Top keywords in petroleum 1–100 of 7,555 results
Keywords Publications Citations  
1
Porous Media 1120 7001
2
Kinetics 1064 5141
3
Fly Ash 467 4315
4
Porous Medium 706 4242
5
Diesel Fuel 349 3889
6
Nitrogen 799 3643
7
High Temperature 681 3048
8
Methane 986 2872
9
Experimental Data 701 2828
10
Particle Size 430 2651
11
Surface Area 365 2622
12
Carbon Dioxide 487 2556
13
Low Temperature 525 2527
14
Operant Conditioning 359 2299
15
Methyl Ester 141 2286
16
Vegetable Oil 126 2259
17
Diesel Engine 249 2218
18
Natural Gas 2007 2116
19
Three Dimensional 778 2111
20
Pulverized Coal 254 2003
21
Reaction Time 206 1973
22
Trace Element 291 1965
23
Crude Oil 874 1939
24
Residence Time 289 1911
25
Two Phase Flow 275 1905
26
Numerical Simulation 391 1888
27
Fluidized Bed 330 1875
28
Power Plant 257 1865
29
Activated Carbon 335 1833
30
Thermodynamics 377 1814
31
Mathematical Model 528 1810
32
Activation Energy 293 1758
33
Chemical Composition 390 1658
34
Steady State 300 1634
35
Heat Transfer 315 1631
36
Potassium 311 1611
37
Capillary Pressure 289 1598
38
Relative Permeability 281 1568
39
Fluid Flow 739 1529
40
Flow Rate 350 1513
41
First Order 250 1501
42
Large Scale 402 1483
43
Iron 559 1472
44
Fossil Fuels 1157 1394
45
Experimental Study 326 1369
46
High Pressure 351 1299
47
Atmospheric Pressure 226 1269
48
Microstructures 227 1260
49
Boundary Condition 247 1184
50
Pore Structure 182 1179
51
Analytic Solution 298 1175
52
Fatty Acid 100 1169
53
Silica 317 1164
54
Free Fatty Acid 52 1147
55
Reaction Rate 197 1143
56
Indexation 312 1127
57
Catalytic Activity 298 1097
58
Carbon Monoxide 192 1080
59
thermogravimetric analysis 142 1075
60
Heterogeneous Porous Media 92 1041
61
Organic Matter 650 1033
62
Mass Transfer 281 1032
63
Moisture Content 158 1005
64
Hydraulic Conductance 104 1004
65
Multiphase Flow 167 1001
66
Exhaust Emissions 85 993
67
Nickel 271 988
68
Physical Properties 364 983
69
Coal Fly Ash 97 976
70
Nitrogen Oxide 132 974
71
Network Model 129 972
72
Gas Production 296 966
73
X Ray Diffraction 281 961
74
Fluidized Bed Combustion 140 945
75
Power Generation 117 940
76
No. X 134 931
77
Soybean Oil 60 930
78
Kinetic Parameter 175 913
79
Gas Flow 188 900
80
co2 capture 84 892
81
Numerical Model 261 878
82
Coal-fired Power Plant 105 876
83
Gas Chromatography 234 873
84
Alternative Fuel 107 871
85
Particulate Matter 88 869
86
Kinetic Model 237 866
87
Raw Materials 121 849
88
Biomass Gasification 79 846
89
Water Content 140 845
90
Scanning Electron Microscopy 219 845
91
Molecular Weight 226 839
92
Engine Performance 80 839
93
Thermogravimetry 111 831
94
Fluidized Bed Reactor 117 827
95
Heavy Metal 120 800
96
Fatty Acid Methyl Ester 67 795
97
Particle Size Distribution 132 790
98
Organic Compound 716 786
99
Functional Group 163 785
100
Polycyclic Aromatic Hydrocarbon 110 784