Citation Rankings
Highly Cited Researchers
Engineering & Technology / Chemical Engineering Highly Cited Researchers 22 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Biomass energy
catalysis
gasification
adsorption
environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,372
5,980
0.447
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Thermochemical Conversion
Catalysis
Energy and Fuel
Biomass
Carbon Materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,739
3,218
0.861
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Coal Liquefaction
Biomass Energy
Pyrolysis
Supercritical Extraction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,597
2,357
0.655
* Total Citation Counts Rankings
Ranking Based On Selection: 4
membrane
heterogeneous catalyst
methane conversion
wastewater and natural gas treatment
oil and gas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,652
2,316
0.873
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Chemical Engineering
Particle processing
non destructive testing
separation technology
Renewable energy and environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,828
1,041
0.569
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Green Engineering
Energy and Environment
Biomass conversion
Coal cleaning technology
Waste Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,346
620
0.461
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Enzyme Technology
Enzyme immobilization
Catalyst
Carbon Utilization
Bioactive Component
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,096
690
0.630
* Total Citation Counts Rankings
Ranking Based On Selection: 8
wastewater treatment
energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
987
730
0.740
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Ultrafiltration
Photocatalyst
Wastewater Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
967
547
0.566
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Supercritical Fluids
Pharmaceuticals
Natural Products
Medicinal Plants
Microwave
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
904
602
0.666
* Total Citation Counts Rankings
Ranking Based On Selection: 11
bioprocess
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
894
466
0.521
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Supercritical Fluid Extraction
Pressurised Liquid Extraction and Cyclodextrin Encapsulation Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
817
431
0.528
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Membrane separation
textile wastewater
surfactant colloids
coagulation flocculation
micellar enhanced ultrafiltration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
692
345
0.499
* Total Citation Counts Rankings
Ranking Based On Selection: 14
civil
environment and chemical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
476
458
0.962
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Advanced Material
Solid Catalyst
Renewable Energy
Chemical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
460
208
0.452
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Oleochemicals
membrane separation
separation and purification
chemical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
216
129
0.597
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Chemical Engineering
Polymer Blend
Membrane Separation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
169
112
0.663
* Total Citation Counts Rankings
Ranking Based On Selection: 18
chemical engineering
nanotechnology
adsorption dye
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
159
125
0.786
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Separation Technology
Supercritical Fluid Extraction
Wastewater Treatment Engineering
Chemical Engineering
Natural Product
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
130
121
0.931
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Chemical Engineering
Renewable Energy
Waste Water
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105
99
0.943
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Renewable Energy
Fuel Cell
Process Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Thermodynamics
Fluid Mechanics
Process Control
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
* Total Citation Counts Rankings
Rankings
70,949
173
3
Ranking Based On Selection: 1
Asadullah Mohammad
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,372
5,980
0.447
Biomass energy
catalysis
gasification
adsorption
environment
* Total Citation Counts Rankings
Rankings
272,690
1,246
48
Ranking Based On Selection: 2
Syed Shatir A Syed Hassan
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,739
3,218
0.861
Thermochemical Conversion
Catalysis
Energy and Fuel
Biomass
Carbon Materials
* Total Citation Counts Rankings
Rankings
282,059
1,318
51
Ranking Based On Selection: 3
Khudzir Ismail
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,597
