Citation Rankings
Highly Cited Researchers

Saudi Arabian Oil Company Highly Cited Researchers CitationEngineering & Technology / Chemical Engineering Rankings 2025

Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation IndexUniversities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025

* Total Citation Counts Rankings
Ranking Based On Selection :1
Saudi Arabia
Nasiru Tukur
Chemical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
568
202
0.356
* Total Citation Counts Rankings
Ranking Based On Selection :2
Saudi Arabia
Cemal Ercan
Chemical Engineering
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
500
202
0.404
* Total Citation Counts Rankings
Ranking Based On Selection :3
Saudi Arabia
Ali Aljishi|Ali Jishi, Ali N Jishi, Ali N Aljishi
catalyst
oil upgrading
Catalyst Scale up
FCC catalyst
Hydroprocessing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
158
151
0.956
* Total Citation Counts Rankings
Rankings
861,659
Saudi Arabia
5,070
100
Ranking Based On Selection: 1
Nasiru Tukur
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
568
202
0.356
* Total Citation Counts Rankings
Rankings
901,704
Saudi Arabia
5,354
115
Ranking Based On Selection: 2
Cemal Ercan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
500
202
0.404
* Total Citation Counts Rankings
Rankings
1,370,634
Saudi Arabia
9,217
149
Ranking Based On Selection: 3
Ali Aljishi|Ali Jishi, Ali N Jishi, Ali N Aljishi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
158
151
0.956
catalyst
oil upgrading
Catalyst Scale up
FCC catalyst
Hydroprocessing
* Total Citation Counts Rankings
Rankings
2,112,014
Saudi Arabia
12,982
199
Ranking Based On Selection: 4
Ali Almofleh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15
15
1.000