No abstract

No abstract

No abstract

First-order transitions to dilute stage 1 from stages 2 -4 and from mixed stages are observed in Li-graphite compounds in the range 430 -1020 K. The resulting (T,x) phase boundary agrees generally with predictions by Safran and others except for a sharp peak of very stable stage-2 compositions around x -0.4. The commensurability energy does not contribute to this peak since both low-T and high-T phases are disordered.

The color of a 10W 20 hydrotreated base oil did not increase 2 ,-XSTM Union color units in 528 hours, while the color of a highly conventionally refined SAE 10 base oil increased 2 color units in 36 hours.Heavy oils and bright stocks can also be made by hydrotreating deasphalted residua with no other treatment.