The chemistry of the palladium phase in Pd/Ce/Al2O3 during ammonia formation
Other conference contribution, 2016

The formation of NH3 from NO is a crucial reaction for passive-selective catalytic reduction applications. In this application, an in situ supply of NH3 is formed in oxygen-lean conditions, which can subsequently be used to reduce NO to N2 in the presence of excess O2 [1]. On the fundamental level, producing NH3 from NO through heterogeneous catalytic processes involves fascinating surface chemistry that is not yet well understood. In the presence of stoichiometric and excess oxygen concentrations, NH3 formation is suppressed. However, we have previously shown that Pd/Ce/Al2O3 is a promising formulation, able to temporarily facilitate the formation of ammonia under globally slightly-oxidizing but locally rich conditions [2]. This work uses in situ X-ray absorption spectroscopy (XAS) to identify how the oxidation state of the catalytically active phase is affected during transient pulses of O2 in the presence of either pure NO or a combination of NO, CO and H2.

Author

Emma Adams

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Other publications Research

Magnus Skoglundh

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Other publications Research

Johan Nilsson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Competence Centre for Catalysis (KCK)

Other publications Research

Natalia Mihaela Martin

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Other publications Research

Giovanni Agostini

European Synchrotron Radiation Facility (ESRF)

Olivier Mathon

European Synchrotron Radiation Facility (ESRF)

Per-Anders Carlsson

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Other publications Research

Competence Centre for Catalysis

Volvo Cars, 2014-01-01 -- 2017-12-31.

Chalmers, 2014-01-01 -- 2017-12-31.

Swedish Energy Agency (22490-3), 2014-01-01 -- 2017-12-31.

Wärtsilä Finland, 2014-01-01 -- 2017-12-31.

Haldor Topsoe, 2014-01-01 -- 2017-12-31.

ECAPS AB, 2014-01-01 -- 2017-12-31.

Scania CV AB, 2014-01-01 -- 2017-12-31.

Volvo Group, 2014-01-01 -- 2017-12-31.

Show Project

High efficient Otto engine with diluted combustion II

Swedish Energy Agency (35561-2), 2015-01-01 -- 2017-12-31.

Show Project

Driving Forces

Sustainable development

Areas of Advance

Nanoscience and Nanotechnology

Transport

Energy

Materials Science

Subject Categories

Physical Chemistry

Chemical Process Engineering

Materials Chemistry

More information

Latest update

10/28/2018

Feedback and support

If you have questions, need help, find a bug or just want to give us feedback you may use this form, or contact us per e-mail research.lib@chalmers.se.

About

Research.chalmers.se contains research information from Chalmers University of Technology, Sweden. It includes information on projects, publications, research funders and collaborations.

More about coverage period and what is publicly available

Privacy and cookies

Accessibility

Citation Style Language
citeproc-js (Frank Bennett)

Links

Chalmers Library
Chalmers Research
Chalmers Student Theses

Chalmers University of Technology

SE-412 96 GOTHENBURG, SWEDEN
PHONE: +46 (0)31-772 10 00
WWW.CHALMERS.SE