缓冲溶液法制备高效的铁基类芬顿催化剂

doi:10.16085/j.issn.1000-6613.2020-0166

摘要/Abstract

摘要：

负载型金属催化剂在水处理中起着重要的作用，浸渍法是制备负载型催化剂的重要方法。为了克服传统浸渍方法的缺点，本文通过使用甘氨酸/盐酸作为缓冲溶液，严格控制pH，获得高分散的活性组分并以此方法制备了铁基类芬顿催化剂。对苯酚催化降解的实验表明，使用缓冲溶液法制备的催化剂比未使用的样品可以更高效地去除苯酚，1h内对苯酚的降解可达89.3%。此外，通过调节浸渍温度、浸渍时间和缓冲溶液的pH等参数来精确控制活性组分的量和催化活性。更重要的是，此催化剂制备方法可以用于其他负载型金属催化剂的制备，比如过硫酸盐催化剂，并取得了良好的催化效果。

关键词: 催化剂, 溶液, 控制, 沉淀, 降解

Abstract:

Supported metal catalyst plays an important role in advanced oxidation process and impregnation is an important method for its preparation. A smart strategy was put forward to overcome the defects of traditional impregnation method. By using glycine/hydrochloric acid as the buffer solution in the study, the pH was strictly controlled. In this way, an efficient Fenton-like catalyst was prepared and used in phenol degradation. The prepared catalyst removed 89.3% phenol within one hour, faster than the sample without the buffer solution control. Furthermore, the amount of active component and the catalytic activity can be precisely controlled by adjusting the impregnation parameters including impregnation temperature, impregnation time and pH of the buffer solution. More important, this catalyst preparation strategy can be expanded to the preparation of other supported metal catalysts.

Key words: catalyst, solution, control, precipitation, degradation

中图分类号:

O643.36

李兴发, 胡浩栋, 王朝旭. 缓冲溶液法制备高效的铁基类芬顿催化剂[J]. 化工进展, 2020, 39(11): 4456-4461.

Xingfa LI, Haodong HU, Chaoxu WANG. Preparation of iron-based Fenton-like catalyst with high efficiency by buffer solution method[J]. Chemical Industry and Engineering Progress, 2020, 39(11): 4456-4461.

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