Home

Citation: Wu De-Yi. Adsorption of Weak Organic Bases on 1:1 and 2:1 Type Layer Silicates without Layer Charge from Non-polar Organic Solvents[J]. Acta Physico-Chimica Sinica, ;1997, 13(11): 978-983. doi: 10.3866/PKU.WHXB19971105 shu

Adsorption of Weak Organic Bases on 1:1 and 2:1 Type Layer Silicates without Layer Charge from Non-polar Organic Solvents

Wu De-Yi

1.
Southwest Agricultural University,Chongqing 630716

Received Date: 3 January 1997
Available Online: 15 November 1997

Equilibrium adsorption of five substituted azobenzenes with pKa=1.5-5.0 from nonpolar organic solvents on 1:1 and 2:1 type layer silicates without layer charge (kaolinite, lizardite, pyrophyllite, and talc) was studied. It was shown that the shape of each adsorption isotherm belongs to L type, and, the color of the substituted azobenzene molecules adsorbed changed from basic type (yellowish) to acidic type (reddish or purplish). The higher the basicity (pKa) of the substituted azobenzene, the greater the adsorptive capacity. Moreover, the weak organic bases were more strongly adsorbed from n-hexane and carbon disulfide solutions than from benzene solution. From these facts, it was concluded that the adsorption mechanism of the weak organic bases on the minerals without layer charge is an acid-base interaction. It was also shown that the amount of acid sites of kaolinite saturated with Na, Ca, and Mg is almost identical, while that of montmorillonite shows strong dependence on exchangeable cation species. The decrease of the amount of acid sites due to the increase of RH also has quite different pattern for the minerals. These indicate that the origin of the acidity on kaolinite can not attributed to the hydrolysis of water molecules around exchangeable cations, as in the case of montmorillonite.
- Clay mineral')">
  Clay mineral,
- Organic base,
- Adsorption;Surface acidity,
- Acid sites,
- Non-polar organic solvent
  ,
1. [1]
  Qiuyang LUO , Xiaoning TANG , Shu XIA , Junnan LIU , Xingfu YANG , Jie LEI . Application of a densely hydrophobic copper metal layer in-situ prepared with organic solvents for protecting zinc anodes. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1243-1253. doi: 10.11862/CJIC.20240110
2. [2]
  Youlin SI , Shuquan SUN , Junsong YANG , Zijun BIE , Yan CHEN , Li LUO . Synthesis and adsorption properties of Zn(Ⅱ) metal-organic framework based on 3, 3', 5, 5'-tetraimidazolyl biphenyl ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1755-1762. doi: 10.11862/CJIC.20240061
3. [3]
  Qianlang Wang , Jijun Sun , Qian Chen , Quanqin Zhao , Baojuan Xi . The Appeal of Organophosphorus Compounds: Clearing Their Name. University Chemistry, 2025, 40(4): 299-306. doi: 10.12461/PKU.DXHX202405205
4. [4]
  Shasha Ma , Zujin Yang , Jianyong Zhang . Facile Synthesis of FeBTC Metal-Organic Gel and Its Adsorption of Cr₂O₇²⁻: A Physical Chemistry Innovation Experiment. University Chemistry, 2024, 39(8): 314-323. doi: 10.3866/PKU.DXHX202401008
5. [5]
  Wenxiu Yang , Jinfeng Zhang , Quanlong Xu , Yun Yang , Lijie Zhang . Bimetallic AuCu Alloy Decorated Covalent Organic Frameworks for Efficient Photocatalytic Hydrogen Production. Acta Physico-Chimica Sinica, 2024, 40(10): 2312014-. doi: 10.3866/PKU.WHXB202312014
6. [6]
  Aiai WANG , Lu ZHAO , Yunfeng BAI , Feng FENG . Research progress of bimetallic organic framework in tumor diagnosis and treatment. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1825-1839. doi: 10.11862/CJIC.20240225
