In:
IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA, Ivanovo State University of Chemistry and Technology, Vol. 61, No. 9-10 ( 2018-10-22), p. 64-69
Abstract:
It is known that binary alloys of aluminum and metals of the iron group (cobalt, nickel) after their activation with the liquid eutectic gallium-indium by the removal of “passivating” oxide layers sharply increase the reactivity with respect to organochlorines. Corresponding reactions lead to the formation of metal – alumo - chloride complexes as inorganic products, which are active in many practically important catalytic reactions of liquid-phase conversion of hydrocarbons such as: alkylation, isomerization, oligomerization. This approach which was previously developed by the authors for the polycrystalline aluminum, is of interest in metal-complex catalysis since the formation of catalytic alumo-chloride and/or metal-alumo-chloride complexes can be carried out directly in the reaction medium, i.e. in situ. In this work, the local composition, structure and morphology of surface layers of aluminum-cobalt and aluminum-nickel alloys activated with liquid gallium-indium eutectic were studied using the methods of scanning electron microscopy and X-ray energy-dispersive spectrometry to determine the physicochemical regularities of the dynamics of their interaction with tert-butyl chloride at room temperatures. The formation of metal chloride complexes in the interphase area “activated alloy - tert-butyl chloride” was studied by ATR-FT-IR method in situ. The results obtained indicate that mono- and bi- nuclear alumo-chloride anions stabilized by cobalt and nickel cations are formed during the interaction. It is assumed that the ionic complex pairs formed are the active centers in liquid-phase reactions of hydrocarbons transformation at low temperatures. These structures are responsible for significantly change in the selectivity of catalytic processes compared to aluminum chloride catalyst. For citation: Arbuzov A.B., Drozdov V.A., Shlyapin D.A., Lavrenov A.V. Interaction of aluminum-cobalt and aluminum-nickel alloys activated by liquid gallium-indium eutectic with tert-butyl chloride for formation of catalytic metal - alumo-chloride complexes. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 9-10. P. 64-69
Type of Medium:
Online Resource
ISSN:
2500-3070
,
0579-2991
DOI:
10.6060/ivkkt20186109-10.5862a
Language:
Unknown
Publisher:
Ivanovo State University of Chemistry and Technology
Publication Date:
2018
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