Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (8): 20260004.doi: 10.7503/cjcu20260004
• Physical Chemistry • Previous Articles Next Articles
LI Shiqing1, WANG Zhuo2, ZHANG Bin1, ZENG Bingfang3, RUAN Xianghui1(
), LYU Menglan1(
)
Received:2026-01-01
Online:2026-08-10
Published:2026-05-14
Contact:
RUAN Xianghui, LYU Menglan
E-mail:xhruan@gzu.edu.cn;mllv@gzu.edu.cn
Supported by:CLC Number:
TrendMD:
LI Shiqing, WANG Zhuo, ZHANG Bin, ZENG Bingfang, RUAN Xianghui, LYU Menglan. Pseudo Lotus Leaf Layered Design to Enhance the Surface Hydrophobicity and CO2 Adsorption Capability of 13X Molecular Sieve[J]. Chem. J. Chinese Universities, 2026, 47(8): 20260004.
| Temperatur/℃ | Langmuir adsorption model | Freundlich adsorption model | |||||
|---|---|---|---|---|---|---|---|
| qm | k | R2 | k | 1/n | R2 | ||
| 40 | 0.195 | 0.091 | 0.988 | 0.048 | 0.297 | 0.967 | |
| 60 | 0.198 | 0.039 | 0.998 | 0.023 | 0.431 | 0.981 | |
| 80 | 0.171 | 0.019 | 0.997 | 0.009 | 0.559 | 0.995 | |
| 100 | 0.128 | 0.017 | 0.968 | 0.005 | 0.595 | 0.943 | |
Table 1 Langmuir and Freundlich adsorption isotherm fitting parameters of PS-PMMA0.05/13X molecular sieve
| Temperatur/℃ | Langmuir adsorption model | Freundlich adsorption model | |||||
|---|---|---|---|---|---|---|---|
| qm | k | R2 | k | 1/n | R2 | ||
| 40 | 0.195 | 0.091 | 0.988 | 0.048 | 0.297 | 0.967 | |
| 60 | 0.198 | 0.039 | 0.998 | 0.023 | 0.431 | 0.981 | |
| 80 | 0.171 | 0.019 | 0.997 | 0.009 | 0.559 | 0.995 | |
| 100 | 0.128 | 0.017 | 0.968 | 0.005 | 0.595 | 0.943 | |
| Molecular sieve | Hydrophobic modification | Adsorption conditions | Adsorption capacity/(g∙g-1) | Ref. | ||
|---|---|---|---|---|---|---|
| Temperature/℃ | CO2 volume fraction(%) | RH(%) | ||||
| MOR | Dealumination | 25 | 9 | 75 | 0.0298 | [ |
| NaX | Silanization | 50 | 14 | 5 | 0.0150 | [ |
| NaX | Polyacrylate hydrophobic layer | 40 | 10 | 11 | 0.0563 | [ |
| β | Benzylamine functionalization | 40 | 10.5 | 5 | 0.0382 | [ |
| 13X | Carbon coating | 25 | 13.6 | 4.5 | 0.0460 | [ |
| A Type | Imidazolate⁃based hydrophobic layer | 25 | 15 | 90 | 0.1174 | [ |
| ZSM⁃5 | All⁃silica MFI hydrophobic layer | 40 | 15 | 100 | 0.0132 | [ |
| PS⁃PMMA0.05/13X | PS⁃PMMA hydrophobic particle layer | 50 | 15 | 15 | 0.0440 | This work |
Table 2 Comparison of CO2 adsorption performance of hydrophobically modified molecular sieve under different conditions
| Molecular sieve | Hydrophobic modification | Adsorption conditions | Adsorption capacity/(g∙g-1) | Ref. | ||
|---|---|---|---|---|---|---|
| Temperature/℃ | CO2 volume fraction(%) | RH(%) | ||||
| MOR | Dealumination | 25 | 9 | 75 | 0.0298 | [ |
| NaX | Silanization | 50 | 14 | 5 | 0.0150 | [ |
| NaX | Polyacrylate hydrophobic layer | 40 | 10 | 11 | 0.0563 | [ |
| β | Benzylamine functionalization | 40 | 10.5 | 5 | 0.0382 | [ |
| 13X | Carbon coating | 25 | 13.6 | 4.5 | 0.0460 | [ |
| A Type | Imidazolate⁃based hydrophobic layer | 25 | 15 | 90 | 0.1174 | [ |
| ZSM⁃5 | All⁃silica MFI hydrophobic layer | 40 | 15 | 100 | 0.0132 | [ |
| PS⁃PMMA0.05/13X | PS⁃PMMA hydrophobic particle layer | 50 | 15 | 15 | 0.0440 | This work |
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