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Title: Achieving Atomic Dispersion of Highly Loaded Transition Metals in Small‐Pore Zeolite SSZ‐13: High‐Capacity and High‐Efficiency Low‐Temperature CO and Passive NO x Adsorbers

Journal Article · · Angewandte Chemie (International Edition)
ORCiD logo [1];  [2];  [1];  [3];  [4];  [4];  [4];  [5];  [5];  [5];  [2];  [1]; ORCiD logo [1]
  1. Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
  2. Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA, Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99163 USA
  3. Chemistry Department Brookhaven National Laboratory Uptown NY 11973 USA
  4. Department of Chemical and Petroleum Engineering and Center for Environmentally Beneficial Catalysis University of Kansas Lawrence KS 66045 USA
  5. Faculty of Chemistry and Pharmacy University of Sofia 1126 Sofia Bulgaria

Abstract The majority of harmful atmospheric CO and NO x emissions are from vehicle exhausts. Although there has been success addressing NO x emissions at temperatures above 250 °C with selective catalytic reduction technology, emissions during vehicle cold start (when the temperature is below 150 °C), are a major challenge. Herein, we show we can completely eliminate both CO and NO x emissions simultaneously under realistic exhaust flow, using a highly loaded (2 wt %) atomically dispersed palladium in the extra‐framework positions of the small‐pore chabazite material as a CO and passive NO x adsorber. Until now, atomically dispersed highly loaded (>0.3 wt %) transition‐metal/SSZ‐13 materials have not been known. We devised a general, simple, and scalable route to prepare such materials for Pt II and Pd II . Through spectroscopy and materials testing we show that both CO and NO x can be simultaneously completely abated with 100 % efficiency by the formation of mixed carbonyl‐nitrosyl palladium complex in chabazite micropore.

Sponsoring Organization:
USDOE
OSTI ID:
1481809
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Vol. 57 Journal Issue: 51; ISSN 1433-7851
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 113 works
Citation information provided by
Web of Science

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