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Gas treatment device comprising SMSI material and methods for making and using the same

  • US 6,774,080 B2
  • Filed: 11/25/2002
  • Issued: 08/10/2004
  • Est. Priority Date: 11/25/2002
  • Status: Expired due to Term
First Claim
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1. A gas treatment device, comprising:

  • a substrate disposed within a shell, the substrate comprising a catalyst composition comprising a support, a catalyst, and a sufficient amount of SMSI material such that, upon exposure to a gas stream at a gas treatment device operating temperature, less than or equal to about 35 wt % of hydrocarbons in the gas stream are burned.

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