7. [7]
  Feng Sha , Xinyan Wu , Ping Hu , Wenqing Zhang , Xiaoyang Luan , Yunfei Ma . Design of Course Ideology and Politics for the Comprehensive Organic Synthesis Experiment of Benzocaine. University Chemistry, 2024, 39(2): 110-115. doi: 10.3866/PKU.DXHX202307082
8. [8]
  Xinyu Zhu , Meili Pang . Application of Functional Group Addition Strategy in Organic Synthesis. University Chemistry, 2024, 39(3): 218-230. doi: 10.3866/PKU.DXHX202308106
9. [9]
  Tianyun Chen , Ruilin Xiao , Xinsheng Gu , Yunyi Shao , Qiujun Lu . Synthesis, Crystal Structure, and Mechanoluminescence Properties of Lanthanide-Based Organometallic Complexes. University Chemistry, 2024, 39(5): 363-370. doi: 10.3866/PKU.DXHX202312017
10. [10]
  Shicheng Yan . Experimental Teaching Design for the Integration of Scientific Research and Teaching: A Case Study on Organic Electrooxidation. University Chemistry, 2024, 39(11): 350-358. doi: 10.12461/PKU.DXHX202408036
11. [11]
  Yong Wang , Yingying Zhao , Boshun Wan . Analysis of Organic Questions in the 37th Chinese Chemistry Olympiad (Preliminary). University Chemistry, 2024, 39(11): 406-416. doi: 10.12461/PKU.DXHX202403009
12. [12]
  Ran HUO , Zhaohui ZHANG , Xi SU , Long CHEN . Research progress on multivariate two dimensional conjugated metal organic frameworks. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2063-2074. doi: 10.11862/CJIC.20240195
13. [13]
  Bin HE , Hao ZHANG , Lin XU , Yanghe LIU , Feifan LANG , Jiandong PANG . Recent progress in multicomponent zirconium?based metal-organic frameworks. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2041-2062. doi: 10.11862/CJIC.20240161
14. [14]
  Xiaofang DONG , Yue YANG , Shen WANG , Xiaofang HAO , Yuxia WANG , Peng CHENG . Research progress of conductive metal-organic frameworks. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 14-34. doi: 10.11862/CJIC.20240388
15. [15]
  Xuejie Wang , Guoqing Cui , Congkai Wang , Yang Yang , Guiyuan Jiang , Chunming Xu . 碳基催化剂催化有机液体氢载体脱氢研究进展. Acta Physico-Chimica Sinica, 2025, 41(5): 100044-. doi: 10.1016/j.actphy.2024.100044
16. [16]
  Lina Feng , Guoyu Jiang , Xiaoxia Jian , Jianguo Wang . Application of Organic Radical Materials in Biomedicine. University Chemistry, 2025, 40(4): 253-260. doi: 10.12461/PKU.DXHX202405171
17. [17]
  Jiajie Li , Xiaocong Ma , Jufang Zheng , Qiang Wan , Xiaoshun Zhou , Yahao Wang . Recent Advances in In-Situ Raman Spectroscopy for Investigating Electrocatalytic Organic Reaction Mechanisms. University Chemistry, 2025, 40(4): 261-276. doi: 10.12461/PKU.DXHX202406117
18. [18]
  Yongjian Zhang , Fangling Gao , Hong Yan , Keyin Ye . Electrochemical Transformation of Organosulfur Compounds. University Chemistry, 2025, 40(5): 311-317. doi: 10.12461/PKU.DXHX202407035
19. [19]
  Hui Wang , Abdelkader Labidi , Menghan Ren , Feroz Shaik , Chuanyi Wang . 微观结构调控的g-C₃N₄在光催化NO转化中的最新进展：吸附/活化位点的关键作用. Acta Physico-Chimica Sinica, 2025, 41(5): 100039-. doi: 10.1016/j.actphy.2024.100039
20. [20]
  Peiran ZHAO , Yuqian LIU , Cheng HE , Chunying DUAN . A functionalized Eu³⁺ metal-organic framework for selective fluorescent detection of pyrene. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 713-724. doi: 10.11862/CJIC.20230355

Get Citation

PDF

XML

Metrics

PDF Downloads(2453)
Abstract views(3195)
HTML views(99)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return