txheej txheem adsorption yog ntau ntawm physiosorption ntau zaus ntau dua li chemisorption. … Ob hom adsorption -lub cev thiab tshuaj tuaj yeem tshwm sim. Ob leeg koom nrog affinity ntawm tus adsorbate thiab lub active nto ntawm lub adsorbent.
Chemisorption tshwm sim li cas?
Chemisorption yog ib hom adsorption uas koom nrog cov tshuaj tiv thaiv ntawm qhov chaw thiab cov adsorbateCov tshuaj tiv thaiv tshiab tau tsim tawm ntawm qhov adsorbant nto. … Kev sib cuam tshuam zoo ntawm cov adsorbate thiab substrate nto tsim cov khoom siv hluav taws xob tshiab.
Puas yog physisorption muaj zog dua chemisorption?
Cov ntawv cog lus no yog yuav luag muaj zog li cov khoom siv tshuaj sib xyaw ua ke, ntau zog dua li van der Waals quab yuam cov yam ntxwv ntawm lub cev adsorption. Cov cua sov tso tawm los ntawm qhov adsorption no yog li 50-100 kcal / mol, thiab cov tshuaj lom neeg absorbed molecules feem ntau hloov.
Yam twg zoo ib yam rau lub cev thiab tshuaj adsorption?
Lub cev nqus tau tshwm sim thaum cov pa roj adsorbate tau tuav los ntawm lub cev rog xws li Van der Waals rog. Cov tshuaj adsorption tshwm sim thaum lub absorbate molecule nyob rau ntawm lub adsorbent nto los ntawm cov tshuaj rog raws li luv luv covalent tshuaj bonding tshwm sim los ntawm kev sib koom ntawm electrons.
Vim li cas physisorption tshwm sim ntawm qhov kub qis qis?
Raws li BET txoj kev xav, thawj txheej ntawm adsorbate tsim nyob rau saum npoo yog vim tsis muaj kev cuam tshuam ntawm cov roj thiab cov adsorbent. Yog li ntawd, physisorption tseem ceeb tsuas yog tshwm sim ntawm qhov kub thiab txias.
