Effect of Chemical Composition of Zeolite Catalysts on Their Catalytic Properties in Isobutane Alkylation with Butylenes

• Published in: Petroleum chemistry Vol. 59; no. 7; pp. 706 - 710
• Main Authors: Gerzeliev, I. M., Temnikova, V. A., Deniskin, O. V., Baskhanova, M. N., Khusaimova, D. O., Maksimov, A. L.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2019; Springer; Springer Nature B.V
• Subjects: Alkylation; Ammonia; Butane; Butylene; Catalysis; Catalysts; Chemical composition; Chemistry; Chemistry and Materials Science; Composition effects; Industrial Chemistry/Chemical Engineering; Isooctane; Lanthanum oxides; Lime; Organic chemistry; Selectivity; Zeolites; heterogeneous catalyst; butylenes; isobutane; acidity; zeolite NaX; ion exchange; alkylation; high-octane component; alkylbenzene
• ISSN: 0965-5441; 1555-6239
• DOI: 10.1134/S0965544119070053

The effect of the chemical composition of zeolite catalysts in the CaLaHX form on their catalytic properties in isobutane alkylation with butylenes have been studied. Optimum concentrations of metal oxides providing a butylene conversion of 97–100 wt %, an alkylate yield that is close to the theoretical value (95–100 wt %), and a trimethylpentane (TMP) selectivity at a level of 73 wt % have been determined (wt %: Na
2
O, 0.5; CaO, 0.6; La
2
O
3
, 18.3). It has been found that there is a fair good correlation between the optimum chemical composition of the catalyst samples and their acidity determined by temperature-programmed desorption of ammonia.