XPS-SIMS study on the surface chemistry of commercially available activated carbons used as catalyst supports

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90254-F· OSTI ID:7162062

Albers, P; Deller, K; Despeyroux, B M; Schaefer, A; Seibold, K ^[1]

---

1. Degussa AG, Hanau (Germany)

The specific surface properties of activated carbons used as support materials for precious metal catalysts were investigated by XPS and SIMS. The surface C/O ratios and changes in the spectrum of surface-functional groups after different chemical pretreatments were measured. A correlation between the differences in graphitic/aromatic and aliphatic carbon contributions and of hydrogen present on the carbonaceous surfaces and the corresponding XPS and SIMS signals has been observed. The influence of natural impurities of activated carbons on the catalytic activity of powdered-type catalysts and the effect of surface carbides on the precious metal dispersion on pelletized shell-type catalysts are presented. The information gives a better understanding of the interdependence between the surface chemistry of the activated carbon and the performance of the catalysts.

• OSTI ID: 7162062
• Journal Information: Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 133:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACTIVATED CARBON
ADSORBENTS
AROMATICS
CARBIDES
CARBON
CARBON COMPOUNDS
CATALYSIS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL ANALYSIS
CHEMICAL PREPARATION
ELECTRON SPECTROSCOPY
ELEMENTAL MINERALS
ELEMENTS
GRAPHITE
HETEROGENEOUS CATALYSIS
HYDROGEN
IMPURITIES
ION MICROPROBE ANALYSIS
MASS SPECTROSCOPY
MICROANALYSIS
MINERALS
NONDESTRUCTIVE ANALYSIS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN
PHOTOELECTRON SPECTROSCOPY
QUANTITY RATIO
SPECTROSCOPY
SURFACE PROPERTIES
SYNTHESIS
X-RAY SPECTROSCOPY