Upgrading of coal-derived liquids: 4. Characterization of upgraded liquids by field-ionization mass spectrometry
β Scribed by Ryoichi Yoshida; Tadashi Yoshida; Hideo Narita; Yosuke Maekawa
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 448 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
β¦ Synopsis
The mass range and the number-average molecular weight of coal-derived liquids upgraded with various catalysts were determined by field-ionization mass spectrometry (FIMS). The differences in the main components in liquids upgraded with HDS (hydrodesulphurization) and zeolite catalysts were clarified. Upgraded coal-derived liquids hydrogenated and deoxygenated with HDS catalysts contain alkyl-tetralins or indans as the main component. On the other hand, coal-derived liquids upgraded with zeolite catalysts and without catalyst contain alkyl-naphthalenes and/or alkyl-tetralins (or indans) and/or alkyl-phenols as the main component.
π SIMILAR VOLUMES
The present study deals with the mass spectrometric characterization of furanosidic compounds containing a 1,2-O-isopropylidene group using different mass spectrometric techniques: chemical ionization mass spectrometry and liquid secondary ion mass spectrometry together with metastable ion analysis
## Abstract Electrospray (ES) ionization mass spectrometric analysis of CHOβderived recombinant interleukinβ4 (ILβ4) before and after deglycosylation with peptide: __N__βglycosidase F is described. That proved useful not only in deriving the size of the attached carbohydrate components but also in
Field-ionization mass spectrometry, which produces fragmentation-free mass spectra, is being applied to the analysis of coal-liquefaction products. Using a new highly efficient and sturdy field-ionization source, samples of various coal-liquefaction products have been successfully analysed and their