Results 31 to 40 of about 5,497,447 (382)

Accidents with sulfuric acid [PDF]

open access: yesHemijska Industrija, 2006
Sulfuric acid is an important industrial and strategic raw material, the production of which is developing on all continents, in many factories in the world and with an annual production of over 160 million tons.
Rajković Miloš B.
doaj   +1 more source

Sulfuric acid baking and leaching of spent sulfuric acid catalyst [PDF]

open access: yesPeriodica Polytechnica Chemical Engineering, 2011
Vanadium, iron and aluminum were recovered from the spent sulfuric acid catalyst with efficiency of 98%, 95% and 85%, respectively by using low temperature sulphuric acid baking followed by leaching. The optimum baking conditions were four grams of concentrated sulfuric acid per ten grams of spent catalyst at 300 ^\circ C for two hours.
Abdulrahman Wahoud   +2 more
openaire   +2 more sources

Multicomponent new particle formation from sulfuric acid, ammonia, and biogenic vapors

open access: yesScience Advances, 2018
Atmospheric aerosol formation from biogenic vapors is strongly affected by air pollutants, like NOx, SO2, and NH3. A major fraction of atmospheric aerosol particles, which affect both air quality and climate, form from gaseous precursors in the ...
K. Lehtipalo   +91 more
semanticscholar   +1 more source

Ultrastable Imine-Based Covalent Organic Frameworks for Sulfuric Acid Recovery: An Effect of Interlayer Hydrogen Bonding.

open access: yesAngewandte Chemie, 2018
A rapid and scalable synthesis of six new imine-linked highly porous and crystalline COFs is presented that feature exceptionally high chemical stability in harsh environments including conc. H2 SO4 (18 m), conc. HCl (12 m), and NaOH (9 m).
Arjun Halder   +8 more
semanticscholar   +1 more source

Ion-induced sulfuric acid–ammonia nucleation drives particle formation in coastal Antarctica

open access: yesScience Advances, 2018
Antarctica is producing atmospheric aerosol of its own from trace gases emitted by the coastal flora and fauna. Formation of new aerosol particles from trace gases is a major source of cloud condensation nuclei (CCN) in the global atmosphere, with ...
T. Jokinen   +18 more
semanticscholar   +1 more source

Effects of different sulfuric acid etching concentrations on PEEK surface bonding to resin composite.

open access: yesDental materials journal, 2018
This study evaluated the effects of surface pretreatment with different concentrations of sulfuric acid etching on surface properties and bonding between Polyetheretherketone (PEEK) and a resin composite.
P. Chaijareenont   +4 more
semanticscholar   +1 more source

A comparative molecular dynamics study of sulfuric and methanesulfonic acids [PDF]

open access: yes, 2016
The molecular dynamics computer simulation method has been used to study sulfuric and methanesulfonic acids. Calculations have been carried out between 200 K and 400 K using reliable force fields.
Canales Gabriel, Manel   +1 more
core   +2 more sources

The transformations of cellulose after concentrated sulfuric acid treatment and its impact on the enzymatic saccharification

open access: yesBiotechnology for Biofuels and Bioproducts, 2023
Background The dense structure of cellulose lowers its reactivity and hinders its applications. Concentrated sulfuric acid is an ideal solvent to dissolve cellulose and thus has been used widely to treat cellulose. However, the changes of cellulose after
Shengbo Wu   +5 more
doaj   +1 more source

Investigation on the Sulfuric Acid Corrosion Mechanism for Concrete in Soaking Environment

open access: yesAdvances in Materials Science and Engineering, 2018
This paper chooses the apparent diffusion coefficient for OH− (hydroxyl ion) for concrete as an index to evaluate the corrosion degree of concrete subjected to sulfuric acid.
Hongguang Min, Zhigang Song
doaj   +1 more source

Highly efficient removal of sulfuric acid aerosol by a combined wet electrostatic precipitator

open access: yes, 2018
Eliminating sulfuric acid aerosol from flue gas is of vital importance to improve air quality. In this paper, a wet electrostatic precipitator (WESP) assisted with novel pre-charger was proposed to efficiently remove sulfuric acid aerosol.
Zhengda Yang   +6 more
semanticscholar   +1 more source

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