99/03144 The composition, structure and properties of coal tars
- Publisher
- Elsevier Science
- Year
- 1999
- Weight
- 201 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0140-6701
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β¦ Synopsis
h ' (CH4) and 870 "C. The promoted catalysts were studied by XRD, TPR and XPS techniques. Ceria suppressed the growth of nickel crystallites, enhancing the stability and performance of the catalyst.
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## Comparable deformation and pressure changes were identified for both models. It is suggested that both the physical and the mathematical models grinding ball is twice as good and corrosion resistance is improved by 29can be applied to investigation of the precursor phenomena of rock burst. 57%.
The characteristics of tars made in a short-path vacuum still (previously termed volatile solids') are compared with those of low-temperature tars previously made.