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A study of sulfur dioxide poisoning ...

Luo, Tian.

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A study of sulfur dioxide poisoning on ceria based three way catalysts.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A study of sulfur dioxide poisoning on ceria based three way catalysts./
Author:	Luo, Tian.
Description:	145 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-06, Section: B, page: 3039.
Contained By:	Dissertation Abstracts International65-06B.
Subject:	Engineering, Chemical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3138047
ISBN:	0496852175

A study of sulfur dioxide poisoning on ceria based three way catalysts.
Luo, Tian.

A study of sulfur dioxide poisoning on ceria based three way catalysts. - 145 p.

Source: Dissertation Abstracts International, Volume: 65-06, Section: B, page: 3039.

Thesis (Ph.D.)--University of Pennsylvania, 2004.

This thesis work aims to better understand the various aspects in automotive emission control catalysis. First part focuses on the sulfur poisoning issues in ceria based three-way catalysts employed in gasoline engines. Second part concentrates on the efficiency of NOx storage phase in BaO-Al2O 3 catalysts for the lean burn diesel engines.

ISBN: 0496852175Subjects--Topical Terms:

1018531
Engineering, Chemical.

A study of sulfur dioxide poisoning on ceria based three way catalysts.
LDR:02205nmm 2200301 4500 001 1819147
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020 $a 0496852175
035 $a (UnM)AAI3138047
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100 1 $a Luo, Tian. $3 1908444
245 1 2 $a A study of sulfur dioxide poisoning on ceria based three way catalysts.
300 $a 145 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-06, Section: B, page: 3039.
500 $a Supervisor: Raymond J. Gorte.
502 $a Thesis (Ph.D.)--University of Pennsylvania, 2004.
520 $a This thesis work aims to better understand the various aspects in automotive emission control catalysis. First part focuses on the sulfur poisoning issues in ceria based three-way catalysts employed in gasoline engines. Second part concentrates on the efficiency of NOx storage phase in BaO-Al2O 3 catalysts for the lean burn diesel engines.
520 $a Species formed upon SO2 poisoning on ceria and zirconia modified ceria were characterized theoretically and experimentally under different poisoning conditions. Surface and bulk Ce2(SO4) 3, Ce(SO4)2, Ce2O2S could form depending on poisoning temperature and SO2/O2 fugacity. Their influence on the Oxygen Storage Capacity (OSC) of the catalysts and the related deactivation mechanism for Water Gas Shift (WGS) reaction have also been investigated thoroughly in a simulated pulse reactor. Basically, the redox (reduce-oxidize) cycle of the TWC was blocked by the formation of Ce2O2S under reducing condition, which is hard to be reoxidized by either H2O or CO2.
520 $a Additionally, the influence of various BaO*Al2O3 structures on the NOx trapping capacity was studied using XRD, TPD and FTIR techniques. Different than pure barium oxide, the BaAl2O4 shows interesting NO2 trapping properties by blocking the formation of carbonate in the catalysts.
590 $a School code: 0175.
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Engineering, Automotive. $3 1018477
690 $a 0542
690 $a 0540
710 2 0 $a University of Pennsylvania. $3 1017401
773 0 $t Dissertation Abstracts International $g 65-06B.
790 1 0 $a Gorte, Raymond J., $e advisor
790 $a 0175
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3138047