Branching structure of diesel and lubricant base oils prepared by isomerization/hydrocracking of fischer - tropsch waxes and a-olefins (Record no. 169648)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02584nab a2200205 4500 |
| 008 - CÓDIGOS DE INFORMACIÓN DE LONGITUD FIJA - INFORMACIÓN GENERAL | |
| Campo de control de longitud fija | 260224s2009 xxu |
| 245 00 - TITULO | |
| Título | Branching structure of diesel and lubricant base oils prepared by isomerization/hydrocracking of fischer - tropsch waxes and a-olefins |
| 260 ## - PUBLICACION, DISTRIBUCION, ETC | |
| Lugar de publicación, distribución, etc. | |
| Nombre de publicador, distribuidor, etc. | |
| Fecha de publicación, distribución, etc. | ene. 2009 |
| 270 ## - FECHA DE CARGA | |
| Fecha de carga | 15/05/2009 ; 22/04/2009 |
| 300 ## - DESCRIPCION FISICA | |
| Otra extensión | 5 p. ; 513-518 |
| 520 ## - RESUMEN, ETC | |
| Resumen | Transcripción del resúmen publicado por el autor: Lubricant base oils were prepared from two Fischer-Tropsch (FT) waxes and two a-olefins with different carbon number distributions under several isomerization/hydrocracking conditions. The molecular structures of the resulting oils were investigated using 13C NMR analysis to determine the location and length of branches. Peak areas assigned to the CH carbons were divided into eight groups and correlated with the progress of the isomerization reaction. Each group showed good correlation with the density of branching, which was expressed as the ratio of the average branching number (ABN) to the average carbon number (ACN). This trend was independent of the feedstock used and the reaction conditions. The probability of methyl branching at a carbon atom depended on its location from the terminal carbon; that is, in order of decreasing probability, the carbon location is second > third > fourth, and so forth, and the probability of the seventh and eighth or inner carbon atoms was almost equal. A trend of increasing proportion of branches located at the second carbon was observed. Diesel oils were also obtained by isomerization/hydrocracking of FT waxes, and the most likely position of methyl branching was the second carbon from the terminal carbon. Branching at the second carbon showed a decreasing trend with increasing density of branching in diesel oil, whereas that in lubricant base oil showed an increasing trend. The present work demonstrated that the position and length of the branches in lubricant base oils, and diesel oils prepared by isomerization/hydrocracking of FT waxes and a-olefins, are determined by the density of branching, thus supporting previous findings that viscosity properties of lubricant oils, such as the kinematic viscosity and viscosity index, can be expressed using only the ACN and ABN. |
| 773 0# - CORRECCIÓN | |
| Título | Energy & fuels |
| Partes relacionadas | 23 |
| 942 ## - DESC. DE MATERIAL | |
| Tipo de item KOHA | Artículo de Revista |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Kobayashi, Manabu |
| 9 (RLIN) | 41011 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Saitoh, Masayuki |
| 9 (RLIN) | 41012 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Togawa, Seiji |
| 9 (RLIN) | 41013 |
| 856 ## - LINK | |
| Link | <a href="http://pubs.acs.org/doi/full/10.1021/ef800530p">http://pubs.acs.org/doi/full/10.1021/ef800530p</a> |
| Biblioteca propietaria | Biblioteca actual | Fecha de adquisición | Inventario | Total de préstamos | Inventario | Fecha de carga | Tipo de item KOHA |
|---|---|---|---|---|---|---|---|
| Biblioteca virtual | Biblioteca virtual | 05/03/2026 | 200044453 | 200044453 | 05/03/2026 | Artículo de Revista |
