Kinetics and mechanism of H2O2 decomposition by Cu(II)-, Co(II)-, and Fe(III)-Amine complexes on the surface of Silica-Alumina (25% Al2O3)

1994 ◽  
Vol 26 (11) ◽  
pp. 1055-1061 ◽  
Author(s):  
Mohamed A. Salem ◽  
Ibrahim A. Salem ◽  
Ali H. Gemeay
Keyword(s):  
Kinetics And Mechanism ◽  
H2o2 Decomposition ◽  
Amine Complexes ◽  
Silica Alumina

scholarly journals The kinetics and mechanism of H2O2 decomposition at the U3O8 surface in bicarbonate solution

RSC Advances ◽  
2021 ◽  
Vol 11 (46) ◽  
pp. 28940-28948
Author(s):  
John McGrady ◽  
Yuta Kumagai ◽  
Masayuki Watanabe ◽  
Akira Kirishima ◽  
Daisuke Akiyama ◽  
...  
Keyword(s):  
Kinetics And Mechanism ◽  
H2o2 Decomposition

A transition from catalytic to oxidative H2O2 decomposition on U3O8 was observed with NaHCO3 with significant implications for uranium dissolution.

Fluidized Catalytic Cracking Catalyst Microstructure as Determined by A Scanning Ion Microprobe

1990 ◽  
Vol 48 (2) ◽  
pp. 302-303
Author(s):  
J.K. Lampert ◽  
G.S. Koermer ◽  
J.M. Macaoy ◽  
J.M. Chabala ◽  
R. Levi-Setti
Keyword(s):  
Catalytic Cracking ◽  
Secondary Ion Mass Spectrometry ◽  
Fuel Oil ◽  
Ion Microprobe ◽  
Fluidized Catalytic Cracking ◽  
Ion Probe ◽  
Silica Alumina ◽  
Resolution Imaging ◽  
The University ◽  
High Spatial Resolution Imaging

We have used high spatial resolution imaging secondary ion mass spectrometry (SIMS) to differentiate mineralogical phases and to investigate chemical segregations in fluidized catalytic cracking (FCC) catalyst particles. The oil industry relies on heterogeneous catalysis using these catalysts to convert heavy hydrocarbon fractions into high quality gasoline and fuel oil components. Catalyst performance is strongly influenced by catalyst microstructure and composition, with different chemical reactions occurring at specific types of sites within the particle. The zeolitic portions of the particle, where the majority of the oil conversion occurs, can be clearly distinguished from the surrounding silica-alumina matrix in analytical SIMS images.The University of Chicago scanning ion microprobe (SIM) employed in this study has been described previously. For these analyses, the instrument was operated with a 40 keV, 10 pA Ga+ primary ion probe focused to a 30 nm FWHM spot. Elemental SIMS maps were obtained from 10×10 μm2 areas in times not exceeding 524s.

Kinetics and mechanism for oxime formation from 2-quinolinecarboxaldehyde

10.1002/kin.7 ◽  
1996 ◽  
Vol 28 (9) ◽  
pp. 687-691 ◽  
Author(s):  
M. Calzadilla ◽  
A. Malpica ◽  
P. M. Diaz
Keyword(s):  
Kinetics And Mechanism ◽  
Oxime Formation
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