Journal of Chemical Technology and Biotechnology

Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Biotechnology	1999	Q2
Biotechnology	2000	Q2
Biotechnology	2001	Q2
Biotechnology	2002	Q2
Biotechnology	2003	Q2
Biotechnology	2004	Q2
Biotechnology	2005	Q2
Biotechnology	2006	Q2
Biotechnology	2007	Q2
Biotechnology	2008	Q2
Biotechnology	2009	Q2
Biotechnology	2010	Q2
Biotechnology	2011	Q2
Biotechnology	2012	Q1
Biotechnology	2013	Q1
Biotechnology	2014	Q2
Biotechnology	2015	Q2
Biotechnology	2016	Q2
Biotechnology	2017	Q2
Biotechnology	2018	Q2
Biotechnology	2019	Q2
Biotechnology	2020	Q2
Biotechnology	2021	Q2
Biotechnology	2022	Q2
Biotechnology	2023	Q2
Chemical Engineering (miscellaneous)	1999	Q1
Chemical Engineering (miscellaneous)	2000	Q1
Chemical Engineering (miscellaneous)	2001	Q1
Chemical Engineering (miscellaneous)	2002	Q1
Chemical Engineering (miscellaneous)	2003	Q1
Chemical Engineering (miscellaneous)	2004	Q1
Chemical Engineering (miscellaneous)	2005	Q1
Chemical Engineering (miscellaneous)	2006	Q1
Chemical Engineering (miscellaneous)	2007	Q1
Chemical Engineering (miscellaneous)	2008	Q1
Chemical Engineering (miscellaneous)	2009	Q1
Chemical Engineering (miscellaneous)	2010	Q1
Chemical Engineering (miscellaneous)	2011	Q1
Chemical Engineering (miscellaneous)	2012	Q1
Chemical Engineering (miscellaneous)	2013	Q1
Chemical Engineering (miscellaneous)	2014	Q1
Chemical Engineering (miscellaneous)	2015	Q1
Chemical Engineering (miscellaneous)	2016	Q1
Chemical Engineering (miscellaneous)	2017	Q1
Chemical Engineering (miscellaneous)	2018	Q1
Chemical Engineering (miscellaneous)	2019	Q1
Chemical Engineering (miscellaneous)	2020	Q2
Chemical Engineering (miscellaneous)	2021	Q2
Chemical Engineering (miscellaneous)	2022	Q2
Chemical Engineering (miscellaneous)	2023	Q2
Fuel Technology	1999	Q1
Fuel Technology	2000	Q1
Fuel Technology	2001	Q1
Fuel Technology	2002	Q1
Fuel Technology	2003	Q1
Fuel Technology	2004	Q1
Fuel Technology	2005	Q1
Fuel Technology	2006	Q1
Fuel Technology	2007	Q1
Fuel Technology	2008	Q1
Fuel Technology	2009	Q1
Fuel Technology	2010	Q1
Fuel Technology	2011	Q1
Fuel Technology	2012	Q1
Fuel Technology	2013	Q1
Fuel Technology	2014	Q1
Fuel Technology	2015	Q1
Fuel Technology	2016	Q1
Fuel Technology	2017	Q2
Fuel Technology	2018	Q2
Fuel Technology	2019	Q2
Fuel Technology	2020	Q2
Fuel Technology	2021	Q2
Fuel Technology	2022	Q2
Fuel Technology	2023	Q2
Inorganic Chemistry	1999	Q2
Inorganic Chemistry	2000	Q2
Inorganic Chemistry	2001	Q2
Inorganic Chemistry	2002	Q2
Inorganic Chemistry	2003	Q2
Inorganic Chemistry	2004	Q2
Inorganic Chemistry	2005	Q2
Inorganic Chemistry	2006	Q2
Inorganic Chemistry	2007	Q3
Inorganic Chemistry	2008	Q2
Inorganic Chemistry	2009	Q2
Inorganic Chemistry	2010	Q2
Inorganic Chemistry	2011	Q2
Inorganic Chemistry	2012	Q1
Inorganic Chemistry	2013	Q1
Inorganic Chemistry	2014	Q1
Inorganic Chemistry	2015	Q2
Inorganic Chemistry	2016	Q1
Inorganic Chemistry	2017	Q2
Inorganic Chemistry	2018	Q2
Inorganic Chemistry	2019	Q1
Inorganic Chemistry	2020	Q2
Inorganic Chemistry	2021	Q1
Inorganic Chemistry	2022	Q1
Inorganic Chemistry	2023	Q1
Organic Chemistry	1999	Q2
Organic Chemistry	2000	Q2
Organic Chemistry	2001	Q2
Organic Chemistry	2002	Q2
Organic Chemistry	2003	Q2
Organic Chemistry	2004	Q2
Organic Chemistry	2005	Q2
Organic Chemistry	2006	Q2
Organic Chemistry	2007	Q2
Organic Chemistry	2008	Q2
