TY - JOUR

T1 - Mesoporous high surface area Ce0.9Gd0.1O1.95 synthesized by spray drying

A1 - Lundberg,Mats

A1 - Wang,Hsiang-Jen

A1 - Blennow Tullmar,Peter

A1 - Menon,Mohan

AU - Lundberg,Mats

AU - Wang,Hsiang-Jen

AU - Blennow Tullmar,Peter

AU - Menon,Mohan

PB - Pergamon

PY - 2011

Y1 - 2011

N2 - Mesoporous gadolinium doped cerium dioxide with high surface area was produced by spray drying using Pluronic 123 as surfactant. The powder, when calcined at 400 °C, had a BET surface area of 136 m2 g−1 and was polycrystalline as confirmed by XRD and TEM. XEDS confirmed Ce, Gd and O, as the only elements present in the powders. Nitrogen adsorption measurements showed that the material was mesoporous with pore diameters of approximately 10 nm, which was later confirmed by TEM studies. TEM–EELS were used to confirm that Ce was in the +4 oxidation state. SEM studies showed particles of 10 nm diameter, corresponding to the crystallite size calculated from XRD data. The similar size range of the mesopores and the observed crystallite size indicates that the porosity is partly formed from intergranular mesoporosity. Using the spray drying method of a surfactant assisted liquid precursor solution it can be possible to manufacture mesoporous gadolinium doped ceria in large quantities in a continuous production.

AB - Mesoporous gadolinium doped cerium dioxide with high surface area was produced by spray drying using Pluronic 123 as surfactant. The powder, when calcined at 400 °C, had a BET surface area of 136 m2 g−1 and was polycrystalline as confirmed by XRD and TEM. XEDS confirmed Ce, Gd and O, as the only elements present in the powders. Nitrogen adsorption measurements showed that the material was mesoporous with pore diameters of approximately 10 nm, which was later confirmed by TEM studies. TEM–EELS were used to confirm that Ce was in the +4 oxidation state. SEM studies showed particles of 10 nm diameter, corresponding to the crystallite size calculated from XRD data. The similar size range of the mesopores and the observed crystallite size indicates that the porosity is partly formed from intergranular mesoporosity. Using the spray drying method of a surfactant assisted liquid precursor solution it can be possible to manufacture mesoporous gadolinium doped ceria in large quantities in a continuous production.

KW - Solid Oxide Fuel Cells

KW - Fuel Cells and Hydrogen

KW - Brændselsceller og brint

U2 - 10.1016/j.ceramint.2010.10.024

DO - 10.1016/j.ceramint.2010.10.024

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 3

VL - 37

SP - 797

EP - 802

ER -