2,357
0.655
Coal Liquefaction
Biomass Energy
Pyrolysis
Supercritical Extraction
* Total Citation Counts Rankings
Rankings
362,916
1,952
72
Ranking Based On Selection: 4
Nur Hidayati Othman
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,652
2,316
0.873
membrane
heterogeneous catalyst
methane conversion
wastewater and natural gas treatment
oil and gas
* Total Citation Counts Rankings
Rankings
476,860
2,983
130
Ranking Based On Selection: 5
Norazah Abd Rahman
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,828
1,041
0.569
Chemical Engineering
Particle processing
non destructive testing
separation technology
Renewable energy and environment
* Total Citation Counts Rankings
Rankings
580,851
4,030
208
Ranking Based On Selection: 6
Azil Bahari Alias
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,346
620
0.461
Green Engineering
Energy and Environment
Biomass conversion
Coal cleaning technology
Waste Management
* Total Citation Counts Rankings
Rankings
653,796
4,813
272
Ranking Based On Selection: 7
Fazlena Hamzah
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,096
690
0.630
Enzyme Technology
Enzyme immobilization
Catalyst
Carbon Utilization
Bioactive Component
* Total Citation Counts Rankings
Rankings
691,258
5,222
308
Ranking Based On Selection: 8
Juferi Idris
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
987
730
0.740
wastewater treatment
energy
* Total Citation Counts Rankings
Rankings
698,742
5,312
318
Ranking Based On Selection: 9
Lim Ying Pei
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
967
547
0.566
Ultrafiltration
Photocatalyst
Wastewater Treatment
* Total Citation Counts Rankings
Rankings
722,979
5,590
350
Ranking Based On Selection: 10
Ana Najwa Mustapa
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
904
602
0.666
Supercritical Fluids
Pharmaceuticals
Natural Products
Medicinal Plants
Microwave
* Total Citation Counts Rankings
Rankings
726,946
5,630
354
Ranking Based On Selection: 11
Jailani Salihon
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
894
466
0.521
* Total Citation Counts Rankings
Rankings
758,887
5,959
404
Ranking Based On Selection: 12
Zaibunnisa Abdul Haiyee
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
817
431
0.528
Supercritical Fluid Extraction
Pressurised Liquid Extraction and Cyclodextrin Encapsulation Technology
* Total Citation Counts Rankings
Rankings
816,139
6,502
467
Ranking Based On Selection: 13
Puasa SW
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
692
345
0.499
Membrane separation
textile wastewater
surfactant colloids
coagulation flocculation
micellar enhanced ultrafiltration
* Total Citation Counts Rankings
Rankings
949,474
7,734
674
Ranking Based On Selection: 14
Norhafezah Kasmuri
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
476
458
0.962
civil
environment and chemical engineering
* Total Citation Counts Rankings
Rankings
963,926
7,888
707
Ranking Based On Selection: 15
Noraini Razali
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
460
208
0.452
Advanced Material
Solid Catalyst
Renewable Energy
Chemical Engineering
* Total Citation Counts Rankings
Rankings
1,278,837
11,573
1,640
Ranking Based On Selection: 16
Norin Zamiah Kassim Shaari
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
216
129
0.597
Oleochemicals
membrane separation
separation and purification
chemical engineering
* Total Citation Counts Rankings
Rankings
1,385,024
12,883
2,001
Ranking Based On Selection: 17
Nur Azrini Ramlee
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
169
112
0.663
Chemical Engineering
Polymer Blend
Membrane Separation
* Total Citation Counts Rankings
Rankings
1,411,204
13,211
2,108
Ranking Based On Selection: 18
Norashikin Ahmad Zamanhuri
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
159
125
0.786
chemical engineering
nanotechnology
adsorption dye
* Total Citation Counts Rankings
Rankings
1,497,695
14,337
2,411
Ranking Based On Selection: 19
Nur Ain Mohd Zainuddin
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
130
121
0.931
Separation Technology
Supercritical Fluid Extraction
Wastewater Treatment Engineering
Chemical Engineering
Natural Product
* Total Citation Counts Rankings
Rankings
1,586,765
15,442
2,748
Ranking Based On Selection: 20
Omar Syah Jehan Elham
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105
99
0.943
Chemical Engineering
Renewable Energy
Waste Water
* Total Citation Counts Rankings
Rankings
2,328,043
22,696
4,046
Ranking Based On Selection: 21
Lydia Dundun Francis
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Renewable Energy
Fuel Cell
Process Engineering
* Total Citation Counts Rankings
Rankings
2,361,061
22,974
4,069
Ranking Based On Selection: 22
Azmi Mahmood
Universiti Teknologi MARA
Shah Alam, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
Thermodynamics
Fluid Mechanics
Process Control