Tag: M.W=300-400

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Tribochemistry and kinetics of Al2(SO4)3.xH2O decomposition.Related Products of 17927-65-0.

The thermal decomposition of tribochem. activated Al2(SO4)3.xH2O was studied by TG, DTA and EMF methods. For some of the intermediate solids, x-ray diffraction and IR-spectroscopy were applied to learn more about the reaction mechanism. Thermal and EMF studies confirmed that, even after mech. activation of Al2(SO4)3.xH2O, Al2O(SO4)2 is formed as an intermediate. Isothermal kinetic experiments demonstrated that the thermochem. sulfurization of inactivated Al2(SO4)3.xH2O has an activation energy of 102.2 kJ.mol-1 in the temperature range 850-890 K. The activation energy for activated Al2(SO4)3.xH2O in the range 850-900 K is 55.0 kJ.mol-1. The time of thermal decomposition is almost halved when Al2(SO4)3.xH2O is activated mech. The results permit conclusions concerning the efficiency of the tribochem. activation of Al2(SO4)3.xH2O and the chem. and kinetic mechanisms of the desulfurization process.

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Formula: Al2H8O13S3. 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 Preparation of hollow zeolites with aliphatic polyols under hydrothermal conditions. Author is Chen, Qing-chun.

Taking al2(SO4)3·(14∼18)H2O and Na2SiO3·5H2O as main raw materials, several kinds of fine powders were prepared by using simple hydrothermal synthesis method. The XRD tests showed that one kind of the powders was composite of analcime and sodalite, and its SEM images showed that the fine powders were uniform hollow spheres with diameter under 5 μm. The other two kinds of powders were zeolite P, and their SEM images showed that they were hollow octahedrons with diameter of around 30 μm.

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Synthetic Route of Al2H8O13S3. 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 Freezing droplets of aqueous solutions for the cryochemical process. Author is Sauer, Harold A.; Lewis, John A..

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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Application In Synthesis 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 Infrared spectroscopic study of phase transformations and the kinetics of the thermal decomposition of aluminum salts. Author is Drobot, N. M.; Khazanov, E. I..

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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Synthetic Route of Al2H8O13S3. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Assessment of fixed bed of aluminum infused diatomaceous earth as appropriate technology for groundwater defluoridation. Author is Oladoja, N. A.; Drewes, J. E.; Helmreich, B..

Excessive occurrence of F- in groundwater supplies is a major issue in many regions of the world. In order to produce a reactive filter (AD) for use as an appropriate groundwater defluoridation technol., the classical co-precipitation method was adopted to enrich diatomaceous earth with alumina. In a laboratory-scale water system, the breakthrough profile, fixed bed operation parameters and the mass transfer parameters of an AD column reactor were determined to obtain design parameters for real GW defluoridation applications. The defluoridation process variables studied (i.e., AD bed height and initial F- concentration) had a direct impact on column breakthrough and operating parameters. The mass transfer anal. revealed that external and internal diffusion were not the rate-limiting step of the defluoridation process in the column reactor. Considering the magnitude of the desorbed F- and the phys. integrity of the spent AD using selected regeneration solvents (HCl, HNO3, H2SO4, NaOH and CH3COOH) at 2 different concentrations (0.1 and 0.05M), CH3COOH was identified as the most suitable solvent to regenerate spent AD. The presence of a substantial amount of total inorganic C (68 mg/L), whose dominant species is HCO3-, resulted in a decrease in defluoridation efficiency using real groundwater. Based on the physicochem. characteristics of the AD reactor effluents, we proposed a non-specific mode of adsorption as one of the underlying defluoridation mechanism. This was in addition to the specific mode of adsorption that was revealed earlier as the underlying mechanism of F- removal using AD.

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Category: isothiazole. 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 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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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Water pollution in sake industry. VI. Treatment of the polluted water discharged at the rice washing by addition of iron, published in 1972, which mentions a compound: 17927-65-0, mainly applied to sake manufacture water pollution; rice washing iron addition, Safety of Aluminum(III) sulfate xhydrate.

Suspended substances (SS) in the polluted water were coagulated by the addition of polyaluminum chloride (PAC) solution and Al2(SO4)3.16-18H2O, or FeCl2.xH2O, or FeSO4.7H2O, or Fe2(SO4)3.xH2O solution FeCl3 was most effective for removal of SS and COD. Addition of <200 ppm Fe3+ resulted in a residue of >10 ppm Fe3+ in the treated water. Successive addition of FeCl3, polyacrylamides (PAA), PAC, and PAA to the polluted water, followed by stirring and pH adjustment at 7.0 resulted in a rapid coagulation and almost all SS and >95% of COD were removed and residual Fe became <0.1 ppm. As far as I know, this compound(17927-65-0)Safety of Aluminum(III) sulfate xhydrate can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

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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.SDS of cas: 17927-65-0.Zhu, Tingting; Qu, Fangshu; Liu, Bin; Liang, Heng published the article 《The influence of environmental factor on the coagulation enhanced ultrafiltration of algae-laden water: Role of two anionic surfactants to the separation performance》 about this compound( cas:17927-65-0 ) in Chemosphere. Keywords: environmental factor coagulation enhanced ultrafiltration algae laden water; algae laden water anionic surfactant separation; Algae-laden water; Anionic surfactant; Coagulation; Fouling mechanism; Ultrafiltration. Let’s learn more about this compound (cas:17927-65-0).

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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Reference of Aluminum(III) sulfate xhydrate. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. 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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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.Product Details of 17927-65-0.Hilal, Nidal; Busca, Gerald; Talens-Alesson, Federico; Atkin, Brian P. published the article 《Treatment of waste coolants by coagulation and membrane filtration》 about this compound( cas:17927-65-0 ) in Chemical Engineering and Processing. Keywords: waste coolant coagulation membrane filtration. Let’s learn more about this compound (cas:17927-65-0).

The treatment of waste coolant (Mobilcut 232) from cutting tools was studied by 3 processes. The 1st pre-treatment process, coagulation was tested using 4 conventional industrial coagulants, Al sulfate hydrate, Al chloride, Fe sulfate pentahydrate and Fe chloride. The 2nd process was filtering the supernatant produced from the 1st stage using 2 nanofiltration membranes of 500 and 2000 Da. The 3rd process used ultrafiltration method using a 100,000 Da membrane. The critical coagulation concentration of the different coagulants was determined and the quality of the supernatant was compared to the permeate produced by ultrafiltration. The parameters compared were TOC, absorbance at 400 nm and pH. The performances of both nanofiltration membranes were evaluated. The surface morphol. and pore size distribution of the NF and UF membranes were studied with an at. force microscope.

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