基于铁盐催化体系的环己烷氧化反应研究

绘制环己烷和环己酮内标标准曲线时,要注意若直接用纯品配制系列标准溶液,进行色相色谱分析。


摘要:将环己烷氧化成环己酮的方法有很多,但没有一个方法是十全十美的,每一个方法都有优点与缺点。本文采用GoAggII体系进行环己烷氧化反应研究,研究中有两个创新点,为了防止环己酮被进一步氧化,增大环己烷与氧化剂H2O2碰撞概率,减少环己酮与氧化剂H2O2碰撞概率,研究过程中环己烷用量为过量;为了防止氧化剂H2O2分解,研究过程中氧化剂H2O2采取滴加加入。

本文采用气相色谱对实验结果进行定性和定量分析,通过绘制环己烷、环己酮内标标准曲线进行定量计算,得到环己烷的内标标准曲线方程为:ωi=0.02499Ai/As,环己酮的内标标准曲线方程为:ωi=0.02568Ai/As。

通过研究GoAggII体系氧化中反应时间、反应温度、铁盐催化剂种类、铁盐催化剂用量、环己烷用量、氧化剂H2O2用量六组因素对环己酮产率的影响,发现GoAggII体系环己烷氧化反应适宜的反应时间为1h,适宜的反应温度为50℃,适宜的铁盐催化剂为硫酸铁铵催化剂,适宜的铁盐催化剂用量为1mmol,适宜的环己烷用量为8mL,适宜的氧化剂H2O2用量为8mL。

关键词:环己烷;铁盐;催化;GoAggII体系

Study on Cyclohexane Oxidation Reaction Based on Iron Salt Catalytic System

Abstract: There are many ways to oxidize cyclohexane to cyclohexanone, but none of them are perfect. Each method has advantages and disadvantages. In this paper, the GoAggII system was used to study the cyclohexane oxidation reaction. There are two innovations in the study. To prevent cyclohexanone from being further oxidized, increase the collision probability between cyclohexane and oxidant H2O2, and reduce the collision probability between cyclohexanone and oxidant H2O2. During the study, the amount of cyclohexane was excessive; in order to prevent the decomposition of oxidant H2O2, the oxidant H2O2 was added dropwise during the study.

In this paper, qualitative and quantitative analysis of the experimental results using gas chromatography, by drawing the standard curve of cyclohexane, cyclohexanone internal standard quantitative calculation, to obtain the internal standard cyclohexane standard curve equation: ωi = 0.02499Ai / As, and the internal standard curve equation of hexanone is: ωi = 0.02568Ai/As.

By studying the reaction time of GoAggII system, the reaction temperature, the type of iron salt catalyst, the amount of iron salt catalyst, the amount of cyclohexane, the amount of oxidant H2O2 six groups of factors on the yield of cyclohexanone, found that cyclohexan oxidation of GoAggII system The suitable reaction time is 1 h, the suitable reaction temperature is 50℃, the suitable iron salt catalyst is ammonium iron sulfate catalyst, the suitable amount of iron salt catalyst is 1 mmol, the suitable amount of cyclohexane is 8 mL, and the suitable amount of oxidant H2O2 is 8 mL.

Key Words: cyclohexane;Iron salt;catalysis;GoAggII system

目录

摘要 IV

Abstract. V

1引言 1

1.1课题研究背景 1

1.2常见环己烷氧化工艺 1

1.2.1钴盐催化氧化法 1

1.2.2硼酸催化氧化法 1

1.2.3仿生催化氧化法 2

1.2.4分子筛催化氧化法 2

1.2.5无催化氧化法 3

1.2.6光催化氧化法 3

1.2.7纳米金属氧化物催化氧化法 4

1.3Gif体系 4

1.3.1Gif体系简介 4

1.3.2Gif体系家族的成员及其发展 5

1.3.3Gif体系反应机理 6

1.4本文立题依据 7

2实验材料及分析方法 9

2.1实验主要药品 9

2.1.1药品基本信息 9

2.1.2药品理化性质 9

2.2实验主要仪器 10

2.3实验方法 10

2.4实验分析方法 10

2.4.1定性分析方法 10

2.4.2定量分析方法 14

3铁盐催化体系环己烷氧化反应研究 18

3.1引言 18

3.2结果与讨论 19

3.2.1反应时间对环己酮产率的影响 19