Engineering & Materials Science
Crude oil
100%
Catalysts
87%
Coke
86%
Oils
56%
Hydrogen
43%
Nanoparticles
43%
Application programming interfaces (API)
43%
Viscosity
42%
Gravitation
40%
Heavy oil production
34%
Transition metals
32%
Cyclohexane
32%
Bacilli
32%
Air
31%
Metals
30%
Palladium
29%
Iron oxides
28%
Alumina
26%
Sulfur
23%
Zeolites
21%
Steam
18%
Iron
18%
Catalyst deactivation
15%
Gases
15%
Metal nanoparticles
15%
Coking
13%
Aluminum oxide
13%
Boiling point
12%
Refining
11%
Nitrogen
11%
Batch reactors
10%
Temperature
9%
Asphaltenes
9%
Naphthas
9%
Hot Temperature
8%
Costs
7%
Gasoline
6%
Carbon
6%
Scanning electron microscopy
5%
Hydrogenation
5%
Sulfides
5%
Fouling
5%
Earth & Environmental Sciences
heavy oil
73%
catalyst
56%
crude oil
40%
oil
33%
bitumen
30%
in situ
30%
gravity
27%
viscosity
22%
coke
22%
air
21%
comparative study
20%
hydrogen
17%
methane
16%
boiling point
16%
sulfur
14%
surface area
13%
asphaltene
11%
gas
11%
nitrogen
10%
hydrodesulphurisation
10%
metal
9%
transport cost
7%
regeneration
7%
environmental footprint
7%
removal
6%
residence time
6%
effect
6%
combustion gas
6%
limiting factor
5%
refining
5%
gas mixture
5%
temperature
5%
Chemistry
Catalyst
42%
Gravity
38%
Bitumen
34%
Hydrogen Donor
32%
Palladium Nanoparticle
26%
Thermal Cracking
24%
Hydrogen
22%
Petroleum Recovery
21%
Iron Oxide
20%
Petroleum
20%
Cyclohexane
20%
Nitrogen
18%
Nanoparticle
17%
Pressure
16%
Gas
16%
Transition Element
16%
Metal
15%
Boiling Point
12%
Reaction Yield
11%
Desulfurization
11%
Environment
11%
Reduction
10%
Batch Reactor
9%
Time
9%
Product Distribution
9%
Formate
9%
Metal Nanoparticle
8%
Flow
7%
Strain
6%
Catalytic Pyrolysis
6%
Reaction Pressure
5%
Coking
5%
Scanning Transmission Electron Microscopy
5%