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Benzene reduction in gasoline by alkylation with olefins: Effect of the experimental conditions on the product selectivity

Paper ID Volume ID Publish Year Pages File Format Full-Text
41943 45905 2010 7 PDF Available
Title
Benzene reduction in gasoline by alkylation with olefins: Effect of the experimental conditions on the product selectivity
Abstract

The production of a more environmentally friendly gasoline by removing substantial portions of benzene by alkylation with propylene was studied. One step experiments were performed with a real feedstock (20 wt% benzene) varying temperatures (120, 180, 220 and 320 °C) and benzene/propylene molar ratios (1, 2, 3, 5 and 7) in a batch system using Beta zeolite as catalyst. The highest benzene content reduction (52%) was achieved at 220 °C and B/P of 1, although the preferred i-propylbenzene production was attached to high molecular weight poly-alkylated by-products and olefin oligomers, which can trigger catalyst deactivation. The effect of this procedure on the reformation gasoline and on the final gasoline blendstock is also presented.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (119 K)Download as PowerPoint slideResearch highlights▶ Formation of by-products could not be avoided by changing experimental conditions. ▶ A maximum benzene conversion was obtained at 220 °C (1/1 B/P). ▶ Formation of by-products decreased at lower temperatures. ▶ Benzene conversion decreased drastically at higher B/P molar ratios. ▶ IPB selectivity increased slightly at higher B/P molar ratios.

Keywords
Gasoline; Benzene; Alkylation; Propylene; i-Propylbenzene; Beta zeolite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 384, Issues 1–2, 20 August 2010, Pages 115–121
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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