fulltext.study @t Gmail

Effect of potassium in calcined Co–Mn–Al layered double hydroxide on the catalytic decomposition of N2O

Paper ID Volume ID Publish Year Pages File Format Full-Text
47947 46486 2009 9 PDF Available
Title
Effect of potassium in calcined Co–Mn–Al layered double hydroxide on the catalytic decomposition of N2O
Abstract

A series of catalysts was prepared by thermal treatment (500 °C) of the coprecipitated Co–Mn–Al layered double hydroxide (Co:Mn:Al molar ratio of 4:1:1) doped with various amount of potassium (0–3 wt%). Obtained spinel-like mixed oxides were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, BET surface area measurements, temperature-programmed H2 reduction, and temperature-programmed CO2 and NH3 desorption. The prepared catalysts were tested for N2O decomposition to determine the effect of K addition on the catalytic activity in the presence of O2, NOx and H2O. An optimum K content of ca. 0.9–1.6 wt% was found to achieve a high catalytic activity in the presence of O2 and H2O, while the non-modified Co–Mn–Al mixed oxide was the most active catalyst in the presence of O2 and NOx. The addition of potassium to the Co–Mn–Al mixed oxide apparently results in a modification of both electronic properties of active metals and acid-base function of the catalyst surface.

Keywords
Nitrous oxide; Catalytic decomposition; Layered double hydroxides; Mixed oxide catalysts; Potassium promoter
First Page Preview
Effect of potassium in calcined Co–Mn–Al layered double hydroxide on the catalytic decomposition of N2O
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 90, Issues 1–2, 25 July 2009, Pages 132–140
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us