Optimization of Catalyst Pore Structure by Kinetics and Diffusion Analysis

2004 ◽  
pp. 275-325
Keyword(s):  
Pore Structure ◽  
Diffusion Analysis ◽  
And Diffusion

scholarly journals The metabolism of benzene by bacteria. Purification and some properties of the enzyme cis-1,2-dihydroxycyclohexa-3,5-diene (nicotinamide–adenine dinucleotide) oxidoreductase (cis-benzene glycol dehydrogenase)

1973 ◽  
Vol 136 (4) ◽  
pp. 927-934 ◽  
Author(s):  
B. C. Axcell ◽  
P. J. Geary
Keyword(s):  
Molecular Weight ◽  
Polyacrylamide Gel Electrophoresis ◽  
Sodium Dodecyl ◽  
Homogeneous State ◽  
Hydrogen Acceptor ◽  
Diffusion Analysis ◽  
A Subunit ◽  
Partial Inactivation ◽  
And Diffusion ◽  
Cis Isomer

1. cis-Benzene glycol dehydrogenase was purified to a homogeneous state from a species of Pseudomonas grown with benzene as the major carbon source. 2. The enzyme was specific for the cis-isomer of its substrate and required NAD+as hydrogen acceptor. 3. Partial inactivation of the enzyme, which was observed during purification, could be reversed by the addition of Fe2+and GSH. 4. A molecular weight of 440000 was calculated from data obtained by sedimentation-velocity and diffusion analysis in the ultracentrifuge. Sodium dodecyl sulphate polyacrylamide-gel electrophoresis indicated a subunit of molecular weight 110000. 5. p-Chloromercuribenzoic acid and 1,10-phenanthroline were shown to inhibit the enzyme.

Pore Structure and Diffusion Tortuosity of Porous ZrO2 Synthesized by Two Different Colloid-Aggregation Processes

1995 ◽  
Vol 170 (2) ◽  
pp. 299-307 ◽  
Author(s):  
C.Francisco Lorenzano-Porras ◽  
Michael J. Annen ◽  
Michael C. Flickinger ◽  
Peter W. Carr ◽  
Alon V. McCormick
Keyword(s):  
Pore Structure ◽  
Aggregation Processes ◽  
And Diffusion

scholarly journals Relationship between Pore Structure and Chloride Ion Diffusivity in Cementitious Materials

2018 ◽  
Author(s):  
Yuya Sakai
Keyword(s):  
Pore Structure ◽  
Cement Paste ◽  
Pore Diameter ◽  
Chloride Ion ◽  
Total Porosity ◽  
Cementitious Materials ◽  
The Other ◽  
Diffusion Test ◽  
Other Hand ◽  
And Diffusion

In this study, literature on pore structure and chloride ion diffusivity was collected to investigate the correlation of pore structure indicators with diffusivity. Good correlation between total porosity and chloride ion diffusivity was found when the samples did not contain admixture materials and diffusion test was conducted without acceleration. Pore diameter indicators did not correlate with diffusivity. The diffusivity of cement paste was reduced by admixture materials compared to that without admixture materials even if the total porosity is the same. On the other hand, the diffusivity of concrete was not reduced by admixture materials.

Pulsed Field Gradient Nuclear Magnetic Resonance and Diffusion Analysis in Battery Research

2021 ◽  
Author(s):  
Kee Sung Han ◽  
J. David Bazak ◽  
Ying Chen ◽  
Trent R. Graham ◽  
Nancy M. Washton ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Field Gradient ◽  
Pulsed Field ◽  
Diffusion Analysis ◽  
And Diffusion ◽  
Nuclear Magnetic
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