微波辐照对铬络合物稳定常数的影响  

Microwave Irradiation Assisted the Stability Constant of Chromium(Ⅲ) Complexes

作　　者：陈静 李信柱[1] 王志伟 陈汝兰 陈武勇 CHEN Jing;LI Sean;WANG Zhiwei;CHEN Rulan;CHEN Wuyong(Consumer Testing Technologr Co. Ltd,Dongguan 523000,China;National Engimering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China)

机构地区：[1]东莞市中鼎检测技术有限公司,广东东莞523000 [2]四川大学制革清洁技术国家工程实验室,四川成都610065

出　　处：《皮革科学与工程》2019年第2期24-29,共6页Leather Science and Engineering

基　　金：国家自然科学基金(21576171)

摘　　要：采用等摩尔浓度法和紫外光谱测试法,探讨微波辐照对不同羧酸(甲酸根和草酸根)与铬的配位过程以及对铬络合物稳定常数和络合物稳定性的影响。结果发现,与水浴加热相比,微波辐照下铬络合物的最大吸收波长发生紫移,配位比提高,稳定常数增大,由此说明,微波辐照加速了甲酸根(和草酸根)与铬离子的络合反应速度,增强了甲酸铬络合物(和草酸铬络合物)的水解和配聚,提高了铬络合物的稳定性。The influence of microwave irradiation on the stability constant of Cr(Ⅲ)complexes and their coordination process,reacted by Carboxylate complex(formate ion and oxalate ion)and chromic nitrate,were studied with Equimolar concentration and UV-vis spectrophotometry.The results indicate that the stability and rate of complexing reaction of of Cr(Ⅲ)complexes formed were both accelerated by microwave irradiation compared with water bath heating,because of the violet shift of maximum absorption wavelength,increased complex ratio and stability constant.

关 键 词：微波辐照 铬络合物 稳定常数 

分 类 号：TS513[轻工技术与工程—皮革化学与工程]