Organic Chemistry	2009	Q2
Organic Chemistry	2010	Q2
Organic Chemistry	2011	Q2
Organic Chemistry	2012	Q1
Organic Chemistry	2013	Q2
Organic Chemistry	2014	Q2
Organic Chemistry	2015	Q2
Organic Chemistry	2016	Q2
Organic Chemistry	2017	Q2
Organic Chemistry	2018	Q2
Organic Chemistry	2019	Q2
Organic Chemistry	2020	Q2
Organic Chemistry	2021	Q2
Organic Chemistry	2022	Q2
Organic Chemistry	2023	Q2
Pollution	1999	Q2
Pollution	2000	Q1
Pollution	2001	Q2
Pollution	2002	Q2
Pollution	2003	Q2
Pollution	2004	Q2
Pollution	2005	Q2
Pollution	2006	Q2
Pollution	2007	Q2
Pollution	2008	Q2
Pollution	2009	Q2
Pollution	2010	Q1
Pollution	2011	Q1
Pollution	2012	Q1
Pollution	2013	Q1
Pollution	2014	Q1
Pollution	2015	Q2
Pollution	2016	Q2
Pollution	2017	Q2
Pollution	2018	Q2
Pollution	2019	Q2
Pollution	2020	Q2
Pollution	2021	Q2
Pollution	2022	Q2
Pollution	2023	Q2
Renewable Energy, Sustainability and the Environment	1999	Q1
Renewable Energy, Sustainability and the Environment	2000	Q1
Renewable Energy, Sustainability and the Environment	2001	Q1
Renewable Energy, Sustainability and the Environment	2002	Q1
Renewable Energy, Sustainability and the Environment	2003	Q2
Renewable Energy, Sustainability and the Environment	2004	Q1
Renewable Energy, Sustainability and the Environment	2005	Q2
Renewable Energy, Sustainability and the Environment	2006	Q2
Renewable Energy, Sustainability and the Environment	2007	Q2
Renewable Energy, Sustainability and the Environment	2008	Q1
Renewable Energy, Sustainability and the Environment	2009	Q2
Renewable Energy, Sustainability and the Environment	2010	Q2
Renewable Energy, Sustainability and the Environment	2011	Q1
Renewable Energy, Sustainability and the Environment	2012	Q1
Renewable Energy, Sustainability and the Environment	2013	Q2
Renewable Energy, Sustainability and the Environment	2014	Q2
Renewable Energy, Sustainability and the Environment	2015	Q2
Renewable Energy, Sustainability and the Environment	2016	Q2
Renewable Energy, Sustainability and the Environment	2017	Q2
Renewable Energy, Sustainability and the Environment	2018	Q2
Renewable Energy, Sustainability and the Environment	2019	Q2
Renewable Energy, Sustainability and the Environment	2020	Q2
Renewable Energy, Sustainability and the Environment	2021	Q2
Renewable Energy, Sustainability and the Environment	2022	Q2
Renewable Energy, Sustainability and the Environment	2023	Q2
Waste Management and Disposal	1999	Q1
Waste Management and Disposal	2000	Q1
Waste Management and Disposal	2001	Q1
Waste Management and Disposal	2002	Q1
Waste Management and Disposal	2003	Q2
Waste Management and Disposal	2004	Q2
Waste Management and Disposal	2005	Q1
Waste Management and Disposal	2006	Q2
Waste Management and Disposal	2007	Q1
Waste Management and Disposal	2008	Q1
Waste Management and Disposal	2009	Q1
Waste Management and Disposal	2010	Q1
Waste Management and Disposal	2011	Q1
Waste Management and Disposal	2012	Q1
Waste Management and Disposal	2013	Q1
Waste Management and Disposal	2014	Q1
Waste Management and Disposal	2015	Q1
Waste Management and Disposal	2016	Q1
Waste Management and Disposal	2017	Q2
Waste Management and Disposal	2018	Q2
Waste Management and Disposal	2019	Q2
Waste Management and Disposal	2020	Q2
Waste Management and Disposal	2021	Q2
Waste Management and Disposal	2022	Q2
Waste Management and Disposal	2023	Q2

