Determination of proton- and oxide ion tracer diffusion in lanthanum tungstate (La/W = 5.6) by means of ToF-SIMS
Literature Information
Ragnhild Hancke, Sarah Fearn, John A. Kilner, Reidar Haugsrud
Tracer diffusion of protons and oxide ions, as well as chemical diffusion of water, have been determined for the high temperature proton conductor lanthanum tungstate by means of time-of-flight secondary ion mass spectrometry (ToF-SIMS). The oxygen tracer diffusion and surface exchange coefficients, and , were measured after exchange anneals in water vapor enriched in H218O between 350 and 620 °C, and the apparent activation energies were 176 and 82 kJ mol−1, respectively. The hydrogen tracer diffusion coefficient () was measured between 220 and 320 °C after exchange anneals in D2O-containing atmospheres, and the apparent activation energy was 63 kJ mol−1. The extracted agrees with the results of transient conductivity- and TG-measurements. Chemical diffusion and surface exchange coefficients, and , were measured at 250 and 400 °C, and the result confirms that the material is hydrated by ambipolar sluggish transport of protons and oxide ions. The surface exchange coefficients were compared to the result of TG relaxation, suggesting that access to oxygen vacancies limits the overall surface exchange reaction under incorporation of water and oxygen.
Recommended Journals
Related Literature
Zeolite membrane reactors: from preparation to application in heterogeneous catalytic reactions
W. Rahmah, Z. Wang, S. Kawi
DOI: 10.1039/D0RE00388C
Reactive crystallization: a review
Matthew A. McDonald, Hossein Salami, Patrick R. Harris, Colton E. Lagerman, Xiaochuan Yang, Andreas S. Bommarius, Martha A. Grover, Ronald W. Rousseau
DOI: 10.1039/D0RE00272K
Xanthate-mediated living/controlled radical copolymerization of hexafluoropropylene and butyl vinyl ether under 60Co γ-ray irradiation and preparation of fluorinated polymers end-capped with a fluoroalkyl sulfonic acid group
Pucheng Wang, Jingwen Dai, Lei Liu, Qibao Dong, Bangkun Jin, Ruke Bai
DOI: 10.1039/C3PY21158D
A modular construction kit for supramolecular polymer gels
Torsten Rossow, Sebastian Hackelbusch, Peter van Assenbergh
DOI: 10.1039/C3PY00104K
The reverse water gas shift reaction: a process systems engineering perspective
Miriam González-Castaño, Bogdan Dorneanu, Harvey Arellano-García
DOI: 10.1039/D0RE00478B
Ring-opening polymerization of racemic β-butyrolactone promoted by rare earth trisborohydride complexes towards a PHB-diol: an experimental and DFT study
Sophie M. Guillaume, Liana Annunziata, Iker del Rosal, Christophe Iftner, Laurent Maron, Peter W. Roesky, Matthias Schmid
DOI: 10.1039/C3PY00056G
Organic acids can crosslink poly(ionic liquid)s into mesoporous polyelectrolyte complexes
Qiang Zhao, Sebastian Soll, Markus Antonietti, Jiayin Yuan
DOI: 10.1039/C3PY00159H
Novel isoindigo-based conjugated polymers for solar cells and field effect transistors
Khalid Mahmood, Zheng-Ping Liu, Cuihong Li, Zhen Lu, Tao Fang, Xiao Liu, Jianjun Zhou, Ting Lei, Jian Pei, Zhishan Bo
DOI: 10.1039/C3PY00341H
You might also like
What are the main uses of 4-Nitrophenyl phosphate disodium salt hexahydrate (CAS: 333338-18-4)?
4-Nitrophenyl phosphate disodium salt hexahydrate is primarily used as a substra...
What are the main uses of 2-(Trifluoromethyl)-1,3-oxazole-4-carboxylic Acid (CAS: 1060816-01-4)?
2-(Trifluoromethyl)-1,3-oxazole-4-carboxylic Acid (CAS: 1060816-01-4) is widely ...
How should 2-Fluoro-4-biphenylcarboxylic acid (CAS: 137045-30-8) be stored?
2-Fluoro-4-biphenylcarboxylic acid should be stored in a cool, dry place at room...
What industries use Prednisolone-21-Carboxylic Acid (CAS: 61549-70-0)?
Prednisolone-21-Carboxylic Acid is primarily used in the pharmaceutical industry...
How should 4-(Hydrazinomethyl)-1,2,3-benzenetriol (CAS: 3614-72-0) be stored?
4-(Hydrazinomethyl)-1,2,3-benzenetriol (CAS: 3614-72-0) should be stored in a co...
What industries use 4-Amino-1-methyl-1H-pyrazole-5-carboxylic acid hydrochloride (CAS: 92534-70-8)?
4-Amino-1-methyl-1H-pyrazole-5-carboxylic acid hydrochloride (CAS: 92534-70-8) i...
What regulatory guidelines apply to dehydropachymic acid (CAS: 77012-31-8)?
Dehydropachymic acid (CAS: 77012-31-8) is regulated by various agencies. It fall...
What is the market or research trend for 6-[(2,2-Dimethylpropanoyl)amino]nicotinic acid (CAS: 898561-66-5)?
The market and research trends for 6-[(2,2-Dimethylpropanoyl)amino]nicotinic aci...
How should 1,10-Phenanthroline-2,9-dicarbaldehyde (CAS: 57709-62-3) be stored?
1,10-Phenanthroline-2,9-dicarbaldehyde should be stored in a cool, dry place awa...
How is 5-Carbamoyl-11-oxo-10,11-dihydro-5H-dibenzo[b,f]azepin-10-yl acetate (CAS: 113952-21-9) typically synthesized?
5-Carbamoyl-11-oxo-10,11-dihydro-5H-dibenzo[b,f]azepin-10-yl acetate can be synt...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.














