نتایج جستجو برای: were 0025 m h2so4
تعداد نتایج: 3824851 فیلتر نتایج به سال:
Exposures to acidic aerosol in the atmosphere are calculated from data reported in the scientific literature. The majority of date was not derived from studies necessarily designed to examine human exposures. Most of the studies were designed to investigate the characteristics of the atmosphere. However, the measurements were useful in defining two potential exposure situations: regional stagna...
Nano silica-H2SO4 is an efficient and mild catalysis system for the regeneration of aldehyde from aldoximes. Ketoximes are converted to amides by Beckmann rearrangement in the presence of nano silica-H2SO4. The reactions are carried out in solvent-free conditions under microwave irradiation (600 W) within 50-120 sec in good yields.
Traditional vanadium batteries use pure sulfuric acid as electrolyte, but H2SO4 does not absorb enough vanadium ions to make the electrolyte an efficient energy source. This study investigates the effect of hydroxylation process on electrochemical and operational properties of carbon felt electrode in VOSO4 solution with an optimized supporting electrolyte (a mixture of six parts HCl and 2.5 pa...
Potentiodynamic, impedance measurements were carried out on 304 stainless steel in 0.5N, 1.0, 2.0 and 5.0 N H2SO4 solutions. X-ray photoelectron spectroscopic [XPS] studies carried out on 304 stainless steel in H2SO4 solutions revealed the existence of CrOOH, Cr2O3, -Fe2O3, FeOOH, Mn2O3, Mn3O4, MnS, Ni (OH)2, Ni2O3, NiO, sulphides. The passive film found to contain chromium oxide inner layer an...
*Members of the American Dietetic Association Quality Management Committee 2006-2007 and 2007-2008: Sandra J. McNeil, MA, RD, FADA (chair, 20062007); Joanne B. Shearer, MS, RD (chair, 2007-2008); Rita M. Johnson, PhD, RD, FADA; Sue Kent, MS, RD; Catherine J. Klein, PhD, RD; Kathleen W. McClusky, MS, RD, FADA; Glenna R. McCollum, MPH, RD; Nancy L. Nevin-Folino, MEd, RD, CSP, FADA; Joyce A. Price...
We report both a facile, scalable method to prepare reduced graphene oxide hydrogels through the electrodeposition of graphene oxide and its use as an electrode for high-performance supercapacitors. Such systems exhibited specific capacitances of 147 and 223 F g(-1) at a current density of 10 A g(-1) when using H2SO4 and H2SO4 + hydroquinone redox electrolytes, respectively.
In this contribution, we successfully applied demineralization (i.e., solvent-assisted separation and acid washing) for the removal of carbonaceous solids inorganics from a biocrude obtained catalytic hydrothermal liquefaction (HTL) Miscanthus. The experimental results all six employed acids showed that 0.1 M H2SO4 was most effective significantly reduced metallic (Fe by 93.9%, <15 µg/g Mg 9...
Sulfuric acid is an important gas influencing atmospheric new particle formation (NPF). Both the binary (H2SO4–H2O) system and the ternary system involving ammonia (H2SO4–H2O–NH3)may be important in the free troposphere. An essential step in the nucleation of aerosol particles from gas-phase precursors is the formation of a dimer, so an understanding of the thermodynamics of dimer formation ove...
In this research, the main investigation on macro level and durability characteristics of medium high strength geopolymer concrete composites, where cement is completely replaced with cementitious material integration granulated ground blast furnace slag (GFS) metakaolin (MKL) along sodium hydroxide (8 M, 10 16 M 20 M) silicate solution were rummage-sale as energizing binders. Many researchers ...
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