chemosorption

Thân thiện

A scientist observes chemosorption on a metal catalyst in a laboratory.

Definition

Noun: * Chemosorption: A type of adsorption, especially an irreversible one, where a substance (typically a gas or liquid) adheres to a surface primarily through chemical bonding forces rather than weaker physical forces. It involves the formation of chemical bonds between the adsorbate and the adsorbent surface.

Usage

Chemosorption is a scientific term used primarily in chemistry, physics, and materials science to describe a specific surface phenomenon. It contrasts with physisorption, which involves weaker physical forces like van der Waals interactions. * The process of chemosorption is critical for the functioning of many industrial catalysts. * A key characteristic of chemosorption is that it often involves a significant activation energy and results in a monolayer of the adsorbed substance.

Examples

• The chemosorption of oxygen onto a clean metal surface can lead to the formation of a stable oxide layer.
• Researchers studied the chemosorption of carbon monoxide on the platinum catalyst.
• The irreversible nature of the chemosorption process makes it suitable for certain gas purification applications.

Advanced Usage

• Chemisorptive (adjective): Describing a property or process related to chemosorption.
  • The material's chemisorptive capacity for hydrogen was remarkably high.
• Chemisorb (verb): The act of binding via chemosorption.
  • Nitrogen molecules chemisorb onto the iron catalyst before reacting.

Variants and Related Words

• Chemisorption: A direct synonym for chemosorption. The terms are often used interchangeably.
• Adsorption: The broader general process of a substance accumulating on a surface, which includes both chemosorption and physisorption.
• Physisorption: Adsorption via physical forces, a process distinct from chemosorption.
• Sorbent: The material on which adsorption occurs.
• Sorbate: The substance that is adsorbed.

Synonyms

• Chemisorption
• Chemical adsorption

Antonyms

• Physisorption
• Physical adsorption
• Desorption (the reverse process of removal from a surface)

Học thuật

Noun

1. adsorption (especially when irreversible) by means of chemical instead of physical forces
   • chemisorption of gaseous nitrogen on iron catalysts

Từ đồng nghĩa

• chemisorption