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THE equation first proposed by Roginsky and Zeldovich [1] but now generally known as the Elovich equation has been extensively applied to chemisorption data [2,3]. The equation is d_q / d_t = ae^-aq where q = amount of gas chemisorbed at time t and a and alpha are constants. source: http://www.nature.com/nature/journal/v216/n5121/abs/2161204a0.html [1] # Roginsky, S. Z. , and Zeldovich, J. , Acta Physicochim. USSR, 1, 554 (1934). [2] # Low, M. J. D. , Chem. Rev., 60, 267 (1960). | Article | ISI | ChemPort | [3] # Taylor, G. A. , and Thon, N. , J. Amer. Chem. Soc., 74, 4169 (1952).
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <apply> <eq/> <apply> <divide/> <ci> <msub> <mi>d</mi> <mi>q</mi> </msub> </ci> <ci> <msub> <mi>d</mi> <mi>t</mi> </msub> </ci> </apply> <apply> <times/> <ci>a</ci> <apply> <exp/> <apply> <minus/> <apply> <times/> <ci>a</ci> <ci>q</ci> </apply> </apply> </apply> </apply> </apply> </math>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <mrow> <mfrac> <msub> <mi>d</mi> <mi>q</mi> </msub> <msub> <mi>d</mi> <mi>t</mi> </msub> </mfrac> <mo>=</mo> <mrow> <mi>a</mi> <mo>⁢</mo> <msup> <mi>e</mi> <mrow> <mo>-</mo> <mrow> <mi>a</mi> <mo>⁢</mo> <mi>q</mi> </mrow> </mrow> </msup> </mrow> </mrow> </math>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <semantics> <mrow> <mfrac> <msub> <mi>d</mi> <mi>q</mi> </msub> <msub> <mi>d</mi> <mi>t</mi> </msub> </mfrac> <mo>=</mo> <mi>a</mi> <msup> <mi>e</mi> <mrow> <mo>-</mo> <mi>a</mi> <mi>q</mi> </mrow> </msup> </mrow> <annotation encoding="SnuggleTeX">\[ \frac {d_q} {d_t} = ae^{-aq} \]</annotation> </semantics> </math>