| 第 51 卷第 6 期 |  | Vol. 51 No. 6 | | 2021 年 12 月 | Dec 2021 |
|
所屬欄目：功能材料
碳納米管負載Fe2O3 催化劑在風(fēng)化煤制備硝基腐植酸中的應用 |
|
劉光鵬， 彭 健， 周 文， 李 輯， 吳中佳， 肖 穎 ＊
（邵陽(yáng)市產(chǎn)商品質(zhì)量監督栓驗所， 湖南 邵陽(yáng) 422000)
|
| 摘 要：風(fēng)化煤硝酸氧解制備硝基腐植酸（NHA） 中加入碳納米管負載 Fe2O3（CNT I Fe2O3） 催化劑以提高
NHA 收率。 考察了催化劑用量、 氧解溫度以及氧解時(shí)間 3 個(gè)因素對 NHA 收率的影響。 對催化劑加入前后氧解產(chǎn)物 NHA 的紅外分析、 收率、 波長(cháng) 465 nm 和 665 nm
處光密度比值（E4 I E6）測定以及元素分析進(jìn)行了對比， 結果表明： 催化劑明顯提高風(fēng)化煤氧解 NHA 收率， 對氧解產(chǎn)物 NHA 結構無(wú)明顯影響； 催化劑用量對 NHA 收率影響較大，
氧解溫度次之， 氧解時(shí)間最小， 優(yōu)化條件下， 即催化劑用量為 10%、 氧解溫度
120 屯以及氧解時(shí)間 0.8 h 時(shí)， 收率達 55.0%。
|
| 關(guān)鍵詞：
硝基腐植酸； 風(fēng)化煤； 碳納術(shù)管； 負載； 三氧化二鐵
|
| 中圖分類(lèi)號：0643.36 文獻標識碼：A 文章編號：1009-9212(2021)06-0058-04 |
|
|
Application of Carbon Nanotubes Supported Fe2O3 as Catalyst in the Preparation of Nitro-humic
Acid from Weathered Coal
|
|
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)
|
| 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.
|
| Key words：
nitro humic acid; weathered coal; carbon nanotubes; load; Fe203
|
|
基金項目：湖南省市場(chǎng)監督管理局科技項目（2020KJJH54)。
|
作者簡(jiǎn)介：
劉光鵬（1983—)，男，高級工程師，碩士，主要從事產(chǎn)品質(zhì)量和工藝的研究（E-mail lgpeng520@126.com)。
|
聯(lián) 系 人：肖穎，高級工程師，主要從事產(chǎn)品質(zhì)量和工藝的研究（E-mail 254383689@qq.com)。
|
收稿日期：2021-09-10
|
|