CO Oxidation Activity at Room Temperature over Au/CeO2 Catalysts: Disclosure of Induction Period and Humidity Effect

ACS Catalysis ◽  
2014 ◽  
Vol 4 (10) ◽  
pp. 3481-3489 ◽  
Author(s):  
Shuo Zhang ◽  
Xiao-Song Li ◽  
Bingbing Chen ◽  
Xiaobing Zhu ◽  
Chuan Shi ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Induction Period ◽  
Room Temperature ◽  
Humidity Effect ◽  
Oxidation Activity

Unraveling template-free fabrication of carbon nitride nanorods codoped with Pt and Pd for efficient electrochemical and photoelectrochemical carbon monoxide oxidation at room temperature

Nanoscale ◽  
2019 ◽  
Vol 11 (24) ◽  
pp. 11755-11764 ◽  
Author(s):  
Kamel Eid ◽  
Mostafa H. Sliem ◽  
Aboubakr M. Abdullah
Keyword(s):  
Carbon Monoxide ◽  
Co Oxidation ◽  
Carbon Nitride ◽  
Room Temperature ◽  
Carbon Monoxide Oxidation ◽  
Oxidation Activity ◽  
Template Free

PtPd/CN nanorods synthesized via the rolling up mechanism enhanced the electrochemical and photoelectrochemical CO oxidation activity substantially at room temperature.

Single–atom manganese and nitrogen co-doped graphene as low-cost catalysts for the efficient CO oxidation at room temperature

2021 ◽  
Vol 536 ◽  
pp. 147809
Author(s):  
Mingming Luo ◽  
Zhao Liang ◽  
Chao Liu ◽  
Xiaopeng Qi ◽  
Mingwei Chen ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Room Temperature ◽  
Low Cost ◽  
Single Atom ◽  
Doped Graphene ◽  
Co Doped

High low-temperature CO oxidation activity of platinum oxide prepared by magnetron sputtering

2015 ◽  
Vol 345 ◽  
pp. 319-328 ◽  
Author(s):  
V. Johánek ◽  
M. Václavů ◽  
I. Matolínová ◽  
I. Khalakhan ◽  
S. Haviar ◽  
...  
Keyword(s):  
Low Temperature ◽  
Magnetron Sputtering ◽  
Co Oxidation ◽  
Platinum Oxide ◽  
Oxidation Activity ◽  
Low Temperature Co Oxidation

Uniform and Porous Ce1–xZnxO2−δ Solid Solution Nanodisks: Preparation and Their CO Oxidation Activity

2012 ◽  
Vol 116 (24) ◽  
pp. 13127-13132 ◽  
Author(s):  
Sheng-Liang Zhong ◽  
Lin-Fei Zhang ◽  
Lei Wang ◽  
Wei-Xin Huang ◽  
Cong-Min Fan ◽  
...  
Keyword(s):  
Solid Solution ◽  
Co Oxidation ◽  
Oxidation Activity

scholarly journals Linseed oil: Characterization and study of its oxidative degradation

2020 ◽  
Vol 71 (1) ◽  
pp. 337 ◽  
Author(s):  
B. M. Berto ◽  
R. K.A. Garcia ◽  
G. D. Fernandes ◽  
D. Barrera-Arellano ◽  
G. G. Pereira
Keyword(s):  
Fatty Acid ◽  
Oxidative Stability ◽  
Induction Period ◽  
Room Temperature ◽  
Linseed Oil ◽  
Oxidative Degradation ◽  
Acid Value ◽  
Quality Parameters ◽  
Time Intervals ◽  
Accelerated Oxidation

This paper proposes to characterize and monitor the degradation of linseed oil under two oxidation conditions using some traditional oxidative and quality parameters. The experimental section of this study was divided into 2 stages. In the first one, three commercial linseed oil samples (OL1, OL2, and OL3) were characterized according to oxidative stability (90 °C) and fatty acid composition. In the second stage, the OL1 sample, selected due to its availability, was subjected to the following oxidation procedures: storage at room temperature conditions with exposure to light and air (temperature ranging from 7 to 35 °C) for 140 days and accelerated oxidation at 100 °C for 7h. Samples were collected at different time intervals and analyzed for oxidative stability (90 °C), peroxide value, and acid value. The results showed that all the samples presented a similar fatty acid profile and that the OL3 sample showed a higher induction period (p < 0.05). Regarding the oxidative degradation, the induction period of the OL1 sample reduced from 9.7 to 5.7 and 9.7 to 6.3 during 140 days of storage under room temperature and 7 h of accelerated oxidation, respectively. The end of induction period of the OL1 sample is expected to occur within 229 days according to an exponential mathematical model fitted to the induction period values at different temperatures. In addition, the OL1 sample met the limits proposed by Codex and Brazilian regulations for peroxide and acid values during the oxidation time intervals.

scholarly journals A Novel Trace-Level Ammonia Gas Sensing Based on Flexible PAni-CoFe2O4 Nanocomposite Film at Room Temperature

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3077
Author(s):  
Rima D. Alharthy ◽  
Ahmed Saleh
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Oxidative Polymerization ◽  
Portable Devices ◽  
Trace Level ◽  
Humidity Effect ◽  
Sensor Performance ◽  
Wearable Electronic ◽  
Relative Humidity Effect

In this study, we developed a new chemi-resistive, flexible and selective ammonia (NH3) gas sensor. The sensor was prepared by depositing thin film of polyaniline-cobalt ferrite (PAni-CoFe2O4) nanocomposite on flexible polyethylene terephthalate (PET) through an in situ chemical oxidative polymerization method. The prepared PAni-CoFe2O4 nanocomposite and flexible PET-PAni-CoFe2O4 sensor were evaluated for their thermal stability, surface morphology and materials composition. The response to NH3 gas of the developed sensor was examined thoroughly in the range of 1–50 ppm at room temperature. The sensor with 50 wt% CoFe2O4 NPs content showed an optimum selectivity to NH3 molecules, with a 118.3% response towards 50 ppm in 24.3 s response time. Furthermore, the sensor showed good reproducibility, ultra-low detection limit (25 ppb) and excellent flexibility. In addition, the relative humidity effect on the sensor performance was investigated. Consequently, the flexible PET-PAni-CoFe2O4 sensor is a promising candidate for trace-level on-site sensing of NH3 in wearable electronic or portable devices.

Inside Cover: Trends in the Catalytic CO Oxidation Activity of Nanoparticles (Angew. Chem. Int. Ed. 26/2008)

2008 ◽  
Vol 47 (26) ◽  
pp. 4762-4762
Author(s):  
Hanne Falsig ◽  
Britt Hvolbæk ◽  
Iben S. Kristensen ◽  
Tao Jiang ◽  
Thomas Bligaard ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxidation Activity ◽  
Catalytic Co Oxidation

CO oxidation activity enhancement of Ce0.95Cu0.05O2−δ induced by Pd co-substitution

2016 ◽  
Vol 6 (22) ◽  
pp. 8104-8116 ◽  
Author(s):  
Thandanani Cwele ◽  
N. Mahadevaiah ◽  
Sooboo Singh ◽  
Holger B. Friedrich ◽  
A. K. Yadav ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Superior Performance ◽  
Oxidation Activity ◽  
Co Substitution ◽  
Activity Enhancement

Synergism between Pd2+, Cu2+ and cerium ions in Ce0.93Pd0.02Cu0.05O2−δ gives improved reducibility and superior performance for CO oxidation.

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