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中国塑料 ›› 2023, Vol. 37 ›› Issue (2): 62-70.DOI: 10.19491/j.issn.1001-9278.2023.02.010
收稿日期:
2022-11-30
出版日期:
2023-02-26
发布日期:
2023-02-22
通讯作者:
李瑞丽(1965—),女,副教授,从事清洁油品生产的教学与研究,lrl4806@163.com
ZHAI Yongyi, LI Ruili(), BU Yuhao, JI Yaru
Received:
2022-11-30
Online:
2023-02-26
Published:
2023-02-22
Contact:
LI Ruili
E-mail:lrl4806@163.com
摘要:
采用溶剂热法制备了八面体形态的UiO⁃66并采用金属Mg掺杂对UiO⁃66进行改性。为考察最佳掺杂浓度,制备了Mg⁃UiO⁃66⁃n(n为镁锆摩尔比)吸附剂。利用X射线衍射仪(XRD)、红外光谱仪(FTIR)和扫描电子显微镜(SEM)等对吸附剂的形貌和表面性能进行了表征,并研究了Mg⁃UiO⁃66⁃0.07的吸附脱氯性能以及吸附机制。结果表明,Mg掺杂UiO⁃66吸附剂已被成功制备;Mg⁃UiO⁃66⁃0.07的吸附效果最佳,吸附时间为4 h,吸附温度为40 ℃,剂油比为1/40时的脱除率达95.03 %,可再生循环使用5次。吸附过程是1个自发的化学吸附过程,符合拟二级动力学模型。
中图分类号:
翟永怡, 李瑞丽, 卜禹豪, 姬娅茹. Mg掺杂UiO⁃66的制备及其塑料油品脱氯性能[J]. 中国塑料, 2023, 37(2): 62-70.
ZHAI Yongyi, LI Ruili, BU Yuhao, JI Yaru. Preparation and dechlorination performance of Mg⁃doped UiO⁃66 for plastic oil[J]. China Plastics, 2023, 37(2): 62-70.
样品 | 拟一级动力学方程 | 拟二级动力学方程 | ||||
---|---|---|---|---|---|---|
k1/min-1 | qe,exp | R2 | k2/mg·(g·min)-1 | qe,exp | R2 | |
Mg⁃UiO⁃66⁃0.07 | 0.002 | 5.77 | 0.849 | 15.109 | 7.34 | 0.999 |
样品 | 拟一级动力学方程 | 拟二级动力学方程 | ||||
---|---|---|---|---|---|---|
k1/min-1 | qe,exp | R2 | k2/mg·(g·min)-1 | qe,exp | R2 | |
Mg⁃UiO⁃66⁃0.07 | 0.002 | 5.77 | 0.849 | 15.109 | 7.34 | 0.999 |
样品 | k1d/g∙mg-1∙min-1/2 | R12 | k2d/g∙mg-1∙min-1/2 | R22 | k3d/g∙mg-1∙min-1/2 | R32 |
---|---|---|---|---|---|---|
Mg⁃UiO⁃66⁃0.07 | 0.916 | 0.997 | 0.211 | 0.987 | 0.016 9 | 0.958 |
样品 | k1d/g∙mg-1∙min-1/2 | R12 | k2d/g∙mg-1∙min-1/2 | R22 | k3d/g∙mg-1∙min-1/2 | R32 |
---|---|---|---|---|---|---|
Mg⁃UiO⁃66⁃0.07 | 0.916 | 0.997 | 0.211 | 0.987 | 0.016 9 | 0.958 |
样品 | Langmuir | Freundlich | ||||
---|---|---|---|---|---|---|
KL | qmax | R2 | KF | n | R2 | |
Mg⁃UiO⁃66⁃0.07 | 0.225 | 22.36 | 0.997 | 1.913 | 1.33 | 0.987 |
样品 | Langmuir | Freundlich | ||||
---|---|---|---|---|---|---|
KL | qmax | R2 | KF | n | R2 | |
Mg⁃UiO⁃66⁃0.07 | 0.225 | 22.36 | 0.997 | 1.913 | 1.33 | 0.987 |
T/K | △G/ kJ·mol-1 | △H/kJ·mol-1 | △S/ J·(mol·K-1)-1 |
---|---|---|---|
298.15 | -1.277 | 4.217 | 0.015 |
308.15 | -2.394 | ||
318.15 | -4.242 |
T/K | △G/ kJ·mol-1 | △H/kJ·mol-1 | △S/ J·(mol·K-1)-1 |
---|---|---|---|
298.15 | -1.277 | 4.217 | 0.015 |
308.15 | -2.394 | ||
318.15 | -4.242 |
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