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Hace 5 días · Por primera vez, investigadores del Instituto Leibniz de Investigación Troposférica (TROPOS) de Leipzig han demostrado la existencia de ácido sulfuroso (H2SO3) en condiciones atmosféricas en fase gaseosa. Los resultados se han publicado en la revista Angewandte Chemie.
Hace 23 horas · Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid (Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen, and hydrogen, with the molecular formula H2SO4. It is a colorless, odorless, and viscous liquid that is miscible with water.
Hace 1 día · The purple sulfur bacteria and the green sulfur bacteria use hydrogen sulfide as an electron donor in photosynthesis, thereby producing elemental sulfur. This mode of photosynthesis is older than the mode of cyanobacteria, algae, and plants, which uses water as electron donor and liberates oxygen.
Hace 1 día · As a consequence, Li–S batteries with Co-VC modified separator can sustain a stable operation over 700 cycles with negligible capacity decay at 1.0 C, and delivers an areal capacity of 9.0 mAh cm −2 and desired cyclic performance at a high sulfur loading of 7.6 mg cm −2 with a lean electrolyte dosage of 4.0 µL mg S −1 at 0.1 C.
Hace 4 días · Results of these observations, available in a research paper published August 28 on the pre-print server arXiv, suggest that the planet has a sulfur-rich atmosphere. L98-59 is a bright M-dwarf ...
Hace 5 días · Sulfur is a mineral that is critical to the human body. It helps build amino acids and vitamins and is critical to healthy development of skin, bones, nerve cells and other tissues. Sulfur also helps maintain cardiovascular, joint and liver health and may help to prevent cancer.
Hace 4 días · Although the activation of elemental sulfur by main group compounds is well-documented in the literature, the products of such reactions are often heterocyclic in nature. However, the isolation and characterization of sulfur catenates (i.e., acyclic sulfur chains) is significantly less common. In this study, we report the activation of elemental sulfur by the 9-CAAC-9-borafluorene radical (1 ...