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
1999	0.637
2000	0.628
2001	0.637
2002	0.699
2003	0.556
2004	0.645
2005	0.599
2006	0.674
2007	0.639
2008	0.808
2009	0.842
2010	0.892
2011	0.981
2012	1.108
2013	1.028
2014	0.938
2015	0.795
2016	0.854
2017	0.766
2018	0.715
2019	0.661
2020	0.640
2021	0.625
2022	0.599
2023	0.624

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
1999	166
2000	148
2001	168
2002	176
2003	182
2004	193
2005	185
2006	253
2007	146
2008	224
2009	256
2010	215
2011	205
2012	222
2013	276
2014	233
2015	250
2016	344
2017	321
2018	381
2019	397
2020	329
2021	329
2022	330
2023	284

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	1999	1.069
Cites / Doc. (4 years)	2000	1.118
Cites / Doc. (4 years)	2001	1.247
Cites / Doc. (4 years)	2002	1.263
Cites / Doc. (4 years)	2003	1.243
Cites / Doc. (4 years)	2004	1.184
Cites / Doc. (4 years)	2005	1.363
Cites / Doc. (4 years)	2006	1.557
Cites / Doc. (4 years)	2007	1.460
Cites / Doc. (4 years)	2008	1.915
Cites / Doc. (4 years)	2009	2.186
Cites / Doc. (4 years)	2010	2.322
Cites / Doc. (4 years)	2011	2.673
Cites / Doc. (4 years)	2012	2.794
Cites / Doc. (4 years)	2013	3.041
Cites / Doc. (4 years)	2014	3.019
Cites / Doc. (4 years)	2015	2.933
Cites / Doc. (4 years)	2016	3.183
Cites / Doc. (4 years)	2017	3.032
Cites / Doc. (4 years)	2018	3.087
Cites / Doc. (4 years)	2019	3.050
Cites / Doc. (4 years)	2020	3.107
Cites / Doc. (4 years)	2021	3.568
Cites / Doc. (4 years)	2022	3.651
Cites / Doc. (4 years)	2023	3.500
Cites / Doc. (3 years)	1999	1.069
Cites / Doc. (3 years)	2000	1.124
Cites / Doc. (3 years)	2001	1.111
Cites / Doc. (3 years)	2002	1.239
Cites / Doc. (3 years)	2003	1.126
Cites / Doc. (3 years)	2004	1.190
Cites / Doc. (3 years)	2005	1.274
Cites / Doc. (3 years)	2006	1.496
Cites / Doc. (3 years)	2007	1.433
Cites / Doc. (3 years)	2008	1.902
Cites / Doc. (3 years)	2009	2.108
Cites / Doc. (3 years)	2010	2.313
Cites / Doc. (3 years)	2011	2.521
Cites / Doc. (3 years)	2012	2.907
Cites / Doc. (3 years)	2013	3.051
Cites / Doc. (3 years)	2014	2.770
Cites / Doc. (3 years)	2015	2.837
Cites / Doc. (3 years)	2016	3.215
Cites / Doc. (3 years)	2017	2.981
Cites / Doc. (3 years)	2018	2.981
Cites / Doc. (3 years)	2019	3.001
Cites / Doc. (3 years)	2020	3.089
Cites / Doc. (3 years)	2021	3.624
Cites / Doc. (3 years)	2022	3.723
Cites / Doc. (3 years)	2023	3.555
Cites / Doc. (2 years)	1999	1.003
Cites / Doc. (2 years)	2000	0.960
Cites / Doc. (2 years)	2001	0.984
Cites / Doc. (2 years)	2002	1.066
Cites / Doc. (2 years)	2003	1.093
Cites / Doc. (2 years)	2004	1.067
Cites / Doc. (2 years)	2005	1.149
Cites / Doc. (2 years)	2006	1.513
Cites / Doc. (2 years)	2007	1.429
Cites / Doc. (2 years)	2008	1.807
Cites / Doc. (2 years)	2009	2.103
Cites / Doc. (2 years)	2010	2.019
Cites / Doc. (2 years)	2011	2.490
Cites / Doc. (2 years)	2012	2.867
Cites / Doc. (2 years)	2013	2.803
Cites / Doc. (2 years)	2014	2.538
Cites / Doc. (2 years)	2015	2.888
Cites / Doc. (2 years)	2016	3.130
Cites / Doc. (2 years)	2017	2.778
Cites / Doc. (2 years)	2018	2.832
Cites / Doc. (2 years)	2019	2.926
Cites / Doc. (2 years)	2020	3.094
Cites / Doc. (2 years)	2021	3.715
Cites / Doc. (2 years)	2022	3.669
Cites / Doc. (2 years)	2023	3.288

