高等学校化学学报 ›› 2026, Vol. 47 ›› Issue (6): 20250307.doi: 10.7503/cjcu20250307
程耀扬1, 林伟志1, 乐宇1, 李松涛2, 李如金2, 康金灿1(
)
收稿日期:2025-10-21
出版日期:2026-06-10
发布日期:2025-12-11
通讯作者:
康金灿
E-mail:kangjc@xmu.edu.cn
基金资助:
CHENG Yaoyang1, LIN Weizhi1, LE Yu1, LI Songtao2, LI Rujin2, KANG Jincan1(
)
Received:2025-10-21
Online:2026-06-10
Published:2025-12-11
Contact:
KANG Jincan
E-mail:kangjc@xmu.edu.cn
Supported by:摘要:
考察了不同钼源、 硫源和水热条件对二硫化钼催化剂性能的影响. 结果显示, 以四水合钼酸铵作钼源, 硫脲作硫源, 水热温度为190 ℃时其催化性能最优, CO2转化率为13.7%, CH3OH选择性为82.0%. 对二硫化钼催化剂进行改性发现, Zn的引入可提高CO2加氢性能, 1%Zn/MoS2催化剂具有最优催化性能, CO2转化率为14.8%, CH3OH选择性为90.5%. 该催化剂在150 h内CO2转化率相对稳定, CH3OH选择性随反应进行逐渐提升并趋于稳定. 催化剂表征结果表明, 水热法合成的二硫化钼催化剂平均层数为5.5层, 层数较少; 而Zn的引入既增强了催化剂活化H2的能力, 提高了CO2转化率, 又增加了硫空位数量, 有利于甲醇的选择性生成.
中图分类号:
TrendMD:
程耀扬, 林伟志, 乐宇, 李松涛, 李如金, 康金灿. 用于二氧化碳加氢制甲醇的改性二硫化钼催化剂. 高等学校化学学报, 2026, 47(6): 20250307.
CHENG Yaoyang, LIN Weizhi, LE Yu, LI Songtao, LI Rujin, KANG Jincan. Modified Molybdenum Disulfide Catalyst for Hydrogenation of Carbon Dioxide to Methanol. Chem. J. Chinese Universities, 2026, 47(6): 20250307.
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2⁃AT | 12.3 | 9.9 | 83.7 | 6.0 | 0.4 |
| MoS2⁃ST | 7.5 | 11.3 | 84.5 | 3.9 | 0.3 |
| MoS2⁃SMT | 8.5 | 14.8 | 82.3 | 2.2 | 0.7 |
| MoS2⁃MP | 8.7 | 9.8 | 87.5 | 2.5 | 0.2 |
Table 1 Catalytic performances of MoS2 catalysts synthesized by different molybdenum and sulfur sources for CO2 hydrogenation*
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2⁃AT | 12.3 | 9.9 | 83.7 | 6.0 | 0.4 |
| MoS2⁃ST | 7.5 | 11.3 | 84.5 | 3.9 | 0.3 |
| MoS2⁃SMT | 8.5 | 14.8 | 82.3 | 2.2 | 0.7 |
| MoS2⁃MP | 8.7 | 9.8 | 87.5 | 2.5 | 0.2 |
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2⁃180 | 12.3 | 9.9 | 83.7 | 6.0 | 0.4 |
| MoS2⁃190 | 13.7 | 8.5 | 82.0 | 9.0 | 0.5 |
| MoS2⁃200 | 13.0 | 9.7 | 83.3 | 6.6 | 0.4 |
| MoS2⁃210 | 11.4 | 6.9 | 79.9 | 12.8 | 0.4 |
| MoS2⁃220 | 11.5 | 7.3 | 82.1 | 10.1 | 0.5 |
Table 2 Catalytic performances of MoS2 catalysts synthesized under different hydrothermal temperatures for CO2 hydrogenation*
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2⁃180 | 12.3 | 9.9 | 83.7 | 6.0 | 0.4 |
| MoS2⁃190 | 13.7 | 8.5 | 82.0 | 9.0 | 0.5 |
| MoS2⁃200 | 13.0 | 9.7 | 83.3 | 6.6 | 0.4 |
| MoS2⁃210 | 11.4 | 6.9 | 79.9 | 12.8 | 0.4 |
| MoS2⁃220 | 11.5 | 7.3 | 82.1 | 10.1 | 0.5 |
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2 | 13.7 | 8.5 | 82.0 | 9.0 | 0.5 |
| 1%Cu/MoS2 | 12.2 | 12.9 | 81.2 | 5.0 | 0.9 |
| 1%In/MoS2 | 12.1 | 3.9 | 90.3 | 5.5 | 0.3 |
| 1%Zn/MoS2 | 14.8 | 5.0 | 90.5 | 4.0 | 0.5 |
