-
resins and
asphaltenes. He also
reports arbitrarily defined physical boundaries for
petroleum using carbon-number and
boiling point.
Asphaltenes are today...
-
remaining two fractions,
resins and
asphaltenes, have
polar substituents. The
distinction between the two is that
asphaltenes are
insoluble in an
excess of...
- and oil-sands.[citation needed]
Heavy oil is
asphaltic and
contains asphaltenes and resins. It is "heavy" (dense and viscous) due to the high
ratio of...
- (1995). "New
Methods of
Petroleum Sludge Disposal and Utilization".
Asphaltenes. Boston:
Springer US. pp. 219–235. doi:10.1007/978-1-4757-9293-5_8....
- fed to a
visbreaker can be
considered to be
composed of the following:
Asphaltenes:
large polycyclic molecules that are
suspended in the oil in a coloidal...
- and the
asphaltene compounds.
Maltenes are
characterized by
their lower molecular weight and
their solubility, in
comparison with
asphaltenes.
Using adsorption...
- of
saturated compounds in
asphalt correlates with its
softening point Asphaltenes,
consisting of high
molecular weight phenols and
heterocyclic compounds...
-
various degrees: "paraffins, cycloparaffins, aromatics, olefins, and
asphaltenes as well as
molecules containing sulfur, oxygen,
nitrogen and/or organometals"...
- also
observed novel fungal life
forms which can grow on the
available asphaltenes as a sole
carbon and
energy source. The
microbiological activity is accompanied...
- bitumen. The
primary purpose of the
separation is to
remove contaminants (
asphaltenes, metals) from the feed that
would cause rapid deactivation of catalysts...
