Acid-base properties of phenol formaldehyde sorbents

被引：3
|
作者：
Shelkovnikova, L. A. [1 ]
Gavlina, O. T. [1 ]
Vitkina, D. E. [2 ]
Shkol'nikov, E. I. [2 ]
Ivanov, V. A.
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
[2] Russian Acad Sci, Joint Inst High Temp, Moscow 127412, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2012年 / 86卷 / 05期
关键词：
phenol formaldehyde sorbents; acid-base properties; aqueous solution; ION-EXCHANGE-RESINS; HANFORD TANK WASTE; CESIUM REMOVAL; DISSOCIATION-CONSTANTS; POLYCONDENSATE RESIN; RADIOCESIUM; TEMPERATURE; TITRATION; CAPACITY; RECOVERY;
D O I：
10.1134/S0036024412050329
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
It is shown that at a temperature of 295 K, phenol groups of phenol formaldehyde sorbents are characterized by the value pK similar to 13.0-13.7. It is found that raising the temperature to 343 K reduces the pK value by one. It is concluded that the reason for the lower acidity of phenol formaldehyde sorbents relative to phenol in an aqueous solution is the smaller amount of firmly bound water.
引用
收藏
页码：825 / 831
页数：7
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