Tag: M.W=300-400

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Alumina-coated hollow glass spheres/alumina composites, published in 1997-11-15, which mentions a compound: 17927-65-0, Name is Aluminum(III) sulfate xhydrate, Molecular Al2H8O13S3, Computed Properties of Al2H8O13S3.

Coating of alumina onto the surface of hollow glass spheres was accomplished by controlled heterogeneous precipitation from aqueous solutions The processing conditions were optimized to yield thin and uniform precursor coatings. After calcination, converting the precursor to alumina, the alumina-coated hollow glass spheres formed free-flowing powders that were used to produce glass sphere/alumina matrix composites with up to 35 vol% of controlled and well-dispersed closed porosity. The dielec. constants and the flexural strengths of such porous composites were determined as a function of porosity.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about The influence of environmental factor on the coagulation enhanced ultrafiltration of algae-laden water: Role of two anionic surfactants to the separation performance, the main research direction is environmental factor coagulation enhanced ultrafiltration algae laden water; algae laden water anionic surfactant separation; Algae-laden water; Anionic surfactant; Coagulation; Fouling mechanism; Ultrafiltration.Name: Aluminum(III) sulfate xhydrate.

With the acceleration of urbanization and the improvement of people′s living standards, more chems. that humans rely on are entering the city and surrounding water bodies. Anionic surfactants are one of the essential products for human beings. It is also one of the inducements that cause the eutrophication. The algae-laden water caused by eutrophication is a headache in the traditional water treatment process. To solve the problem, ultrafitration combined process was widely investigated to treat the algae-laden water. The presence of stimuli, low concentration anionic surfactant, probably interfere the performance of ultrafiltration process during algae-laden water treatment. In this study, the influence of two typical anionic surfactants, sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (LAS), on the performance of coagulation-enhanced ultrafiltration was investigated. The aluminum sulfate hydrate and iron sulfate hydrate were resp. employed as coagulant. Based on the residual turbidity and zeta potential, 4 mg/L Al and 8 mg/L Fe were determined as the optimal coagulant dosage. The floc morphol. confirmed that Al-algae flocs with lower fractal dimension (Df) were looser and more porous compared to Fe-algae flocs. More coagulant was depleted by LAS due to the better hydrophobicity of LAS. During the filtration process, LAS caused a larger flux reduction compared with SDS regardless of the coagulant that was used. More organic compounds penetrate into membrane pores and block the pores with the presence of LAS since algal cell aggregation was weakened. Finally, the rejection of organic compounds by the coagulation-enhanced ultrafiltration process was studied, and the co-existing surfactants can cause effluent deterioration. Therefore, the presence of surfactants has a neg. effect to the ultrafiltration treatment of algae-laden water.

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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Drobot, N. M.; Khazanov, E. I. researched the compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0 ).HPLC of Formula: 17927-65-0.They published the article 《Infrared spectroscopic study of phase transformations and the kinetics of the thermal decomposition of aluminum salts》 about this compound( cas:17927-65-0 ) in Izvestiya Nauchno-Issledovatel’skogo Instituta Nefte- i Uglekhimicheskogo Sinteza pri Irkutskom Universitete. Keywords: kinetics dehydration aluminum chloride. We’ll tell you more about this compound (cas:17927-65-0).

The ir spectra were obtained by heating the samples thus showing the penetration of H2O into the structure of the decomposition products of the salts. AlCl3 and Al(NO3)3 are dehydrated up to 100° with formation of basic salts. The NO3 group is present up to 700°. Al2(SO4)3 has 2 forms of H2O of hydration up to 360°. The apparent energy of activation of AlCl3 dehydration is 270 kcal/mole. The presence of the ions SO42-, Cl-, NO3-, OH- affects the thermal decomposition of the salts.

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Computed Properties of Al2H8O13S3. 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 Dielectric measurements in the early stages of hardening of monomineral binders. Author is Svatovskaya, L. B.; Shiballo, V. G..

The dielec. permeability ε of cement hardening systems decreased immediately after preparing suspensions and condensation structures with water were formed having a lower ε. At the end of the hardening process, ε remained constant Because only a small part of the water was chem. bound, the decrease in ε could be connected with the orientation effect. The curves of dielec. losses of the hardening pastes had a complex cyclic character. According to crystallo-optical data, the cyclic character was connected with changes in the phase composition of 3CaO.Al2O3,3CaO.SiO2, and Al2(SO4)3 hydrates and in the 3CaO.Al2O3 + CaSO4 system with the discontinuities of hydrated sulfate aluminate and hydrated aluminate layers.

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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] ).Related Products 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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Application of 17927-65-0. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Solubility and solid phases in the sulfuric acid-sodium sulfate-aluminum sulfate-water system at 50°. Author is Lepeshkov, I. N.; Danilov, V. P.; Selin, A. N.; Kim, V. P.; Zaitseva, L. A.; Gorbacheva, N. N..

