酸处理对 KF/AC 催化合成洁净高效灭火剂 CF3I 的影响

taptap下载安装安卓学报 ›› 2024, Vol. 42 ›› Issue (1): 24-29.

酸处理对 KF/AC 催化合成洁净高效灭火剂 CF3I 的影响

周晓猛1，任立恒1，彭智敏2，3，王刚2，3，陈文胜2，3，刘建1，闫浩1

（1.taptap下载安装安卓民航热灾害防控与应急重点实验室，天津300300；2.湖南有色郴州氟化学有限公司，湖南郴州423042；3.湖南省伴生萤石综合回收利用氟化工工程技术研究中心，湖南郴州423042）

收稿日期:2022-08-30 修回日期:2022-11-23 出版日期:2024-12-19 发布日期:2024-12-19
作者简介:周晓猛（1975—），男，山东济宁人，教授，博士，研究方向为清洁高效关键技术、灭火剂开发应用以及动力学灭火机理研究，先进热安全材料制备及评价技术.

Effects of acid treatment on the catalytic synthesis of clean and efficient fire extinguishing agent CF3I by KF/AC#br#

ZHOU Xiaomeng1 , REN Liheng1 , PENG Zhimin2,3 , WANG Gang2,3 , CHEN Wensheng2,3 , LIU Jian1 , YAN Hao1

(1. Key Laboratory of Civil Aviation Thermal Hazards Prevention and Emergency Response, CAUC, Tianjin 300300, China;
2. Hunan Nonferrous Chenzhou Fluorine Chemical Co., Ltd., Chenzhou 423042, Hunan, China;
3. Technology Research Center of Hunan Province for Comprehensive Utilization of Associated Fluorite and
Fluorine Chemical Engineering, Chenzhou 423042, Hunan, China)

Received:2022-08-30 Revised:2022-11-23 Online:2024-12-19 Published:2024-12-19

摘要/Abstract

摘要： 为了探究催化剂制备过程中不同酸处理对催化性能的影响，降低三氟碘甲烷（CF3I）生产成本以推进其作为
灭火剂在民航领域的应用，采用无机酸（HNO3、HCl、H2SO4）和有机酸（CH3COOH、CF3COOH、C6H8O7）分别对
活性炭（AC，activated carbon）进行预处理，以处理后的 AC 作为载体制备一系列 KF/AC 催化剂，研究其在
相同工况下催化合成的性能（以 CF3I 收率计）。结果表明：除柠檬酸（C6H8O7）外，无机酸和有机酸处理均会
使 AC 微孔孔容增加；不同酸处理均会增加 AC 表面羧基和催化剂碱性位点数量；K 元素在微孔中的负载
量对催化剂的性能起关键作用；有机酸处理可使微孔负载量达到未处理催化剂的 3 倍以上，效果明显优于
无机酸处理；三氟乙酸（CF3COOH）处理对催化性能提升最明显。

关键词: 机载灭火剂, 活性碳, 酸处理, 微孔负载量, 氟化钾, 三氟碘甲烷

Abstract: In order to explore the effects of different acid treatments on catalytic performance during catalyst preparation, and
reduce the production cost of trifluoroiodomethane (CF3I) to promote its application as a fire extinguishing agent in
the field of civil aviation, inorganic acids (HNO3, HCl, H2SO4) and organic acids (CH3COOH, CF3COOH, C6H8O7)
were used to pretreat activated carbon (AC), and a series of KF/AC catalysts were prepared using the treated AC as
a carrier. The catalytic synthesis performance under the same operating conditions was measured by CF3I yield.
The results showed that both inorganic acid and organic acid treatment will increase the AC micropore volume, ex鄄
cept for citric acid (C6H8O7). Different acid treatments will increase the number of carboxyl groups on the AC sur鄄
face and alkaline sites of catalyst. The microporous loading of K played a key role in the performance of catalysts.
Organic acid treatment can increase the microporous loading to three times more than that of untreated catalysts,
and the effect was significantly better than that of inorganic acid treatment. The treatment with trifluoroacetic acid
(CF3COOH) showed the most significant improvement of the catalytic performance.

Key words: font-size:15.04px, ">airborne fire extinguishing agent, activated carbon, acid treatment, microporous loading, potassium fluoride, trifluoroiodomethane (CF3I)

中图分类号:

V259

周晓猛, 任立恒, 彭智敏, 王刚, 陈文胜, 刘建, 闫浩. 酸处理对 KF/AC 催化合成洁净高效灭火剂 CF3I 的影响[J]. taptap下载安装安卓学报, 2024, 42(1): 24-29.

ZHOU Xiaomeng , REN Liheng , PENG Zhimin, , WANG Gang, , CHEN Wensheng, , LIU Jian , YAN Hao. Effects of acid treatment on the catalytic synthesis of clean and efficient fire extinguishing agent CF3I by KF/AC#br#[J]. Journal of Civil Aviation University of China, 2024, 42(1): 24-29.