2-methylpentane catalytic reactions on Pt(3%wt)-HNaβ-zeolite. Kinetic studies

1998 ◽  
Vol 95 (3) ◽  
pp. 536-560 ◽  
Author(s):  
S. Siffert ◽  
F. Garin
Keyword(s):  
Kinetic Studies ◽  
Catalytic Reactions

scholarly journals Revisiting the Role of Mass and Heat Transfer in Gas–Solid Catalytic Reactions

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1599
Author(s):  
Riccardo Tesser ◽  
Elio Santacesaria
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Kinetic Studies ◽  
Packed Bed ◽  
Catalytic Reactions ◽  
Catalytic Reactors ◽  
Tremendous Progress ◽  
Mass And Heat Transfer ◽  
Energy Balances

The tremendous progress in the computing power of modern computers has in the last 20 years favored the use of numerical methods for solving complex problems in the field of chemical kinetics and of reactor simulations considering also the effect of mass and heat transfer. Many classical textbooks dealing with the topic have, therefore, become quite obsolete. The present work is a review of the role that heat and mass transfer have in the kinetic studies of gas–solid catalytic reactions. The scope was to collect in a relatively short document the necessary knowledge for a correct simulation of gas–solid catalytic reactors. The first part of the review deals with the most reliable approach to the description of the heat and mass transfer outside and inside a single catalytic particle. Some different examples of calculations allow for an easier understanding of the described methods. The second part of the review is related to the heat and mass transfer in packed bed reactors, considering the macroscopic gradients that derive from the solution of mass and energy balances on the whole reactor. Moreover, in this second part, some examples of calculations, applied to chemical reactions of industrial interest, are reported for a better understanding of the systems studied.

Kinetic studies on cyclopalladation in palladium(II) complexes containing an indole moiety

2014 ◽  
Vol 86 (2) ◽  
pp. 151-161 ◽  
Author(s):  
Satoshi Iwatsuki ◽  
Takuya Suzuki ◽  
Syogo Tanooka ◽  
Tatsuo Yajima ◽  
Yuichi Shimazaki
Keyword(s):  
Bond Formation ◽  
Kinetic Studies ◽  
Catalytic Reactions ◽  
Biological Molecules ◽  
Side Chain ◽  
Formation Mechanisms ◽  
Indole Derivatives ◽  
Reaction Intermediates ◽  
Pd Catalysts ◽  
Amino Acid Tryptophan

Abstract Various Pd–C complexes have been developed to date, affording deep insights into the reaction intermediates in useful catalytic reactions in organic syntheses. Cyclopalladation is one of the most famous Pd–C bond formation reactions to generate the palladacycles. Indole is an electron-rich aromatic ring involved in the side chain of an essential amino acid, tryptophan (Trp), and Trp and its derivatives are important in biological systems, such as electron transfer in protein, cofactors for conversion of biological molecules and so on. Pd catalysts are also useful for syntheses of such indole derivatives, and the mechanisms are considered to be through the Pd–C intermediates. However, the detailed properties and formation mechanisms of Pd–indole species are still unclear. With these points in mind, we focus on Pd(II)–indole-C2 carbon bond formations using various Pd(II) complexes having an indole moiety, especially on the recent studies on the kinetic analyses for these cyclopalladation reactions and their detailed mechanisms.

Recent Approaches in Mechanistic and Kinetic Studies of Catalytic Reactions Using SSITKA Technique

ACS Catalysis ◽  
2014 ◽  
Vol 4 (12) ◽  
pp. 4527-4547 ◽  
Author(s):  
Cristian Ledesma ◽  
Jia Yang ◽  
De Chen ◽  
Anders Holmen
Keyword(s):  
Kinetic Studies ◽  
Catalytic Reactions

A versatile bench-scale unit for kinetic studies of catalytic reactions

1988 ◽  
Vol 27 (4) ◽  
pp. 576-580 ◽  
Author(s):  
Egbert Lox ◽  
Frank Coenen ◽  
Rene Vermeulen ◽  
Gilbert F. Froment
Keyword(s):  
Kinetic Studies ◽  
Catalytic Reactions ◽  
Bench Scale ◽  
Scale Unit

Design and testing of an operando-Raman annular reactor for kinetic studies in heterogeneous catalysis

2017 ◽  
Vol 2 (6) ◽  
pp. 908-918
Author(s):  
Ali Maghsoumi ◽  
Andrea Ravanelli ◽  
Federico Consonni ◽  
Fabio Nanni ◽  
Andrea Lucotti ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Heterogeneous Catalysis ◽  
Kinetic Analysis ◽  
Kinetic Studies ◽  
Catalytic Reactions ◽  
Annular Reactor ◽  
Heterogeneous Catalytic ◽  
Experimental Tool ◽  
Design And Testing

A novel experimental tool that integrates in situ Raman spectroscopy and an annular reactor for the operando-Raman kinetic analysis of heterogeneous catalytic reactions.

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