| 1%K/MoS2 | 14.1 | 13.2 | 80.0 | 6.4 | 0.4 |
| 1%Pt/MoS2 | 17.8 | 35.6 | 57.2 | 6.9 | 0.3 |
| 1%Ga/MoS2 | 12.9 | 3.9 | 88.9 | 6.0 | 1.2 |
| 1%Cd/MoS2 | 13.6 | 4.1 | 87.9 | 7.4 | 0.6 |
Table 3 Catalytic performances of 1%X/MoS2 catalysts for CO2 hydrogenation*
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2 | 13.7 | 8.5 | 82.0 | 9.0 | 0.5 |
| 1%Cu/MoS2 | 12.2 | 12.9 | 81.2 | 5.0 | 0.9 |
| 1%In/MoS2 | 12.1 | 3.9 | 90.3 | 5.5 | 0.3 |
| 1%Zn/MoS2 | 14.8 | 5.0 | 90.5 | 4.0 | 0.5 |
| 1%K/MoS2 | 14.1 | 13.2 | 80.0 | 6.4 | 0.4 |
| 1%Pt/MoS2 | 17.8 | 35.6 | 57.2 | 6.9 | 0.3 |
| 1%Ga/MoS2 | 12.9 | 3.9 | 88.9 | 6.0 | 1.2 |
| 1%Cd/MoS2 | 13.6 | 4.1 | 87.9 | 7.4 | 0.6 |
Fig.2 EPR spectra of MoS2 and modified MoS2(A) EPR spectra of MoS2 and modified MoS2. (B) The corresponding EPR absorption spectra derived from (A) through numerical integration and g-to-B axis conversion, where the peak areas were employed to semi-quantitatively evaluate the relative oxygen vacancy concentrations.
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2 | 13.7 | 8.5 | 82.0 | 9.0 | 0.5 |
| 0.5%Zn/MoS2 | 13.9 | 5.5 | 88.1 | 5.8 | 0.6 |
| 1%Zn/MoS2 | 14.8 | 5.0 | 90.5 | 4.0 | 0.5 |
| 2%Zn/MoS2 | 13.7 | 5.5 | 91.2 | 3.0 | 0.3 |
| 3%Zn/MoS2 | 12.8 | 5.1 | 89.7 | 4.8 | 0.4 |
| 4%Zn/MoS2 | 11.6 | 6.2 | 88.9 | 4.5 | 0.4 |
Table 4 Catalytic performances of xZn/MoS2 catalysts on CO2 hydrogenation*
| Catalyst | CO2 conv.(%) | Selectivity(%) | |||
|---|---|---|---|---|---|
| CO | CH3OH | CH4 | Other | ||
| MoS2 | 13.7 | 8.5 | 82.0 | 9.0 | 0.5 |
| 0.5%Zn/MoS2 | 13.9 | 5.5 | 88.1 | 5.8 | 0.6 |
| 1%Zn/MoS2 | 14.8 | 5.0 | 90.5 | 4.0 | 0.5 |
| 2%Zn/MoS2 | 13.7 | 5.5 | 91.2 | 3.0 | 0.3 |
| 3%Zn/MoS2 | 12.8 | 5.1 | 89.7 | 4.8 | 0.4 |
| 4%Zn/MoS2 | 11.6 | 6.2 | 88.9 | 4.5 | 0.4 |
Fig.4 EPR spectra of MoS2 modified by Zn(A) EPR spectra of MoS2 modified with different Zn loadings. (B) Corresponding EPR absorption spectra derived from (A) through numerical integration and g-to-B axis conversion, where the peak areas were employed to semi-quantitatively evaluate the relative oxygen vacancy concentrations. (C) Semi-quantitative comparison of relative sulfur vacancy concentrations normalized to the sample with the highest vacancy density. (D) Linear correlation between STY of methanol and the relative sulfur vacancy concentration of catalyst.
Fig.11 Catalytic performances of 1%Zn/MoS2 for CO2 hydrogenation under different temperaturesReaction conditions: 5.0 MPa; 3000 h-1; V(H2)/V(CO2)=3∶1; 6 h.
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