Results 291 to 300 of about 5,409,070 (357)

Equilibrium Structure of Sulfuric Acid [PDF]

open access: possibleThe Journal of Physical Chemistry A, 2007
The equilibrium structure of the more stable conformer of H2SO4, of C2 symmetry, has been calculated ab initio using the CCSD(T) method and taking into account the core correlation correction. The accuracy of this structure has been checked by comparing it to that of similar molecules and by estimating the effects of basis set enlargement and of ...
Demaison, J.   +3 more
openaire   +2 more sources

Radiolysis of sulfuric acid, sulfuric acid monohydrate, and sulfuric acid tetrahydrate and its relevance to Europa

Icarus, 2011
We report laboratory studies on the 0.8 MeV proton irradiation of ices composed of sulfuric acid (H2SO4), sulfuric acid monohydrate (H2SO4 H2O), and sulfuric acid tetrahydrate (H2SO4 4H2O) between 10 and 180 K. Using infrared spectroscopy, we identify the main radiation products as H2O, SO2, (S2O3)x, H3O+, HSO4(exp -), and SO4(exp 2-).
Reggie L. Hudson   +3 more
openaire   +2 more sources

Sulfur and Sulfuric Acid

2007
Sulfur is one of the few elements that is found in its elemental form in nature. Typical sulfur deposits occur in sedimentary limestone/gypsum formations, in limestone/anhydrite formations associated with salt domes, or in volcanic rock [1]. A yellow solid at room temperature, sulfur becomes progressively lighter in color at lower temperatures and is ...
Gerard E. d’Aquin, Robert C. Fell
openaire   +2 more sources

Sulfuric Acid on Europa and the Radiolytic Sulfur Cycle

Science, 1999
A comparison of laboratory spectra with Galileo data indicates that hydrated sulfuric acid is present and is a major component of Europa's surface. In addition, this moon's visually dark surface material, which spatially correlates with the sulfuric acid concentration, is identified as radiolytically altered sulfur polymers.
Mark S. Anderson   +2 more
openaire   +3 more sources

Corrosion of Refinery Equipment By Sulfuric Acid and Sulfuric Acid Sludges

Corrosion, 1954
Characteristics of sulfuric acid solutions encountered in refineries, the types and kinds of containers, piping, valves, heaters and other equipment used to handle it are considered by the authors with respect to their corrosion resistance and certain other related qualities. Materials of construction for construction, fabrication and design details of
R. J. Hafsten, V. J. Groth
openaire   +2 more sources

Sulfur and Sulfuric Acid

1992
Sulfur is one of the few elements that is found in its elemental form in nature. Typical sulfur deposits occur in sedimentary limestone/ gypsum formations, in limestone/anhydrite formations associated with salt domes, or in volcanic rock.4 A yellow solid at normal temperatures, sulfur becomes progressively lighter in color at lower temperatures and is ...
openaire   +2 more sources

Sulfurization of Hyteropoly Acids

Acta Physico-Chimica Sinica, 1996
The sulfurization of several heteropoly acids (HPA), which have been applied as catalysts frequently in recent years, have been studied by IR spectra and temperature programmed sulphurization technology. The result showed that sulphurization of PMo12 is the easiest one among the three kinds of HPA (PMo12, PW12, SiW12).
Wang Xin-Ping   +4 more
openaire   +2 more sources

Transformation of hydroxyiminoacetoacetanilides in sulfuric acid [PDF]

open access: possibleRussian Journal of Organic Chemistry, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
D. I. Ilyushkin   +2 more
openaire   +2 more sources

Color Reactions of Veratrum Alkaloids with Sulfuric Acid and Sulfuric Acid Reagents

Journal of Pharmaceutical Sciences, 1964
Veratrum alkaloids, when treated with concentrated sulfuric acid, or “sulfuric acid reagents” give red, purple, yellow, or violet with characteristic absorption maxima. This reaction can be used as the basis of a simple, rapid colorimetric method for the determination of isolated samples of this class of alkaloids.
openaire   +3 more sources

Open ocean and coastal new particle formation from sulfuric acid and amines around the Antarctic Peninsula

Nature Geoscience, 2021
J. Brean   +5 more
semanticscholar   +1 more source

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