関連する実験動画

Updated: Jul 12, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
10:04

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

Published on: May 26, 2014

汚染粒子としての硫酸塩:炭素 (ソート) 粒子の触媒的形成

T Novakov, S G Chang, A B Harker

    Science (New York, N.Y.)
    |October 18, 1974
    PubMed
    まとめ

    細部に分割された炭素,またはニキビは,汚染された空気中の二酸化硫黄の硫酸への変換を大幅に助けます. 灰塵粒子のこの触媒酸化機構は,現実世界の大気観測と一致しています.

    さらに関連する動画

    Fabrication and Testing of Catalytic Aerogels Prepared Via Rapid Supercritical Extraction09:28

    Fabrication and Testing of Catalytic Aerogels Prepared Via Rapid Supercritical Extraction

    Published on: August 31, 2018

    Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells15:08

    Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

    Published on: September 20, 2012

    関連する概念動画

    The Sulfur Cycle01:22

    The Sulfur Cycle

    Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
    Microbes and the Sulfur Cycle01:29

    Microbes and the Sulfur Cycle

    Sulfur is a vital element in Earth's biogeochemical systems. It transitions through various inorganic states, including sulfate (SO₄²⁻), elemental sulfur (S⁰), and sulfide (S²⁻). Abiotic and biological mechanisms across oxic and anoxic environments intricately mediate these transformations. Sulfate, the most oxidized form of sulfur, is predominantly stored in rocks, marine sediments, and oceanic waters, acting as a long-term reservoir in the global sulfur cycle.In oxic environments,...
    Sulfur Assimilation01:20

    Sulfur Assimilation

    Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to become...
    Electrophilic Aromatic Substitution: Sulfonation of Benzene01:22

    Electrophilic Aromatic Substitution: Sulfonation of Benzene

    Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
    Preparation and Reactions of Sulfides02:26

    Preparation and Reactions of Sulfides

    Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
    Catalysis02:50

    Catalysis

    The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.