吸附物理現象一種,話物體表面流體濃度會增加[1]。無論氣體液體、定固體咗,佢哋啲原子離子分子住物體表面[2][3]。個現象同吸收唔同,吸收會穿過表面[4],而吸附就唔穿唔過,祗停喺表面。不過,吸收之前,好多時會吸附咗先。

吸收吸附對比
吸附模形。分子任意分佈成多層,有多有少。
活性炭為吸附劑

受附嘅嘢就叫吸附劑,附喺上面嘅嘢就叫吸附質

表面張力一樣,都係表面能作怪。物料表面,當中原子同原子之間,鍵能完全滿足,就唔會有吸附。然而,一但唔能滿足,就會吸引其他啲。祇爭少少能量,就有物理吸附,一般祇涉及范德華力,會容易啲甩。爭得多,就有化學吸附,會生成共價鍵,就好難甩。亦有話靜電吸引[5][6]催化劑活性炭之類,就同吸附有關。

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  2. Guruge, Amila Ruwan (2021-02-17). "Absorption Vs Adsorption". Chemical and Process Engineering (美國英文). 喺2023-11-26搵到.
  3. "Glossary". The Brownfields and Land Revitalization Technology Support Center. 原著喺2008-02-18歸檔. 喺2009-12-21搵到.
  4. "absorption (chemistry)". Memidex (WordNet) Dictionary/Thesaurus. 原著喺2018-10-05歸檔. 喺2010-11-02搵到.
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