hydrate, Al(NO3)3.4H2O, was prepared by maintaining Al(NO3)3.6H2O in contact with excess N2O5 at ordinary temperature for 12 h. It remains unaltered up to 180°, at which temperature it decomposes to Al2O3, N2O5 and H2O. The thermal decomposition curve of Al(NO3)3.9H2O showed breaks at 73.5°, 140° and 200°, corresponding to fusion and conversion to Al(NO3)3.6H2O, to decomposition of the latter to the basic salt, 4Al2O3.3N2O5. 14H2O, and to decomposition of the latter to Al2O3. The curve of AlCl3.6H2O showed breaks at 122° and at 180°, the latter corresponding to decomposition of Al2O3. Al2(SO4)3.18H2O behaves differently. At 105° it becomes anhydrous and at 760° the Al2(SO4)3 decomposes to Al2O3 and SO3. Samples from various sources of Al2O3 containing different proportions of H2O of hydration were then heated, and the curves were compared with those of gibbsite, diaspore and bauxite. The results were complicated and difficult of interpretation but indicate that the breaks in the curve which were observed were caused by the formation of lower hydrates of definite chem. composition and (2) by adsorption phenomena.

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Kloprogge, J. T.; Frost, R. L. published an article about the compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0,SMILESS:O=S(O)(O)=O.O=S(O)(O)=O.O=S(O)(O)=O.[H]O[H].[Al].[Al] ).Product Details of 17927-65-0. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:17927-65-0) through the article.

The tridecameric Al polymer [AlO4Al12(OH)24(H2O)12]7+ was prepared by forced hydrolysis of Al3+ up to an OH/Al molar ratio of 2.2. Upon addition of sulfate the tridecamer crystallized as the monoclinic basic Al sulfate Na0.1[AlO4Al12(OH)24(H2O)12](SO4)3.55. These crystals were studied using Raman microscopy at 300 and 77 K and compared to Na2SO4.xH2O and Al2(SO4)3.xH2O. The Raman spectrum of basic Al sulfate is dominated by 2 broad bands, which are assigned to the ν2 and ν4 SO42- triplets at 446, 459 and 496 and 572, 614 and 630 cm-1. The ν1 is observed as a single band at 990 cm-1, partly overlapped by the ν3 triplet at 979, 1009 and 1053 cm-1 of the sulfate group in the Al13 sulfate structure. Also the band at 726 cm-1 is assigned to an Al-O mode of the polymerized Al-O-Al bonds in the Al13 Keggin structure. The OH-stretching region of the basic Al sulfate was reported. The 77 K spectrum shows 3 crystal H2O bands at 3035, 3138 and 3256 cm-1 accompanied by 3 Al-H2O bands at 3354, 3418 and 3498 cm-1 and 4 Al-OH bands at 3533, 3584, 3671 and 3697 cm-1.

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Safety of Aluminum(III) sulfate xhydrate. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Application of high rate ballasted flocculation technology in wet weather flow treatment. Author is Stachowiak, Remy G..

An innovative treatment technol. to address wet weather events is the ballasted flocculation process (e.g. Actiflo/Microsep from USFilter). The principal benefits of a ballasted flocculation treatment system for wet weather flows include vastly reduced space requirements, rapid start-up and response times, relative insensitivity to fluctuations in raw water quality, and removal rates greater than conventional systems. The key behind the ballasted flocculation process is the use of continuously recycled ballast or fine sand, which attaches to a flocculated particle through a polymer bridge. The addition of ballast provides 2 benefits: the high sp. gr. sand weights flocculated particles leading to much faster solids settling, and the increase in collision frequencies between sand and flocculated particles dramatically increases flocculation kinetics, resulting in very short mixing times. With rapid particulate settling and flocculation kinetics in ballasted flocculation systems, process design must focus on several fundamental parameters within the clarifier to maximize removal efficiencies and minimize plant footprint. This design approach was adopted in pilot testing of the USFilter ballasted flocculation process during wet weather flows at a variety of sites from 1997 through 1999. High quality, consistent effluent characteristics were achieved despite varying influent conditions. High quality effluent was produced within minutes of start-up, ideal for addressing transient wet weather or peaking events. Removal efficiencies through the ballasted flocculation process of over 85% for total suspended solids and over 60% for BOD were demonstrated. Even with a total hydraulic retention time of 6 min, sufficient residence time for mixing and flocculation was available, resulting in a very small footprint approach for wet weather treatment. With high levels of solids removal in a compact footprint, ballasted flocculation provides a cost competitive alternative to conventional clarification and biol. systems for treating wet weather flows.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0 ) is researched.Related Products of 17927-65-0.Sauer, Harold A.; Lewis, John A. published the article 《Freezing droplets of aqueous solutions for the cryochemical process》 about this compound( cas:17927-65-0 ) in AIChE Journal. Keywords: freezing solution droplet cryochem process; ceramic oxide preparation cryochem process; aluminum sulfate solution freeze drying. Let’s learn more about this compound (cas:17927-65-0).

In the cryochem. process for preparing ceramic oxides, a method was developed for freezing droplets of aqueous salt solutions Injection and freezing are conducted in a 2-phase liquid refrigerant. The droplets rise in the refrigerant. freeze, and float at the top. An aqueous solution of Al2(SO4)3.17H2O was freeze-dried.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Solubility and solid phases in the sulfuric acid-sodium sulfate-aluminum sulfate-water system at 50°》. Authors are Lepeshkov, I. N.; Danilov, V. P.; Selin, A. N.; Kim, V. P.; Zaitseva, L. A.; Gorbacheva, N. N..The article about the compound:Aluminum(III) sulfate xhydratecas:17927-65-0,SMILESS:O=S(O)(O)=O.O=S(O)(O)=O.O=S(O)(O)=O.[H]O[H].[Al].[Al]).Quality Control of Aluminum(III) sulfate xhydrate. Through the article, more information about this compound (cas:17927-65-0) is conveyed.

Solubility and composition of the solid phases in the H2SO4-Na2SO4-Al2(SO4)3-H2O system were determined for H2SO4 concentrations of 3-12 weight%. Under the given conditions Na2SO4, NaAl(SO4)2.12H2O and Al2(SO4)3.17H2O crystallize.

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