Qhov sib txawv tseem ceeb ntawm chemisorption thiab physisorption yog tias chemisorption yog ib hom adsorption uas cov tshuaj adsorbed yog tuav los ntawm cov tshuaj bonds whereas physisorption yog ib hom adsorption uas cov tshuaj adsorbed yog tuav los ntawm intermolecular rog.
Chemisorption thiab physisorption feem ntau yog cov ntsiab lus tseem ceeb ntawm cov tshuaj uas peb tuaj yeem siv los piav qhia txog cov txheej txheem adsorption ntawm cov khoom siv rau saum npoo. Chemisorption yog adsorption los ntawm tshuaj txhais tau tias thaum physisorption yog adsorption los ntawm lub cev txhais tau tias.
Chemisorption yog dab tsi?
Chemisorption yog cov txheej txheem uas adsorption ntawm ib yam khoom rau saum npoo yog tsav los ntawm cov tshuaj. Ntawm no, cov adsorbate txuas nrog rau saum npoo ntawm cov tshuaj sib txuas. Yog li ntawd, cov txheej txheem no cuam tshuam cov tshuaj tiv thaiv ntawm adsorbate thiab saum npoo. Ntawm no, chemical bonds tuaj yeem tawg thiab tsim tib lub sijhawm. Ntxiv mus, cov tshuaj lom neeg uas tsim cov adsorbate thiab nto tau hloov pauv vim qhov kev sib tsoo thiab tsim.
Daim duab 01: Peb Cov Kauj Ruam rau Chemisorption
Ib qho piv txwv yog kev xeb, uas yog qhov tshwm sim macroscopic peb tuaj yeem saib ntawm qhov muag liab qab. Tsis tas li ntawd, hom kev sib cog lus uas tuaj yeem tsim ntawm adsorbate thiab nto muaj xws li covalent bonds, ionic bonds thiab hydrogen bonds.
Physorption yog dab tsi?
Physisorption yog cov txheej txheem uas adsorption ntawm ib yam khoom rau saum npoo yog tsav los ntawm lub cev txhais tau tias. Qhov ntawd txhais tau tias; tsis muaj tshuaj lom neeg tsim, thiab cov txheej txheem no cuam tshuam nrog kev sib cuam tshuam xws li Van der Waal rog. Cov adsorbate thiab qhov chaw muaj nyob tsis zoo. Yog li ntawd, tsis muaj kev koom tes ntawm cov qauv hluav taws xob ntawm atoms lossis molecules.
Ib qho piv txwv yog Van der Waals rog ntawm qhov chaw thiab ko taw cov plaub hau ntawm geckos, uas pab lawv nce toj ntsug.
Qhov txawv ntawm Chemisorption thiab Physisorption yog dab tsi?
Qhov sib txawv tseem ceeb ntawm chemisorption thiab physisorption yog tias nyob rau hauv chemisorption, tshuaj bonds tuav cov khoom adsorbed whereas, nyob rau hauv physisorption, intermolecular rog tuav cov khoom adsorbed. Ntxiv mus, chemisorption tuaj yeem tsim hydrogen bonds, covalent bonds thiab ionic bonds tab sis physisorption forms Van der Waal sib cuam tshuam nkaus xwb. Yog li, peb tuaj yeem xav txog qhov no kuj yog qhov sib txawv ntawm chemisorption thiab physisorption. Lub zog khi rau chemisorption yog li ntawm 1-10 eV thaum nyob rau hauv physisorption nws yog li 10-100 meV.
Hauv qab infographic qhia ntau qhov sib piv txog qhov sib txawv ntawm chemisorption thiab physisorption.
Summary – Chemisorption vs Physisorption
Qhov sib txawv tseem ceeb ntawm chemisorption thiab physisorption yog tias chemisorption yog ib hom adsorption nyob rau hauv cov tshuaj bonds tuav cov khoom adsorbed, whereas physisorption yog ib hom adsorption uas intermolecular rog tuav cov khoom adsorbed.
