✦ LIBER ✦

First-order kinetics in fractal catalysts: Renormalization analysis of the effectiveness factor

✍ Scribed by M. Giona; W.A. Schwalm; A. Adrover; M.K. Schwalm

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 718 KB
Volume: 51
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(96)00084-x

No coin nor oath required. For personal study only.

✦ Synopsis

By applying Input/Output renormalization and the Green function formalism to the discrete formulation of transport phenomena on graphs, we develop exact recursion for the effectiveness factor tor first-order reaction in a fractal porous catalyst. The scaling of the effectiveness factor vs the Thiele modulus is obtained in the case of finitely ramified fractals and discussed in detail. Crossover phenomena in hierarchical and heterogeneous fractal pore-network models and renormMization recursion for integral quantities are also analyzed.

(1)

📜 SIMILAR VOLUMES

Effective diffusion coefficients for flu

Effective diffusion coefficients for fluid species reacting with first order kinetics in packed bed reactors and discussion on evaluation of catalyst effectiveness factors

✍ N. Wakao; S. Kaguei; H. Nagai 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 404 KB

The fluld effective dlffuslon coefficients under first-order-reactton condltlon were calculated at zero flow rates and shown m chart as a function of flmd and mtrapartlcle dlffuslvltles and Thlele modulus Theoretical backeround was elven to the assumntton of concentnc mtraparticle concentration empl

Methods for kinetic analysis of simultan

Methods for kinetic analysis of simultaneous, first-order reactions in waters: The kinetic model and methods for data analysis

✍ Yanjia Lu; C.L. Chakrabarti; M.H. Back; D.C. Grégoire; W.H. Schroeder; A.G. Szab 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 772 KB

The graphical method and the iterative method for analysing kinetic data for metal speciation in waters are described. The graphical method involves successive subtractions of one component from the total concentration of the metal remaining, beginning with the slowest component. The iterative metho

Hydrocarbon vapor incineration kinetics.

Hydrocarbon vapor incineration kinetics. The authors propose a first-order model for predicting the kinetics in afterburners—a key factor in emission control

✍ Cooper, C. D. ;Alley, F. C. ;Overcamp, T. J. 📂 Article 📅 1982 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 517 KB

The effect of a limiting non-key reactan

The effect of a limiting non-key reactant on pseudo first-order reactions in porous catalysts

✍ F. Gioia; G. Greco Jr.; L.G. Gibilaro 📂 Article 📅 1970 🏛 Elsevier Science 🌐 English ⚖ 772 KB

Ah&act-Effectiveness factor correlations are derived for the kinetic model describing a pseudo firstorder mechanism up to the point of penetration in the catalyst pellet at which the non-key reactant is completely consumed. The pseudo first-order approximation is shown to be satisfactory for the rat

Theoretical and Experimental Considerati

Theoretical and Experimental Considerations of the Pseudo-First-Order Approximation in Conventional Kinetic Analysis of IAsys Biosensor Data

✍ Damien R. Hall; Nick N. Gorgani; Joseph G. Altin; Donald J. Winzor 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 207 KB

Kinetic analysis of an extended single-p

Kinetic analysis of an extended single-path sequence of first-order reactions. The reaction of mesitonitrile in sulfuric acid

✍ Ja′far Al-ka′bi; Peter H. Gore; Esmat F. Saad; David N. Waters; Gerald F. Moxon 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 English ⚖ 277 KB

The system of a sequence of five first-order reactions, A -B -C -D -E -F , has been analyzed kinetically. An actual example is proposed in the reaction of mesitonitrile in 89.8% (w/w) sulfuric acid a t 98.3OC. The analysis provides estimates of concentration ratios as functions of time, and the prog