| 第 51 卷第 6 期 |  | Vol. 51 No. 6 | | 2021 年 12 月 | Dec 2021 |
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所属栏目：功能材料
碳纳米管负载Fe2O3 催化剂在风化煤制备硝基腐植酸中的应用 |
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刘光鹏， 彭 健， 周 文， 李 辑， 吴中佳， 肖 颖 ＊
（邵阳市产商品质量监督栓验所， 湖南 邵阳 422000)
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| 摘 要：风化煤硝酸氧解制备硝基腐植酸（NHA） 中加入碳纳米管负载 Fe2O3（CNT I Fe2O3） 催化剂以提高
NHA 收率。 考察了催化剂用量、 氧解温度以及氧解时间 3 个因素对 NHA 收率的影响。 对催化剂加入前后氧解产物 NHA 的红外分析、 收率、 波长 465 nm 和 665 nm
处光密度比值（E4 I E6）测定以及元素分析进行了对比， 结果表明： 催化剂明显提高风化煤氧解 NHA 收率， 对氧解产物 NHA 结构无明显影响； 催化剂用量对 NHA 收率影响较大，
氧解温度次之， 氧解时间最小， 优化条件下， 即催化剂用量为 10%、 氧解温度
120 屯以及氧解时间 0.8 h 时， 收率达 55.0%。
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| 关键词：
硝基腐植酸； 风化煤； 碳纳术管； 负载； 三氧化二铁
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| 中图分类号：0643.36 文献标识码：A 文章编号：1009-9212(2021)06-0058-04 |
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Application of Carbon Nanotubes Supported Fe2O3 as Catalyst in the Preparation of Nitro-humic
Acid from Weathered Coal
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LIU Guang-peng, PENG Jian, ZHOU Wen, LI Ji, WU Zhong-jia, XIAO Ying*
(Shaoyang Testing Institute of Product and Commodity Supervision, Shaoyang 422000, China)
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| Abstract：In the preparation of Nitro humic acid (NHA) from weathered coal by nitric acid
oxidation, the carbon nanotube supported Fe2O3(CNT/Fe2O3) was used as catalyst to improve the NHA
yield. The effects of catalyst dosage, temperature and reaction time on the yield of NHA were
investigated. Through the infrared analysis, the yield, the optical density ratio (E4/E6) at 465 nm
and 665 nm of the oxidation product NHA before and after adding catalyst, and the comparison of the
elemental analysis were obtained. The results showed that when the catalyst was added into the
oxidation process of weathered coal, the yield of NHA was increased obviously; and the structure of
NHA was not affected greatly; the amount of catalyst has a great effect on the yield of NHA; the
temperature of oxidation is next, and the time of oxidation was the smallest, the highest yield was
reached to 55.0% when the amount of catalyst was of 10% ; the reaction temperature was at 120 °C
and the reaction time was of 0.8 h.
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| Key words：
nitro humic acid; weathered coal; carbon nanotubes; load; Fe203
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基金项目：湖南省市场监督管理局科技项目（2020KJJH54)。
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作者简介：
刘光鹏（1983—)，男，高级工程师，硕士，主要从事产品质量和工艺的研究（E-mail lgpeng520@126.com)。
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联 系 人：肖颖，高级工程师，主要从事产品质量和工艺的研究（E-mail 254383689@qq.com)。
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收稿日期：2021-09-10
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