Cooperative and competitive adsorption mechanism of NO2, NO, and H2O on H-type mordenite

Z. M. Wang; T. Arai; M. Kumagai

doi:10.1021/ie000895o

Cooperative and competitive adsorption mechanism of NO₂, NO, and H₂O on H-type mordenite

Z. M. Wang, T. Arai, M. Kumagai

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

To elucidate the interaction mechanism of NO_x (NO₂ and NO) and H₂O on the surface of H-type mordenite (HM), the dynamic adsorption properties of NO₂ + H₂O + O₂ and NO + H₂O + O₂ mixtures were examined and the surface reaction of NO_x and H₂O was studied by an in-situ FT-IR spectroscopic method. It was found that NO₂ can be dissociatively adsorbed on two kinds of adsorption sites on HM to form nitric acid like species by interacting with Brønsted acid sites, whereas NO + O₂ + H₂O adsorption is a competitive process of NO oxidation and H₂O adsorption without leading to formation of nitric acid like species. The difference between NO₂ adsorption sites and NO oxidation sites gives rise to the difference in their breakthrough properties. Adsorption/catalytic reaction models are proposed based on column adsorption and FT-IR results.

Original language	English
Pages (from-to)	1864-1871
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	40
Issue number	8
DOIs	https://doi.org/10.1021/ie000895o
Publication status	Published - 2001 Apr 18
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

Access to Document

10.1021/ie000895o

Fingerprint Dive into the research topics of 'Cooperative and competitive adsorption mechanism of NO<sub>2</sub>, NO, and H<sub>2</sub>O on H-type mordenite'. Together they form a unique fingerprint.

Cite this

@article{33b9c3d418844183af7a02f815ff2daa,

title = "Cooperative and competitive adsorption mechanism of NO2, NO, and H2O on H-type mordenite",

abstract = "To elucidate the interaction mechanism of NOx (NO2 and NO) and H2O on the surface of H-type mordenite (HM), the dynamic adsorption properties of NO2 + H2O + O2 and NO + H2O + O2 mixtures were examined and the surface reaction of NOx and H2O was studied by an in-situ FT-IR spectroscopic method. It was found that NO2 can be dissociatively adsorbed on two kinds of adsorption sites on HM to form nitric acid like species by interacting with Br{\o}nsted acid sites, whereas NO + O2 + H2O adsorption is a competitive process of NO oxidation and H2O adsorption without leading to formation of nitric acid like species. The difference between NO2 adsorption sites and NO oxidation sites gives rise to the difference in their breakthrough properties. Adsorption/catalytic reaction models are proposed based on column adsorption and FT-IR results.",

author = "Wang, {Z. M.} and T. Arai and M. Kumagai",

year = "2001",

month = apr,

day = "18",

doi = "10.1021/ie000895o",

language = "English",

volume = "40",

pages = "1864--1871",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

number = "8",

}

TY - JOUR

T1 - Cooperative and competitive adsorption mechanism of NO2, NO, and H2O on H-type mordenite

AU - Wang, Z. M.

AU - Arai, T.

AU - Kumagai, M.

PY - 2001/4/18

Y1 - 2001/4/18

N2 - To elucidate the interaction mechanism of NOx (NO2 and NO) and H2O on the surface of H-type mordenite (HM), the dynamic adsorption properties of NO2 + H2O + O2 and NO + H2O + O2 mixtures were examined and the surface reaction of NOx and H2O was studied by an in-situ FT-IR spectroscopic method. It was found that NO2 can be dissociatively adsorbed on two kinds of adsorption sites on HM to form nitric acid like species by interacting with Brønsted acid sites, whereas NO + O2 + H2O adsorption is a competitive process of NO oxidation and H2O adsorption without leading to formation of nitric acid like species. The difference between NO2 adsorption sites and NO oxidation sites gives rise to the difference in their breakthrough properties. Adsorption/catalytic reaction models are proposed based on column adsorption and FT-IR results.

AB - To elucidate the interaction mechanism of NOx (NO2 and NO) and H2O on the surface of H-type mordenite (HM), the dynamic adsorption properties of NO2 + H2O + O2 and NO + H2O + O2 mixtures were examined and the surface reaction of NOx and H2O was studied by an in-situ FT-IR spectroscopic method. It was found that NO2 can be dissociatively adsorbed on two kinds of adsorption sites on HM to form nitric acid like species by interacting with Brønsted acid sites, whereas NO + O2 + H2O adsorption is a competitive process of NO oxidation and H2O adsorption without leading to formation of nitric acid like species. The difference between NO2 adsorption sites and NO oxidation sites gives rise to the difference in their breakthrough properties. Adsorption/catalytic reaction models are proposed based on column adsorption and FT-IR results.

UR - http://www.scopus.com/inward/record.url?scp=0035906091&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035906091&partnerID=8YFLogxK

U2 - 10.1021/ie000895o

DO - 10.1021/ie000895o

M3 - Article

AN - SCOPUS:0035906091

VL - 40

SP - 1864

EP - 1871

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

SN - 0888-5885

IS - 8

ER -