IR transmission cell for in-situ studies of reactions in solid and liquid phase in heterogeneous catalyst systems

Oystein Bache; Martin Ystenes

doi:10.1117/12.56334

1 March 1992 IR transmission cell for in-situ studies of reactions in solid and liquid phase in heterogeneous catalyst systems

Oystein Bache, Martin Ystenes

Author Affiliations +

Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56334
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany

Abstract

An in situ IR transmission cell for the study of different reactions in Ziegler-Natta catalyst systems is developed. The experimental setup makes it possible to: (1) simultaneously and separately study the reactions in the liquid and the solid phase of the heterogeneous system, (2) add controlled amounts of solute species and in situ follow the reaction, and (3) flush the solid phase with solvent to remove solute species. At present, reactions between AlEt3, ethyl benzoate (EB) and MgCl2 support are under study. The results show that free EB is present at an AlEt3/EB molar ratio of 3.3, indicating an unbalanced bridged adduct or an equilibrium situation. The results indicate (1) that no reduction of EB takes place at high AlEt3/EB molar ratio (max equals 14) at room temperature, and (2) that AlEt3 complexates with the support (internal donor (EB) and MgCl2) and forms a well defined compound. The results also indicate that the cell and experimental setup are well suited for these type of studies.

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Oystein Bache and Martin Ystenes "IR transmission cell for in-situ studies of reactions in solid and liquid phase in heterogeneous catalyst systems", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56334

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