CAJ | 학술논문

以11B NMR法研究了硼酸与2,3-二羟基萘-6-磺酸钠的配位反应.结果表明,2,3-二羟基萘-6-磺酸钠与水溶液中的硼酸根离子反应生成五元环的1：1和1：2（化学计量比）的配合物,配合物的形成常数分别为logβ1=5.22、logβ2=6.10.利用离子交换法制备了2,3-二羟基萘-6-磺酸钠接枝硼选择性吸附剂,吸附剂上2,3-二羟基萘-6-磺酸钠担载量为1.20mmol/g.以bath法研究了2,3-二羟基萘-6-磺酸钠接枝吸附剂对水中硼的去除作用,考察了溶液pH值、初始硼浓度、温度、吸附时间等因素对硼去除率的影响.在该吸附剂吸附硼的热力学和动力学研究中发现,硼的吸附符合准二级速率方程,是化学吸附和物理吸附共同作用的结果,B（OH）4-以1：1配合物的形式和静电吸引的方式结合在吸附剂上;吸附速率主要为化学吸附控制.
이11B NMR법연구료붕산여2,3-이간기내-6-광산납적배위반응.결과표명,2,3-이간기내-6-광산납여수용액중적붕산근리자반응생성오원배적1：1화1：2（화학계량비）적배합물,배합물적형성상수분별위logβ1=5.22、logβ2=6.10.이용리자교환법제비료2,3-이간기내-6-광산납접지붕선택성흡부제,흡부제상2,3-이간기내-6-광산납담재량위1.20mmol/g.이bath법연구료2,3-이간기내-6-광산납접지흡부제대수중붕적거제작용,고찰료용액pH치、초시붕농도、온도、흡부시간등인소대붕거제솔적영향.재해흡부제흡부붕적열역학화동역학연구중발현,붕적흡부부합준이급속솔방정,시화학흡부화물리흡부공동작용적결과,B（OH）4-이1：1배합물적형식화정전흡인적방식결합재흡부제상;흡부속솔주요위화학흡부공제.
The complexation of boric acid with 2,3-dihydroxynaphthalene-6-sodium sulfonate in aqueous solution wasexamined using 11B NMR measurements. This confirms that boric acid reacts with 2,3-dihydroxynaphthalene-6-sodiumsulfonate to form two complexes with 1：1 and 1：2 stoichiometries. The formation constants for these complexes are logβ1= 5.22 and logβ2 = 6.10. A novel boron selective adsorbent was prepared by adsorbing 2,3-dihydroxynaphthalene-6-sodium sulfonate onto an ion-exchange resin. The loading amount of 2,3-dihydroxynaphthalene-6-sodium sulfonate on theadsorbents was 1.20 mmol/g. Bath experiments were conducted to evaluate the performance of the adsorbent for removalof boron from water, and the effects of pH and boron solution concentration, contact time, and bath temperature on theremoval efficiency were investigated. The adsorption of boron onto the adsorbent conforms to the pseudo-second-order rateequation. It is a chemical and physical adsorption process, whereby B（OH）4？ bonds to the adsorbent mainly in the form of 1：1complex and electrostatic attraction. The adsorption rate is controlled by chemical adsorption mechanisms.