不锈钢基PbO_2电极电化学漂白三倍体毛白杨化学浆的研究  

Electrochemical bleaching with PbO_2 electrode on chemical pulp of triploid Populus tomentosa.

作　　者：赵强[1] 蒲俊文[1] 周舒珂[1] 邢勉[1] 

机构地区：[1]北京林业大学材料科学与技术学院,木材科学与工程北京市重点实验室,木质材料科学与应用教育部重点实验室

出　　处：《北京林业大学学报》2009年第S1期143-147,共5页Journal of Beijing Forestry University

基　　金："十一五"国家科技支撑计划项目(2006BAD18B0502)

摘　　要：为了研究不锈钢基PbO2电极对纸浆的漂白效果,该文以不锈钢为基体,通过电沉积法制备出高催化性能的PbO2电极,并以所制备的电极作阳极,应用于三倍体毛白杨化学浆的漂白。同时,对比研究了以不锈钢作阳极时的漂白效果。结果表明:相同的电化学处理条件下,PbO2为阳极时,纸浆的白度、木素脱除率比不锈钢阳极稍低,但其脱木素选择性明显高于不锈钢阳极,有利于纤维素及半纤维素的保护。这表明,不锈钢基PbO2电极在漂白过程中,具有较好的催化性能、较高的脱木素选择性。The main purpose of this paper is to study the bleaching effects with the PbO_2 anode on stainless steel substrate.The PbO_2 anode with high catalytic activity was produced by electrodeposition method.Bleaching results with PbO_2 and stainless steel as anode were studied respectively.The pulp brightness and delignification rate were lower with PbO_2 as anode than those with stainless steel anode under the same electrochemical conditions.But the PbO_2 anode can provide a better selectivity of delignification and reduce the viscosity loss.Infrared spectrum analysis also verified the conclusion.The results indicate that PbO_2 electrode has a good performance in pulp bleaching process.

关 键 词：电化学漂白 PbO2阳极 三倍体毛白杨 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]