Diffusion of methane from threecoals ranging in rank from anthracite to HVA bituminous has been studied at initial methane pressures up to about 2.76 MPa (400 psi). Unsteadystate diffusion conditions existed, the methane pressure within the coal particle decreasing with time while the methane pressu
โฆ LIBER โฆ
Methane activation at elevated pressures in quartz
โ Scribed by Alvin H. Weiss; Jeng-shiang Tsaih; Nadka Davidova; Maria Traykova
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 167 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0920-5861
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## Abstract Low density polyethylene and polypropylene are produced at large scale via the Unipol process. In this process catalyst particles are fluidised with monomer gas and grow into polymeric particles up to a size of 1โmm. The process is operated at 20โ25 bar. Pressure plays an important role