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	1999	53
Self Cites	2000	52
Self Cites	2001	56
Self Cites	2002	44
Self Cites	2003	43
Self Cites	2004	45
Self Cites	2005	58
Self Cites	2006	68
Self Cites	2007	64
Self Cites	2008	68
Self Cites	2009	99
Self Cites	2010	82
Self Cites	2011	104
Self Cites	2012	130
Self Cites	2013	104
Self Cites	2014	102
Self Cites	2015	115
Self Cites	2016	118
Self Cites	2017	118
Self Cites	2018	168
Self Cites	2019	195
Self Cites	2020	169
Self Cites	2021	127
Self Cites	2022	110
Self Cites	2023	89
Total Cites	1999	528
Total Cites	2000	561
Total Cites	2001	522
Total Cites	2002	597
Total Cites	2003	554
Total Cites	2004	626
Total Cites	2005	702
Total Cites	2006	838
Total Cites	2007	904
Total Cites	2008	1111
Total Cites	2009	1313
Total Cites	2010	1448
Total Cites	2011	1752
Total Cites	2012	1965
Total Cites	2013	1959
Total Cites	2014	1947
Total Cites	2015	2074
Total Cites	2016	2440
Total Cites	2017	2465
Total Cites	2018	2728
Total Cites	2019	3139
Total Cites	2020	3395
Total Cites	2021	4012
Total Cites	2022	3928
Total Cites	2023	3512

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	1999	0.962
External Cites per document	2000	1.020
External Cites per document	2001	0.991
External Cites per document	2002	1.147
External Cites per document	2003	1.039
External Cites per document	2004	1.105
External Cites per document	2005	1.169
External Cites per document	2006	1.375
External Cites per document	2007	1.331
External Cites per document	2008	1.786
External Cites per document	2009	1.949
External Cites per document	2010	2.182
External Cites per document	2011	2.371
External Cites per document	2012	2.714
External Cites per document	2013	2.889
External Cites per document	2014	2.624
External Cites per document	2015	2.680
External Cites per document	2016	3.059
External Cites per document	2017	2.838
External Cites per document	2018	2.798
External Cites per document	2019	2.815
External Cites per document	2020	2.935
External Cites per document	2021	3.509
External Cites per document	2022	3.619
External Cites per document	2023	3.465
Cites per document	1999	1.069
Cites per document	2000	1.124
Cites per document	2001	1.111
Cites per document	2002	1.239
Cites per document	2003	1.126
Cites per document	2004	1.190
Cites per document	2005	1.274
Cites per document	2006	1.496
Cites per document	2007	1.433
Cites per document	2008	1.902
Cites per document	2009	2.108
Cites per document	2010	2.313
Cites per document	2011	2.521
Cites per document	2012	2.907
Cites per document	2013	3.051
Cites per document	2014	2.770
Cites per document	2015	2.837
Cites per document	2016	3.215
Cites per document	2017	2.981
Cites per document	2018	2.981
Cites per document	2019	3.001
Cites per document	2020	3.089
Cites per document	2021	3.624
Cites per document	2022	3.723
Cites per document	2023	3.555

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
1999	9.64
2000	17.57
2001	13.69
2002	17.05
2003	14.84
2004	20.73
2005	20.00
2006	22.13
2007	16.44
2008	16.07
2009	14.84
2010	13.95
2011	19.02
2012	20.72
2013	19.57
2014	22.32
2015	20.00
2016	22.97
2017	26.48
2018	26.51
2019	24.69
2020	20.36
2021	25.23
2022	24.85
2023	19.72

