In situ XRD characterization of LaNiAlO model catalysts for CO2 reforming of methane

Hydrothermal and precipitation methods have been applied to synthesize nanoscale CeO2 catalysts for selective catalytic reduction of NO with hydrocarbon under oxygen-rich condition. The former procedure has the advantage of enhancing the hydrothermal stability of nanomaterial. BET results show that their surface areas are about 30-80 m2/g. Based on TEM results, hydrothermally prepared CeO2 shows very uniform grain shaped particles with size around 10-20 nanometers. Its thermal stability up to 1200°C has been confirmed by in-situ XRD. Furthermore, deNOx reaction with propene as reducing agent in the presence of 5% oxygen has been carried out to compare catalysts prepared by the above two methods. Results show that hydrothermally prepared catalyst is more active than the one prepared by precipitation method. The latter one lost half of its activity in the presence of 5% water vapor, while the former one could stand up to 10% water vapor in the gas mixture without losing much activity.

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Preparation and Characterization of Ni-Based Perovskite Catalyst for Steam CO2 Reforming of Methane

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2013.7005 ◽

2013 ◽

Vol 13 (6) ◽

pp. 4334-4337 ◽

Cited By ~ 5

Author(s):

Eun-Hyeok Yang ◽

Sang Woo Kim ◽

Byong Song Ahn ◽

Dong Ju Moon

Keyword(s):

Co2 Reforming ◽

Perovskite Catalyst ◽

Co2 Reforming Of Methane

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Development of a Time-Resolved In-Situ XRD System for Structural Characterization of Gas Storage Materials

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet.69.206 ◽

2005 ◽

Vol 69 (2) ◽

pp. 206-209 ◽

Cited By ~ 1

Author(s):

Mitsuhiro Wada ◽

Yasunori Tabira

Keyword(s):

Structural Characterization ◽

Gas Storage ◽

Time Resolved ◽

Storage Materials ◽

In Situ Xrd

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In Situ Catalytic Upgrading of Coal Pyrolysis Tar over Carbon-Based Catalysts Coupled with CO2 Reforming of Methane

Energy & Fuels ◽

10.1021/acs.energyfuels.7b01950 ◽

2017 ◽

Vol 31 (9) ◽

pp. 9356-9362 ◽

Cited By ~ 13

Author(s):

Mingyi Wang ◽

Lijun Jin ◽

Yang Li ◽

Jiaofei Wang ◽

Xiaoyu Yang ◽

...

Keyword(s):

Coal Pyrolysis ◽

Co2 Reforming ◽

Catalytic Upgrading ◽

Co2 Reforming Of Methane ◽

Pyrolysis Tar ◽

Carbon Based

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In-Situ X-Ray Characterization of LiMn2O4: A Comparison of Structural and Electrochemical Behavior

MRS Proceedings ◽

10.1557/proc-496-275 ◽

1997 ◽

Vol 496 ◽

Cited By ~ 3

Author(s):

Mark A. Rodriguez ◽

David Ingersoll ◽

Daniel H. Doughty

Keyword(s):

Crystal Structure ◽

Structural Changes ◽

Phase Changes ◽

X Ray ◽

In Situ Xrd ◽

Electrochemical Cycling ◽

Kinetic Effects ◽

Carbon Anodes

ABSTRACTLixMn2O4 materials are of considerable interest in battery research and development. The crystal structure of this material can significantly affect the electrochemical performance. The ability to monitor the changes of the crystal structure during use, that is during electrochemical cycling, would prove useful to verify these types of structural changes. We report in-situ XRD measurements of LiMn2O4 cathodes with the use of an electrochemical cell designed for in-situ X-ray analysis. Cells prepared using this cell design allow investigation of the changes in the LiMn2O4 structure during charge and discharge. We describe the variation in lattice parameters along the voltage plateaus and consider the structural changes in terms of the electrochemical results on each cell. Kinetic effects of LiMn2O4 phase changes are also addressed. Applications of the in-situ cell to other compounds such as LiCoO2 cathodes and carbon anodes are presented as well.

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