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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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 17927-65-0, is researched, Molecular Al2H8O13S3, about The influence of environmental factor on the coagulation enhanced ultrafiltration of algae-laden water: Role of two anionic surfactants to the separation performance, the main research direction is environmental factor coagulation enhanced ultrafiltration algae laden water; algae laden water anionic surfactant separation; Algae-laden water; Anionic surfactant; Coagulation; Fouling mechanism; Ultrafiltration.Name: Aluminum(III) sulfate xhydrate.

With the acceleration of urbanization and the improvement of people′s living standards, more chems. that humans rely on are entering the city and surrounding water bodies. Anionic surfactants are one of the essential products for human beings. It is also one of the inducements that cause the eutrophication. The algae-laden water caused by eutrophication is a headache in the traditional water treatment process. To solve the problem, ultrafitration combined process was widely investigated to treat the algae-laden water. The presence of stimuli, low concentration anionic surfactant, probably interfere the performance of ultrafiltration process during algae-laden water treatment. In this study, the influence of two typical anionic surfactants, sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (LAS), on the performance of coagulation-enhanced ultrafiltration was investigated. The aluminum sulfate hydrate and iron sulfate hydrate were resp. employed as coagulant. Based on the residual turbidity and zeta potential, 4 mg/L Al and 8 mg/L Fe were determined as the optimal coagulant dosage. The floc morphol. confirmed that Al-algae flocs with lower fractal dimension (Df) were looser and more porous compared to Fe-algae flocs. More coagulant was depleted by LAS due to the better hydrophobicity of LAS. During the filtration process, LAS caused a larger flux reduction compared with SDS regardless of the coagulant that was used. More organic compounds penetrate into membrane pores and block the pores with the presence of LAS since algal cell aggregation was weakened. Finally, the rejection of organic compounds by the coagulation-enhanced ultrafiltration process was studied, and the co-existing surfactants can cause effluent deterioration. Therefore, the presence of surfactants has a neg. effect to the ultrafiltration treatment of algae-laden water.

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Campo, F.; Carradore, L.; Furlani, D.; Panfilio, R. published the article 《Adsorbing power of metal hydrates. 1》. Keywords: metal hydrate adsorbent water purification.They researched the compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0 ).Application In Synthesis of Aluminum(III) sulfate xhydrate. 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 adsorption capacity of metal hydrates is, in some cases, greater than that of activated carbon. The compounds, which are obtained from inorganic polyelectrolyte coagulants, are affected by SO42- and by the degree of flocculation and coagulation of the waters.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Solid solution between Al-ettringite and Fe-ettringite (Ca6[Al1-xFex(OH)6]2(SO4)3·26H2O), published in 2009-06-30, which mentions a compound: 17927-65-0, Name is Aluminum(III) sulfate xhydrate, Molecular Al2H8O13S3, Recommanded Product: 17927-65-0.

The solid solution between Al- and Fe-ettringite Ca6[Al1-xFex(OH)6]2(SO4)3·26H2O was investigated. Ettringite phases were synthesized at different Al/(Al + Fe)-ratios (= XAl,total), so that XAl increased from 0.0 to 1.0 in 0.1 unit steps. After 8 mo of equilibration, the solid phases were analyzed by X-ray diffraction (XRD) and thermogravimetric anal. (TGA), while the aqueous solutions were analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS). XRD analyses of the solid phases indicated the existence of a miscibility gap between XAl,total = 0.3-0.6. Some of the XRD reflections showed two overlapping peaks at these molar ratios. The composition of the aqueous solutions, however, would have been in agreement with both, the existence of a miscibility gap or a continuous solid solution between Al- and Fe-ettringite, based on thermodn. modeling, simulating the exptl. conditions.

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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.Gancy, Alan B. published the article 《Preparation and characterization of the nonahydrate and pentahydrate of aluminum sulfate》 about this compound( cas:17927-65-0 ) in Thermochimica Acta. Keywords: aluminum sulfate monohydrate pentahydrate; dehydration aluminum sulfate hydrate; hydration aluminum sulfate hydrate; x ray diffraction aluminum sulfate. Let’s learn more about this compound (cas:17927-65-0).

Crystalline Al2(SO4)3.9H2O was prepared by thermal dehydration of a higher hydrate at a constant total water vapor pressure of one atm. X-ray diffraction anal. shows the compound to be identical to its only previous preparation by crystallization from solution The Al2(SO4)3.5H2O was also prepared using the dehydration technique. Its x-ray diffraction pattern was determined for the first time. Doubt is cast upon the existence of the hexahydrate. The rate of vapor rehydration for both Al2(SO4)3.9H2O and Al2(SO4)3.5H2O was measured. Al2(SO4)9.9H2O is metastable under the conditions employed.

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