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	1999	2
Non-citable documents	2000	4
Non-citable documents	2001	6
Non-citable documents	2002	8
Non-citable documents	2003	6
Non-citable documents	2004	5
Non-citable documents	2005	3
Non-citable documents	2006	3
Non-citable documents	2007	9
Non-citable documents	2008	12
Non-citable documents	2009	18
Non-citable documents	2010	12
Non-citable documents	2011	14
Non-citable documents	2012	12
Non-citable documents	2013	14
Non-citable documents	2014	12
Non-citable documents	2015	11
Non-citable documents	2016	11
Non-citable documents	2017	12
Non-citable documents	2018	12
Non-citable documents	2019	11
Non-citable documents	2020	13
Non-citable documents	2021	17
Non-citable documents	2022	16
Non-citable documents	2023	17
Citable documents	1999	492
Citable documents	2000	495
Citable documents	2001	464
Citable documents	2002	474
Citable documents	2003	486
Citable documents	2004	521
Citable documents	2005	548
Citable documents	2006	557
Citable documents	2007	622
Citable documents	2008	572
Citable documents	2009	605
Citable documents	2010	614
Citable documents	2011	681
Citable documents	2012	664
Citable documents	2013	628
Citable documents	2014	691
Citable documents	2015	720
Citable documents	2016	748
Citable documents	2017	815
Citable documents	2018	903
Citable documents	2019	1035
Citable documents	2020	1086
Citable documents	2021	1090
Citable documents	2022	1039
Citable documents	2023	971

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	1999	241
Uncited documents	2000	251
Uncited documents	2001	221
Uncited documents	2002	198
Uncited documents	2003	224
Uncited documents	2004	239
Uncited documents	2005	221
Uncited documents	2006	199
Uncited documents	2007	230
Uncited documents	2008	195
Uncited documents	2009	172
Uncited documents	2010	184
Uncited documents	2011	163
Uncited documents	2012	138
Uncited documents	2013	136
Uncited documents	2014	142
Uncited documents	2015	158
Uncited documents	2016	145
Uncited documents	2017	144
Uncited documents	2018	165
Uncited documents	2019	192
Uncited documents	2020	174
Uncited documents	2021	161
Uncited documents	2022	176
Uncited documents	2023	170
Cited documents	1999	253
Cited documents	2000	248
Cited documents	2001	249
Cited documents	2002	284
Cited documents	2003	268
Cited documents	2004	287
Cited documents	2005	330
Cited documents	2006	361
Cited documents	2007	401
Cited documents	2008	389
Cited documents	2009	451
Cited documents	2010	442
Cited documents	2011	532
Cited documents	2012	538
Cited documents	2013	506
Cited documents	2014	561
Cited documents	2015	573
Cited documents	2016	614
Cited documents	2017	683
Cited documents	2018	750
Cited documents	2019	854
Cited documents	2020	925
Cited documents	2021	946
Cited documents	2022	879
Cited documents	2023	818

% Female Authors

Evolution of the percentage of female authors.

Year	Female Percent
1999	29.16
2000	24.08
2001	26.18
2002	25.06
2003	24.68
2004	27.22
2005	29.00
2006	31.37
2007	30.54
2008	37.50
2009	32.93
2010	37.62
2011	34.15
2012	33.63
2013	36.20
2014	40.56
2015	36.88
2016	37.47
2017	36.89
2018	40.13
2019	39.90
2020	40.73
2021	41.77
2022	39.95
2023	41.47

Documents cited by public policy (Overton)

Evolution of the number of documents cited by public policy documents according to Overton database.

Documents	Year	Value
Overton	1999	0
Overton	2000	0
Overton	2001	9
Overton	2002	2
Overton	2003	5
Overton	2004	1
Overton	2005	8
Overton	2006	9
Overton	2007	12
Overton	2008	3
Overton	2009	6
Overton	2010	9
Overton	2011	4
Overton	2012	14
Overton	2013	7
Overton	2014	6
Overton	2015	5
Overton	2016	11
Overton	2017	5
Overton	2018	5
Overton	2019	3
Overton	2020	1
Overton	2021	1
Overton	2022	1
Overton	2023	0