Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (7): 20260074.doi: 10.7503/cjcu20260074
• Polymer Chemistry • Previous Articles Next Articles
GAO Wenxiao, ZHAO Yuanjin, WANG Xihui, WANG Renhong, HE Aihua(
)
Received:2026-02-07
Online:2026-07-10
Published:2026-05-14
Contact:
HE Aihua
E-mail:ahhe@qust.edu.cn
Supported by:CLC Number:
TrendMD:
GAO Wenxiao, ZHAO Yuanjin, WANG Xihui, WANG Renhong, HE Aihua. Polymerization Kinetics of Propylene Catalyzed by Ziegler-Natta Catalysts——The Influence Mechanism of Diffusion Control on Catalytic Polymerization[J]. Chem. J. Chinese Universities, 2026, 47(7): 20260074.
| Entry | Catalyst | tp/min | CA/(kgP·gTi-1·h-1) | 10-4Mwb | PD b | II(%) c | Fines(%) | Particle size/μm d | Span d | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| D10 | D50 | D90 | |||||||||
| 1 | Cat⁃P | 10 | 568 | 21 | 4.5 | 99.6 | 1.6 | 129 | 192 | 283 | 0.8 |
| 2 | 30 | 292 | 18 | 4.0 | 96.1 | 1.9 | 147 | 218 | 330 | 0.8 | |
| 3 | 60 | 222 | 20 | 4.9 | 99.2 | 0.6 | 166 | 252 | 384 | 0.9 | |
| 4 | 120 | 102 | 18 | 3.2 | 99.1 | 2.6 | 163 | 256 | 473 | 1.2 | |
| 5 | 180 | 76 | 28 | 4.1 | 98.3 | 1.7 | 164 | 250 | 393 | 0.9 | |
| 6 | Cat⁃M1 | 10 | 471 | 26 | 4.7 | 93.8 | 9.7 | 28 | 156 | 310 | 1.8 |
| 7 | 30 | 267 | 25 | 3.7 | 94.5 | 14.8 | 56 | 191 | 340 | 1.5 | |
| 8 | 60 | 153 | 19 | 4.6 | 96.3 | 10.7 | 65 | 215 | 381 | 1.5 | |
| 9 | 120 | 128 | 29 | 3.8 | 96.9 | 15.7 | 23 | 175 | 353 | 1.9 | |
| 10 | 180 | 76 | 22 | 3.4 | 96.1 | 15.7 | 46 | 223 | 413 | 1.6 | |
Table 1 Comparative kinetics of propylene polymerization with Cat-P and Cat-M1 a
| Entry | Catalyst | tp/min | CA/(kgP·gTi-1·h-1) | 10-4Mwb | PD b | II(%) c | Fines(%) | Particle size/μm d | Span d | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| D10 | D50 | D90 | |||||||||
| 1 | Cat⁃P | 10 | 568 | 21 | 4.5 | 99.6 | 1.6 | 129 | 192 | 283 | 0.8 |
| 2 | 30 | 292 | 18 | 4.0 | 96.1 | 1.9 | 147 | 218 | 330 | 0.8 | |
| 3 | 60 | 222 | 20 | 4.9 | 99.2 | 0.6 | 166 | 252 | 384 | 0.9 | |
| 4 | 120 | 102 | 18 | 3.2 | 99.1 | 2.6 | 163 | 256 | 473 | 1.2 | |
| 5 | 180 | 76 | 28 | 4.1 | 98.3 | 1.7 | 164 | 250 | 393 | 0.9 | |
| 6 | Cat⁃M1 | 10 | 471 | 26 | 4.7 | 93.8 | 9.7 | 28 | 156 | 310 | 1.8 |
| 7 | 30 | 267 | 25 | 3.7 | 94.5 | 14.8 | 56 | 191 | 340 | 1.5 | |
| 8 | 60 | 153 | 19 | 4.6 | 96.3 | 10.7 | 65 | 215 | 381 | 1.5 | |
| 9 | 120 | 128 | 29 | 3.8 | 96.9 | 15.7 | 23 | 175 | 353 | 1.9 | |
| 10 | 180 | 76 | 22 | 3.4 | 96.1 | 15.7 | 46 | 223 | 413 | 1.6 | |
| Run | Catalyst | CA/(kgP·gTi-1·h-1) | 10-4Mwb | PD b | II(%) c | Fines(%) | Particle size/μm d | Span d | ||
|---|---|---|---|---|---|---|---|---|---|---|
| D10 | D50 | D90 | ||||||||
| 1 | Cat⁃P | 222 | 20 | 4.9 | 99.2 | 0.6 | 166 | 252 | 384 | 0.9 |
| 2 | Cat⁃M1 | 153 | 19 | 4.6 | 96.3 | 10.7 | 65 | 215 | 381 | 1.5 |
| 3 | Cat⁃M2 | 194 | 27 | 5.6 | 97.9 | 4.2 | 110 | 243 | 425 | 1.3 |
Table 2 The polymerization behaviors of propylene catalyzed by different catalysts a
| Run | Catalyst | CA/(kgP·gTi-1·h-1) | 10-4Mwb | PD b | II(%) c | Fines(%) | Particle size/μm d | Span d | ||
|---|---|---|---|---|---|---|---|---|---|---|
| D10 | D50 | D90 | ||||||||
| 1 | Cat⁃P | 222 | 20 | 4.9 | 99.2 | 0.6 | 166 | 252 | 384 | 0.9 |
| 2 | Cat⁃M1 | 153 | 19 | 4.6 | 96.3 | 10.7 | 65 | 215 | 381 | 1.5 |
| 3 | Cat⁃M2 | 194 | 27 | 5.6 | 97.9 | 4.2 | 110 | 243 | 425 | 1.3 |
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