Preparation for Pt-Loaded Zeolite Catalysts Using w/o Microemulsion and Their Hydrocracking Behaviors on Fischer-Tropsch Product
Abstract
:1. Introduction
2. Results and Discussion
2.1. Effect of Immobilization Time
Particle forming agent/reducing agent | Pt particle type | ||
---|---|---|---|
Name | Rational formula | Name | Rational formula |
Hydrazine | N2H4 | Pt metal | - |
TEAC | (C2H5)4N+Cl− | (TEA)2PtCl6 | [(C2H5)4N]2PtCl6 |
TPAB | (C3H7)4N+Br− | (TPA)2PtCl6 | [(C3H7)4N]2PtCl6 |
HTAB | C6H13(CH3)3N+Br− | (HTA)2PtCl6 | [C6H13(CH3)3N]2PtCl6 |
CTAC | C16H33(CH3)3N+Cl− | (CTA)2PtCl6 | [C16H33(CH3)3N]2PtCl6 |
2.2. Pore Structure and Acid Amount of Pt-Loaded Zeolite Catalysts
# | Catalyst | Remarks | BET surface area | Pore volume | Average pore diameter | Micropore area | Mesopore area |
---|---|---|---|---|---|---|---|
m2·g−1 | cm3·g−1 | nm | m2·g−1 | m2·g−1 | |||
A | M-Pt(TEAC)/940HOA | TEAC/Pt = 10 | 598 | 137 | 2.1 | 792 | 68 |
B | M-Pt(CTAC)/940HOA | CTAC/Pt = 10 | 590 | 135 | 2.1 | 772 | 68 |
C | M-Pt(TPAB)/940HOA | TPAB/Pt = 10 | 598 | 138 | 2.1 | 782 | 68 |
D | M-Pt(HTAB)/940HOA | HTAB/Pt = 10 | 608 | 140 | 2.2 | 795 | 68 |
E | M-Pt(N2H4)/940HOA | N2H4/Pt = 80 | 605 | 139 | 2.1 | 791 | 66 |
F | M-Pt(TEAC)/940HOA | TEAC/Pt = 2 | 610 | 140 | 2.2 | 796 | 67 |
G | M-Pt(TEAC)/940HOA | TEAC/Pt = 5 | 644 | 148 | 2.1 | 840 | 72 |
H | M-Pt(TEAC)/940HOA | TEAC/Pt = 20 | 617 | 142 | 2.2 | 804 | 69 |
I | M-Pt(TEAC)/940HOA | TEAC/Pt = 40 | 587 | 135 | 2.1 | 763 | 66 |
J | I-Pt/940HOA | Impregnation | 622 | 143 | 2.2 | 807 | 67 |
# | Catalyst | Remarks | Acid amount a | Weak b | Medium c | Strong d |
---|---|---|---|---|---|---|
mmol·g−1 | mmol·g−1 | |||||
A | M-Pt(TEAC)/940HOA | TEAC/Pt = 10 | 0.74 | 0.32 | 0.34 | 0.08 |
B | M-Pt(CTAC)/940HOA | CTAC/Pt = 10 | 0.77 | 0.36 | 0.35 | 0.05 |
C | M-Pt(TPAB)/940HOA | TPAB/Pt = 10 | 0.75 | 0.37 | 0.35 | 0.03 |
D | M-Pt(HTAB)/940HOA | HTAB/Pt = 10 | 0.68 | 0.33 | 0.31 | 0.05 |
E | M-Pt(N2H4)/940HOA | N2H4/Pt = 80 | 0.74 | 0.37 | 0.34 | 0.03 |
F | M-Pt(TEAC)/940HOA | TEAC/Pt = 2 | 0.74 | 0.33 | 0.33 | 0.08 |
G | M-Pt(TEAC)/940HOA | TEAC/Pt = 5 | 0.70 | 0.34 | 0.31 | 0.04 |
H | M-Pt(TEAC)/940HOA | TEAC/Pt = 20 | 0.72 | 0.34 | 0.32 | 0.06 |
I | M-Pt(TEAC)/940HOA | TEAC/Pt = 40 | 0.77 | 0.35 | 0.34 | 0.08 |
J | I-Pt/940HOA | Impregnation | 0.69 | 0.34 | 0.31 | 0.04 |
2.3. Effect of Type of Complex-Forming Agents
2.4. Effect of Complex-Forming Agent/Pt
2.5. Hydrocracking Behaviors of Pt-Loaded Zeolite Catalysts
# | Catalyst | Remarks | Product yield on a carbon basis (%) | dpulse | nPt/nA | |||
---|---|---|---|---|---|---|---|---|
YC1–C8 | YC9–C15a | YC16+ | Loss | nm | ||||
A | M-Pt(TEAC)/940HOA | TEAC/Pt = 10 | 20.6 | 27.9 | 49.4 | 2.0 | 3.8 | 0.0048 |
C | M-Pt(TPAB)/940HOA | TPAB/Pt = 10 | 22.7 | 30.0 | 48.9 | −1.7 | 4.2 | 0.0041 |
D | M-Pt(HTAB)/940HOA | HTAB/Pt = 10 | 23.4 | 28.6 | 46.3 | 1.6 | 4.7 | 0.0039 |
E | M-Pt(N2H4)/940HOA | N2H4/Pt = 80 | 11.5 | 26.2 | 62.2 | 0.1 | 6.1 | 0.0029 |
J | I-Pt/940HOA | Impregnation | 17.1 | 27.8 | 53.1 | 1.9 | 6.7 | 0.0024 |
3. Experimental Section
3.1. Catalyst Preparation
3.2. Characterization
3.3. Hydrocracking Test
3.3.1. Production of the FT Product as a Feedstock of Hydrocracking
Composition on a carbon basis (%) | Elemental analysis (wt.%) | |||||||
---|---|---|---|---|---|---|---|---|
C5–C8 | C9–C15a | C16b | C17+ | C | H | N | S | O c |
0.0 | 23.1 | 20.2 | 56.7 | 85.0 | 14.9 | 0.0 | 0.0 | 0.2 |
3.3.2. Hydrocracking Test
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Hanaoka, T.; Miyazawa, T.; Shimura, K.; Hirata, S. Preparation for Pt-Loaded Zeolite Catalysts Using w/o Microemulsion and Their Hydrocracking Behaviors on Fischer-Tropsch Product. Catalysts 2015, 5, 88-105. https://doi.org/10.3390/catal5010088
Hanaoka T, Miyazawa T, Shimura K, Hirata S. Preparation for Pt-Loaded Zeolite Catalysts Using w/o Microemulsion and Their Hydrocracking Behaviors on Fischer-Tropsch Product. Catalysts. 2015; 5(1):88-105. https://doi.org/10.3390/catal5010088
Chicago/Turabian StyleHanaoka, Toshiaki, Tomohisa Miyazawa, Katsuya Shimura, and Satoshi Hirata. 2015. "Preparation for Pt-Loaded Zeolite Catalysts Using w/o Microemulsion and Their Hydrocracking Behaviors on Fischer-Tropsch Product" Catalysts 5, no. 1: 88-105. https://doi.org/10.3390/catal5010088