吸附动力学origin拟合

Method•Adsorptionkinetics022.1Adsorptionkinetics01CONCEPTS:•Adsorptionkinetics:Adsorptionkineticsisabranchsubjectthatstudiesadsorption,desorptionspeedandvariousinfluencingfactors,whichisatime-dependentprocess.Itisnecessarytoknowtherateofadsorptionfordesignandevaluationofadsorbent.(化学化工大辞典；SaeidAzizian，2004）2.1Adsorptionkinetics02Adsorptionkineticsequation:•(1)Thepseudo-firstkinetic:•𝑑𝑞𝑡𝑑𝑡=𝑘1(𝑞𝑒−𝑞𝑡）𝑙𝑛𝑞𝑒−𝑞𝑡=𝑙𝑛𝑞𝑒−𝑘1𝑡•(2)Thepseudo-secondkinetic:•𝑑𝑞𝑡𝑑𝑡=𝑘2(𝑞𝑒−𝑞𝑡)2𝑡𝑞𝑡=1𝑘2𝑞𝑒2+𝑡𝑞𝑒•(3)Intra-particlediffusionmodel:•𝑞𝑡=𝑘𝑝𝑡0.5𝑞𝑡=𝑘𝑛𝑡0.5+𝐶2.1Adsorptionkinetics03Fittingadsorptionkineticsequation:Whatelsedoyouneed?Howtofittheequation?Experimentaldata1.Designexperimentsaccordingtoliteraturewhatyouread.2.Atthebeginningofreacting,thesampletimeshouldbemoreintensivethanthelater.3.SelectoneindicatorasaresponseOrigin1.Inputexperimentaldataanddrawscatterplot.2.Analysis→fitting→nonlinearcurvefit→settings(category)→Newcategory(name)→Newfunction（inputtheobjectivefunction)→codebuilder→compile(done)→returntodialog→save→ok→settings→name→parameters→value→fit3.OutputresultsincludingparametersandR22.1Adsorptionkinetics03Fittingadsorptionkineticsequation:ExperimentaldataScatterplot2.1Adsorptionkinetics03Fittingadsorptionkineticsequation:2.1Adsorptionkinetics03Fittingadsorptionkineticsequation: