Title:
COPPER-SUPPORTED ZEOLITE AND EXHAUST-GAS PURIFICATION TREATMENT CATALYST CONTAINING SAID ZEOLITE
Document Type and Number:
WIPO Patent Application WO/2017/002745
Kind Code:
A1
Abstract:
This invention provides a copper-supported SAPO which has not only excellent high-temperature steam durability of a silicoaluminophosphate zeolite (SAPO) but also excellent low-temperature steam durability. Provided is a copper-supported zeolite in which copper is supported by a zeolite, the zeolite containing in the skeleton structure thereof at least a silicon atom, a phosphorus atom, and an aluminium atom, wherein the copper-supported zeolite satisfies (1)-(3) below. (1) The copper-supported amount (in terms of copper atoms) is 1.5-3.5 wt%. (2) The UV-Vis-NIR absorption intensity ratio obtained by the following formula (I) is less than 0.35: Intensity(22000 cm-1)/Intensity(12500 cm-1) ... (I). (3) The silicon atom content satisfies the following formula (II): 0.07≤x≤0.11 ... (II), wherein x is a molar ratio of the silicon atoms with respect to the total amount of the silicon atoms, the aluminium atoms, and the phosphorus atoms in the zeolite skeleton structure.
Inventors:
HOTTA YUUSUKE (JP)
TAKEWAKI TAKAHIKO (JP)
MATSUO TAKESHI (JP)
KIYONO KENICHI (JP)
TAKEWAKI TAKAHIKO (JP)
MATSUO TAKESHI (JP)
KIYONO KENICHI (JP)
Application Number:
PCT/JP2016/068959
Publication Date:
January 05, 2017
Filing Date:
June 27, 2016
Export Citation:
Assignee:
MITSUBISHI PLASTICS INC (JP)
International Classes:
C01B39/54; B01D53/94; F01N3/10
Domestic Patent References:
| WO2015146482A1 | 2015-10-01 |
Foreign References:
| JP2013514257A | 2013-04-25 | |||
| JP2015044720A | 2015-03-12 |
Other References:
See also references of EP 3318533A4
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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