Thermal decomposition of bulk and supported barium nitrate

被引：19

作者：

Bardwell, Christopher J. ^{[1
]}

Bickley, Roger I. ^{[1
]}

Poulston, Stephen ^{[3
]}

Twigg, Martyn V. ^{[2
]}

机构：

[1] Univ Bradford, Dept Chem & Forens Sci, Bradford BD7 1DP, W Yorkshire, England

[2] Johnson Matthey Plc, Royston SG8 5HE, Herts, England

[3] Johnson Matthey Plc, Blounts Court, Sonning Common, Reading RG4 9NH, Berks, England

来源：

THERMOCHIMICA ACTA | 2015年 / 613卷

基金：

英国工程与自然科学研究理事会;

关键词：

NOx storage; Barium nitrate; TGA; Alumina; Titania; Decomposition; SITU RAMAN CHARACTERIZATION; NOX STORAGE; MAGNESIUM-OXIDE; NITROGEN-OXIDES; NITRIC-OXIDE; CATALYSTS; EXHAUST; RELEASE; WATER; MODEL;

D O I：

10.1016/j.tca.2015.05.013

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Anhydrous bulk barium nitrate decomposes over the temperature range 500-700 degrees C, with the main decomposition taking place at 630 degrees C. The gaseous products were oxygen and nitric oxide that were evolved simultaneously. Minor amounts of nitrogen dioxide, nitrogen, and nitrous oxide were also detected. Dispersing the barium nitrate on alumina and titania led to substantial reductions in the nitrate decomposition temperature and to more complex decomposition profiles as a result of synergistic effects between the nitrate and the supports, and to the adsorption of some decomposition product gases upon them leading to the release of greater amounts of nitrous oxide. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：94 / 99

页数：6

共 34 条

[1] [Anonymous], 2004, CRC HDB CHEM PHYS
[2] Avedikian S.Z., 1934, STUDY THERMAL DECOMP
[3] Bickley R. I., 1988, P 9 INT C CAT, V3, P1505
[4] Removal of nitrogen oxides from the exhaust of a lean-tune gasoline engine
Bogner, W
Kramer, M
Krutzsch, B
Pischinger, S
Voigtlander, D
Wenninger, G
Wirbeleit, F
Brogan, MS
Brisley, RJ
Webster, DE
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 1995, 7 (1-2) : 153 - 171
[5] BROGAN MS, 1995, 952490 SAE
[6] The dependence of NO2 and CO2 uptake and release on BaO content for NOx storage catalysts made using different precursor salts
Cant, Noel W.
Liu, Irene O. Y.
Patterson, Michael J.
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 77 (1-2) : 12 - 18
[7] The effect of water and reductants on the release of nitrogen oxides stored on BaO/Al2O3
Cant, NW
Patterson, MJ
[J]. CATALYSIS LETTERS, 2003, 85 (3-4) : 153 - 157
[8] Thermal decomposition of dispersed and bulk-like NOx species in model NOx trap materials
Chen, XY
Schwank, J
Li, J
Schneider, WF
Goralski, CT
Schmitz, PJ
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 61 (1-2) : 164 - 175
[9] NOx storage in barium-containing catalysts
Fridell, E
Skoglundh, M
Westerberg, B
Johansson, S
Smedler, G
[J]. JOURNAL OF CATALYSIS, 1999, 183 (02) : 196 - 209
[10] Model studies of NOx storage and sulphur deactivation of NOx storage catalysts
Fridell, E
Persson, H
Olsson, L
Westerberg, B
Amberntsson, A
Skoglundh, M
[J]. TOPICS IN CATALYSIS, 2001, 16 (1-4) : 133 - 137

← 1 2 3 4 →