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Updated: Aug 4, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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从MoS加载的松石墨相碳化物中光催化合成氨

Fushan Wen1, Xiaoli Huang1, Yajie Li1

  • 1College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 China.

Langmuir : the ACS journal of surfaces and colloids
|June 8, 2023
PubMed
概括

研究人员开发了一种新的松形催化剂用于光催化固定,为哈伯-博什过程提供了一个可持续的替代方案. 这种新材料在可见光下显著提高了降解反应效率.

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Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
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Cycloaddition Reactions: MO Requirements for Photochemical Activation

Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
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Pozzolans

Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
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