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Title: Selective catalytic reduction system and process for treating NOx emissions using a zinc or titanium promoted palladium-zirconium catalyst

Abstract

A process and system (18) for reducing NO.sub.x in a gas using hydrogen as a reducing agent is provided. The process comprises contacting the gas stream (29) with a catalyst system (38) comprising sulfated zirconia washcoat particles (41), palladium, a pre-sulfated zirconia binder (44), and a promoter (45) comprising at least one of titanium, zinc, or a mixture thereof. The presence of zinc or titanium increases the resistance of the catalyst system to a sulfur and water-containing gas stream.

Inventors:
 [1];  [2];  [2]
  1. Orlando, FL
  2. Columbus, OH
Publication Date:
Research Org.:
Siemens Energy, Inc. (Orlando, FL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1026840
Patent Number(s):
7,988,940
Application Number:
12/773,057
Assignee:
Siemens Energy, Inc. (Orlando, FL)
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Sobolevskiy, Anatoly, Rossin, Joseph A, and Knapke, Michael J. Selective catalytic reduction system and process for treating NOx emissions using a zinc or titanium promoted palladium-zirconium catalyst. United States: N. p., 2011. Web.
Sobolevskiy, Anatoly, Rossin, Joseph A, & Knapke, Michael J. Selective catalytic reduction system and process for treating NOx emissions using a zinc or titanium promoted palladium-zirconium catalyst. United States.
Sobolevskiy, Anatoly, Rossin, Joseph A, and Knapke, Michael J. Tue . "Selective catalytic reduction system and process for treating NOx emissions using a zinc or titanium promoted palladium-zirconium catalyst". United States. https://www.osti.gov/servlets/purl/1026840.
@article{osti_1026840,
title = {Selective catalytic reduction system and process for treating NOx emissions using a zinc or titanium promoted palladium-zirconium catalyst},
author = {Sobolevskiy, Anatoly and Rossin, Joseph A and Knapke, Michael J},
abstractNote = {A process and system (18) for reducing NO.sub.x in a gas using hydrogen as a reducing agent is provided. The process comprises contacting the gas stream (29) with a catalyst system (38) comprising sulfated zirconia washcoat particles (41), palladium, a pre-sulfated zirconia binder (44), and a promoter (45) comprising at least one of titanium, zinc, or a mixture thereof. The presence of zinc or titanium increases the resistance of the catalyst system to a sulfur and water-containing gas stream.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {8}
}

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Works referenced in this record:

An Investigation of the NO/H2/O2 (Lean De-NOx) Reaction on a Highly Active and Selective Pt/La0.7Sr0.2Ce0.1FeO3 Catalyst at Low Temperatures
journal, July 2002

  • Costa, C. N.; Savva, P. G.; Andronikou, C.
  • Journal of Catalysis, Vol. 209, Issue 2
  • DOI: 10.1006/jcat.2002.3645

Low temperature catalytic NOx–H2 reactions over Pt/TiO2-ZrO2 in an excess oxygen
journal, December 2001


The current state of research on automotive lean NOx catalysis
journal, September 1997


An investigation of the NO/H2/O2 reaction on noble-metal catalysts at low temperatures under lean-burn conditions
journal, November 1999


Low-temperature H2-SCR of NO on a novel Pt/MgO-CeO2 catalyst
journal, March 2007