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Catalysts based on amorphous aluminosilicates for selective hydrotreating of FCC gasoline to produce Euro-5 gasoline with minimum octane number loss

Paper ID Volume ID Publish Year Pages File Format Full-Text
53515 46973 2016 12 PDF Available
Title
Catalysts based on amorphous aluminosilicates for selective hydrotreating of FCC gasoline to produce Euro-5 gasoline with minimum octane number loss
Abstract

•Co-Mo catalyst for hydrotreating of full FCC gasoline fraction is proposed.•The catalyst provides the production of gasoline with S < 10 ppm and ΔRON < 1.5.•The catalyst is characterized by ASA support with Si/(Si + Al) = 0.2.•The catalyst has high activity in HDS and isomerisation of terminal olefins.

The method for preparation of Co–Mo catalysts for one-stage hydrotreating of full FCC gasoline fraction is proposed. The main characteristic of the catalysts is the use of the supports based on amorphous aluminosilicate. Catalysts were characterized with nitrogen adsorption-desorption, HRTEM and XPS methods. It was shown that all catalysts containing aluminosilicates have similar textural characteristics and contain Co-Mo-S phase with similar morphology. The IR CO data indicate that sulfided catalysts contain different acid sites with the predominance of weak Lewis acid sites and Brønsted acid sites with the strength of 1190 kJ/mol. Catalysts were tested in hydrotreating of model fuel and full FCC gasoline fraction. It was shown that presence of amorphous aluminosilicates in catalysts results in the increase of catalytic activity in reactions of olefin isomerisation. Significant contribution of olefin isomerization reactions results in the prevention of octane number loss while high activity hydrodesulfurisation maintains.

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Keywords
FCC gasoline; Hydrotreating catalyst; Selective hydrodesulfurisation; Aluminosilicate; Octane number
First Page Preview
Catalysts based on amorphous aluminosilicates for selective hydrotreating of FCC gasoline to produce Euro-5 gasoline with minimum octane number loss
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 271, 1 August 2016, Pages 4–15
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis