Title:
HONEYCOMB CATALYST
Document Type and Number:
Japanese Patent JP2016073958
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a honeycomb catalyst that is excellent in NOx purification capability as well as that can reduce the water absorption displacement magnitude and suppress the occurrence of cracks.SOLUTION: Provided is a honeycomb catalyst including a honeycomb unit having a plurality of through-pores divided by a partition wall and arranged along a longitudinal direction, in which the honeycomb unit comprises a zeolite and an inorganic binder, and the zeolite satisfies all of the following conditions (A) to (D): (A) the composition ratio SiO/AlOis less than 15 and a CHA structure is provided; (B) 3.5 to 6.0 mass% of Cu is supported with respect to zeolite; (C) the average particle size is 0.05 to 1 μm; and (D) 150 to 350 g/L is contained for the entire honeycomb unit.SELECTED DRAWING: Figure 1
Inventors:
MIYASHITA TOSHIYUKI
Application Number:
JP2014207848A
Publication Date:
May 12, 2016
Filing Date:
October 09, 2014
Export Citation:
Assignee:
IBIDEN CO LTD
International Classes:
B01J35/04; B01D53/94; B01J29/76; F01N3/10; F01N3/28
Domestic Patent References:
| JP2013032268A | 2013-02-14 | |||
| JP2014122142A | 2014-07-03 | |||
| JP2011056328A | 2011-03-24 | |||
| JP2014515723A | 2014-07-03 | |||
| JP5740040B1 | 2015-06-24 |
Foreign References:
| WO2009141881A1 | 2009-11-26 |
Other References:
JA HUN KWAK ET AL.: "Effects of hydrothermal aging on NH3-SCR reaction over Cu/zeolites", JOURNAL OF CATALYSIS, vol. 287, JPN6015044975, March 2012 (2012-03-01), pages 203 - 209, XP055426506, ISSN: 0003932356, DOI: 10.1016/j.jcat.2011.12.025
KORHONEN SATU T. ET AL.: "ISOLATED CU2+ IONS: ACTIVE SITES FOR SELECTIVE CATALYTIC REDUCTION OF NO", CHEMICAL COMMUNICATIONS, vol. 47, JPN5014001905, 2010, pages 800 - 802, ISSN: 0004050620
FICKEL DUSTIN W. ET AL.: "COPPER COORDINATION IN CU-SSZ-13 AND CU-SSZ-16 INVESTIGATED BY VARIABLE-TEMPERATURE XRD", JOURNAL OF PHYSICAL CHEMISTRY C, vol. 114, no. 3, JPN5014001906, 2010, pages 1633 - 1640, XP002670366, ISSN: 0004050621, DOI: 10.1021/JP9105025
KORHONEN SATU T. ET AL.: "ISOLATED CU2+ IONS: ACTIVE SITES FOR SELECTIVE CATALYTIC REDUCTION OF NO", CHEMICAL COMMUNICATIONS, vol. 47, JPN5014001905, 2010, pages 800 - 802, ISSN: 0004050620
FICKEL DUSTIN W. ET AL.: "COPPER COORDINATION IN CU-SSZ-13 AND CU-SSZ-16 INVESTIGATED BY VARIABLE-TEMPERATURE XRD", JOURNAL OF PHYSICAL CHEMISTRY C, vol. 114, no. 3, JPN5014001906, 2010, pages 1633 - 1640, XP002670366, ISSN: 0004050621, DOI: 10.1021/JP9105025
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu