(genter 2001). barium and its compounds may be found in nature or produced industrially for various uses. it is a silvery-white metal that can be found in the environment, where it exists naturally. it occurs combined with other chemicals, such as carbon, oxygen, and sulfur. it is ...
Barium, chemical element, one of the alkaline-earth metals of Group 2 of the periodic table. The element is used in metallurgy, and its compounds are used in pyrotechnics, petroleum production, and radiology. Barium has a silvery white luster when freshl
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SulfurNon-isothermal kineticThermodynamic studiesBarium sulfide has been widely accepted as a useful barium compound in many fields. To reduce the emission of CO2 through tail gas during the current industrial production of barium sulfide by the black ash method, a new clean process for barium ...
Metathesis method. Reaction equation: BaCl2 + NH4HCO3 + NH4OH → BaCO3 ↓ + 2NH4Cl + H2O Operational method: At 30℃, 23.6L containing ammonium bicarbonate 56.1g /L aqueous solution and 1.36L ammonia is mixed in 50L kettle and then at 50℃, within 2h dropping 21.6L 200.3g/L barium chlor...
The results suggested that the barium sulfate decomposition followed the Jander D3 spherical symmetry model; the order of the reaction ( n =1.06) was determined using the Carne equation. 展开 关键词: Barium sulfate Barium sulfide Sulfur Non-isothermal kinetic Thermodynamic studies ...
All three lattice constants of the structures are multiplied by a factor k, calculated under the assumption of validity of the Birch–Murnaghan equation of state28 with the bulk modulus K0 = 300 GPa and its first derivative K’ = 3. This approach is a quick alternative to the ...
A contemporary synthesis of pabstite (BaSnSi3O9) was carried out according to the following equation $$ {\text{BaCO}}_{3} + {\text{SnO}}_{2} + 3{\text{SiO}}_{2} \to {\text{BaSnSi}}_{3} {\text{O}}_{9} + {\text{CO}}_{2}$$ with the starting components in 1:1:3...
Filtered, and dried to obtain the precipitated barium carbonate, product contains 0.46% sulfur. Metathesis method. Reaction equation: BaCl2 + NH4HCO3 + NH4OH → BaCO3 ↓ + 2NH4Cl + H2O Operational method: At 30℃, 23.6L containing ammonium bicarbonate 56.1g /L aqueous solution and 1.36L ...
Fresh weight (FW) and dry weight (DW) were determined before and after the drying process. The water content (WC) was determined as in Equation (1) and expressed in mL of H2O·g−1DW: WC=(FW−DW)DW,WC=(FW−DW)DW, (1) ...