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Transformations of thiophene compounds under catalytic cracking conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
46367 46438 2012 8 PDF Available
Title
Transformations of thiophene compounds under catalytic cracking conditions
Abstract

A method for in situ reduction of the sulfur content in catalytic cracking gasoline is reported. A comparison of thermal and catalytic transformations of sulfide and thiophene sulfur is presented. Main transformations of various organosulfur compounds are demonstrated. The effect of [H]-donor activity of hydrocarbons on conversion of thiophene sulfur into hydrogen sulfide is revealed. The impact of acid–base properties of the additives to the cracking catalysts on sulfur content reduction in the liquid products is examined in detail (TPD-NH3, 27Al NMR, CO2 adsorption). The choice of optimal qualitative composition of a modifying additive for reducing the sulfur content in catalytic cracking gasoline is substantiated.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Reduction of the sulfur content in catalytic cracking gasoline. ► Transformations of various organosulfur compounds in catalytic cracking conditions. ► Different hydrocarbons as hydrogen donors. ► Impact of acid–base properties of the additives to the cracking catalysts on sulfur content reduction.

Keywords
Organosulfur compounds; Thiophene; Catalytic cracking; Hydrogen transfer; Acid–base properties; TPD-NH3; 27Al NMR; CO2 adsorption
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 117–118, 18 May 2012, Pages 177–184
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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Price after discount Only $4.95
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Full-text PDF Download
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