Preparation and hydrogen permeation of BaCe_0.95Nd_0.05O_3-δ membranes

authored by: Mingya Cai, Song Liu, Konstantin Efimov, Jürgen Caro, Armin Feldhoff, Haihui Wang
Abstract: A mixed proton-electron conducting perovskite made of BaCe_0.95Nd_0.05O_3-δ (BCN) was prepared by EDTA/citric acid complexing method. The precursor was characterized by differential scanning calorimetry (DSC), thermogravimetry (TG), and X-ray diffraction (XRD). In order to learn the perovskite formation process during the calcination, the intermediate, i.e. the sample calcined at 750 °C for 5 h, was investigated by scanning (STEM), energy-filtered (EFTEM), and high-resolution transmission electron microscopy (HRTEM) as well as electron energy-loss spectroscopy (EELS). The results revealed that the perovskite structure was formed via a solid-state reaction between barium-cerium mixed carbonate and cerium-neodymium mixed oxide particles. Dense mixed proton-electron conducting BCN membranes were made by pressing BCN powder followed by sintering. The microstructure of the sintered membranes was investigated by scanning electron microscopy (SEM). Hydrogen permeation through the BCN membrane was studied using a high-temperature permeator. The hydrogen permeation fluxes under wet conditions are higher than those under dry conditions, which is due to increased proton concentrations in the H⁺ hopping via OH groups. The hydrogen permeation increased with increasing hydrogen and steam concentrations in the feed. For a steam concentration of 15 vol.%, the hydrogen permeation flux reaches 0.026 ml/min cm².
Organisation(s): Institute of Physical Chemistry and Electrochemistry
External Organisation(s): South China University of Technology
Type: Article
Journal: Journal of membrane science
Volume: 343
Pages: 90-96
No. of pages: 7
ISSN: 0376-7388
Publication date: 01.11.2009
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Biochemistry, General Materials Science, Physical and Theoretical Chemistry, Filtration and Separation
Electronic version(s): https://doi.org/10.1016/j.memsci.2009.07.011 (Access: Closed)

BibTeX

@article{5588d80100364f4384a1bd7eceec3302,
title = "Preparation and hydrogen permeation of BaCe0.95Nd0.05O3-δ membranes",
abstract = "A mixed proton-electron conducting perovskite made of BaCe0.95Nd0.05O3-δ (BCN) was prepared by EDTA/citric acid complexing method. The precursor was characterized by differential scanning calorimetry (DSC), thermogravimetry (TG), and X-ray diffraction (XRD). In order to learn the perovskite formation process during the calcination, the intermediate, i.e. the sample calcined at 750 °C for 5 h, was investigated by scanning (STEM), energy-filtered (EFTEM), and high-resolution transmission electron microscopy (HRTEM) as well as electron energy-loss spectroscopy (EELS). The results revealed that the perovskite structure was formed via a solid-state reaction between barium-cerium mixed carbonate and cerium-neodymium mixed oxide particles. Dense mixed proton-electron conducting BCN membranes were made by pressing BCN powder followed by sintering. The microstructure of the sintered membranes was investigated by scanning electron microscopy (SEM). Hydrogen permeation through the BCN membrane was studied using a high-temperature permeator. The hydrogen permeation fluxes under wet conditions are higher than those under dry conditions, which is due to increased proton concentrations in the H+ hopping via OH groups. The hydrogen permeation increased with increasing hydrogen and steam concentrations in the feed. For a steam concentration of 15 vol.%, the hydrogen permeation flux reaches 0.026 ml/min cm2.",
keywords = "Hydrogen energy, Membrane, Mixed conductor, Perovskite",
author = "Mingya Cai and Song Liu and Konstantin Efimov and J{\"u}rgen Caro and Armin Feldhoff and Haihui Wang",
note = "Funding Information: The authors greatly acknowledge the financial support by National Natural Science Foundation of China (nos. 20706020, U0834004), by the Program for New Century Excellent Talents in University (no. NECT-07-0307), Fok Ying Tung Education Foundation (no. 114019), New Teacher Fund of Ministry of Education of China (no. 20070561032) and by the National Basic Research Program of China (no. 2009CB623406).",
year = "2009",
month = nov,
day = "1",
doi = "10.1016/j.memsci.2009.07.011",
language = "English",
volume = "343",
pages = "90--96",
journal = "Journal of membrane science",
issn = "0376-7388",
publisher = "Elsevier BV",
number = "1-2",
}

Preparation and hydrogen permeation of BaCe0.95Nd0.05O3-δ membranes

Preparation and hydrogen permeation of BaCe_0.95Nd_0.05O_3-δ membranes