Abstract: This paper describes the results of studies of the physicochemical characteristics of cobalt catalysts and methods for modifying them with alumina. The elemental composition, the peculiarities of formation of the structural and phase composition of cobalt catalysts are studied. The influence of the carbonization process of cobalt catalysts at a temperature of 550 degrees C on the specific surface is determined. The increase in the specific surface in cobalt catalysts was studied to proceed uniformly, as the formation of large grains and accumulations of active components was not observed. According to the results of X-ray diffraction (XRD) analysis, the formation of aluminosilicate phases, cobalt oxide, and cobalt are detected. The surface of cobalt samples was investigated by scanning electron microscope (SEM). Electron microscopy revealed crystallites of cobalt particles with sizes of 300-400 nm. It is shown that in the course of modification with alumina, in cobalt catalysts active centers are formed that enhance their catalytic properties during the reaction of hydrogenation of acetylene to ethylene. It is found that cobalt catalysts exhibit catalytic activity in the acetylene hydrogenation reaction. On cobalt catalysts at a temperature of 160 degrees C at a conversion of 82%, the yield of ethylene is 64.1%.

Cite: Tanirbergenova S.K. , Tugelbaeva D.A. , Moldazhanova G.M. , Khairullin S.R.
Physical and Chemical Characteristics of Cobalt Catalysts in the Process of Hydrogenating Acetylene
Eurasian Chemico-Technological Journal. 2019. V.21. N4. P.341-346. DOI: 10.18321/ectj891 WOS Scopus РИНЦ AN OpenAlex

Files: Full text from publisher

Dates:

Submitted:	Jun 18, 2019
Accepted:	Oct 19, 2019
Published online:	Dec 18, 2019

Identifiers:

Web of science:	WOS:000505618100007
Scopus:	2-s2.0-85077721547
Elibrary:	43226477
Chemical Abstracts:	2020:2352372
OpenAlex:	W2997582823

Citing:

DB	Citing
Web of science	1
Scopus	2
Elibrary	2
OpenAlex	1

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