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Merck

734624

Samarium-doped ceria

greener alternative

<0.5 μm particle size, powder, contains 20 mol % samarium as dopant

Synonym(s):

Cerium samarium oxide, Cerium(IV) oxide-samarium doped, SDC-20, Samarium-doped cerium oxide, SDC, Samarium-doped ceria

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About This Item

Empirical Formula (Hill Notation):
CeO2
Molecular Weight:
172.11
UNSPSC Code:
26111700
PubChem Substance ID:
329764915
NACRES:
NA.23
MDL number:
MFCD04974842

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Product Name

Cerium(IV) oxide-samarium doped, <0.5 μm particle size, powder, contains 20 mol % samarium as dopant

SMILES string

[Sm].O=[Ce]=O

InChI key

AQGZISMLQKBRRO-UHFFFAOYSA-N

InChI

1S/Ce.2O.Sm

form

powder

contains

20 mol % samarium as dopant

composition

Sm0.2Ce0.8O1.9

greener alternative product characteristics

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surface area

10-14 m2/g

particle size

0.1-0.5 μm (d50), <0.5 μm

bulk density

1.787 g/mL

greener alternative category

, Enabling

Quality Level

100

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General description

Cerium(IV) oxide-samarium doped powder (20% mol samarium doped) (SDC-20) is an electrolytic material with a high oxygen ion conductivity. Samarium ion acts as an aliovalent cation that can be incorporated into the host lattice to increase the oxygen vacancy concentration and improve the oxide ion conduction in cerium oxide. It can be synthesized by reverse strike co-precipitation technique.
Samarium doped ceria may be used as an electrolyte in solid oxide fuel cells (SOFCs). Electrical conductivity as a function of temperature of doped ceria was investigated in a study. Relation of dopant type, oxygen vacancy ordering and ionic conductivity was investigated by transmission electron microscopy and electron energy loss spectroscopy.
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Application

Cerium(IV) oxide-samarium doped can be used in the fabrication of solid oxide fuel cells (SOFCs), which can further be used as environmentally-friendly sources of alternative energy.

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Class I Designated Chemical Substances

prtr

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

734624-10G: + 734624-BULK: + 734624-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ9338
MKCP5542
MKCM1109
MKCH9579
MKCC9444

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Harsharan K Singh et al.
Transplantation, 99(3), 609-615 (2014-08-20)
A qualitative highly predictive urinary test for polyomavirus nephropathy (PVN) is the PV-Haufen test. This article evaluates whether a quantitative PV-Haufen analysis, that is, the number of PV-Haufen shed per milliliter urine, predicts PVN disease grades and the severity of
AC impedance investigation of samarium-doped ceria."
Zhan Z, et al.
Journal of the Electrochemical Society, 148(5), A427-A432 (2001)
Intermediate-temperature electrochemical performance of a polycrystalline PrBaCo2O5+ δ cathode on samarium-doped ceria electrolyte.
Chen D, et al.
Journal of Power Sources, 188(1), 96-105 (2009)
Stephan Immenschuh et al.
Transplantation, 99(1), 56-62 (2014-08-15)
Treatment of patients with antibody-mediated rejection (AMR) after kidney transplantation by rituximab and plasmapheresis is ambiguous. Because of its unknown efficiency and serious side effects, biomarkers, which are predictive for responsiveness to this treatment in AMR patients, are required. Twenty
Oxygen vacancy ordering in heavily rare-earth-doped ceria.
Ou DR, et al.
Applied Physics Letters, 89(17) (2006)
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