| dc.contributor.author |
Kanungo, S.B. |
|
| dc.contributor.author |
Mishra, S.K. |
|
| dc.date.accessioned |
2018-10-01T12:20:34Z |
|
| dc.date.available |
2018-10-01T12:20:34Z |
|
| dc.date.issued |
1997 |
|
| dc.identifier.citation |
Metallurgical And Materials Transactions B-Process Metallurgy And Materials Processing Science, 28(3), 1997: 371-387 |
|
| dc.identifier.issn |
1073-5615 |
|
| dc.identifier.uri |
http://ore.immt.res.in/handle/2018/699 |
|
| dc.description.abstract |
The kinetics of chloridization of finely divided as well as granulated nickel oxide:by gaseous HCl were studied in the temperature range 150 degrees C to 400 degrees C. The rate of chloridization depended upon temperature, partial pressure of HCl, and granule size. The conversion of NiO to NiCl2 follows the logarithmic rate law or a pore-blocking model, which is attributed to the large increase in molar volume of the product phase. The blocked pores decreased the diffusion of gaseous reactant through the product layer. This observation has been supported by the low value of activation energy, the high order of reaction with respect to the partial pressure of HCl (g), and a slope value of -2 for the log-log plot of rate constant vs grain size. The morphological characteristics of both unreacted and chloridized nickel oxide have been studied with the help of a scanning electron microscope. |
|
| dc.language |
en |
|
| dc.publisher |
Springer |
|
| dc.relation.isreferencedby |
SCI |
|
| dc.rights |
Copyright [1997]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository. |
|
| dc.subject |
Materials Sciences |
|
| dc.subject |
Materials Sciences |
|
| dc.subject |
Materials Sciences |
|
| dc.title |
Kinetics of chloridization of nickel oxide with gaseous hydrogen chloride |
|
| dc.type |
Journal Article |
|
| dc.affiliation.author |
CSIR-IMMT, Bhubaneswar 751013, Odisha, India |
|