A kind of ethanol synthesis acetic acid catalyst and its preparation method and acetic acid preparation method
A catalyst and ethanol technology, which is applied in the direction of catalyst activation/preparation, carboxylate preparation, chemical instruments and methods, etc., can solve the problems of large amount of catalyst, low catalytic activity, low yield of acetic acid, etc., and achieve good catalytic performance, The effect of excellent catalytic performance, good application prospects and industrial production and application potential
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] Embodiment 1: Preparation of acetic acid catalyst by ethanol oxidation
[0040] S1: pretreating the carbon nanotubes to obtain pretreated carbon nanotubes; the steps are as follows:
[0041] Multi-walled carbon nanotubes (purchased from Shenzhen Nanometer Port Co., Ltd., with an outer diameter of 20-40 nm, a length of 5-15 μm, and a specific surface area of 80-140 m 2 / g) placed in concentrated nitric acid with an appropriate mass percent concentration of 66%, fully stirred at room temperature at 25°C for 60 minutes, then warmed up to 120°C and refluxed at this temperature for 6 hours, filtered, and fully washed with deionized water Filtrate until the eluate is neutral, and then completely vacuum-dry at 80°C to obtain the pretreated carbon nanotubes;
[0042] S2: Treat the pretreated carbon nanotubes with an aqueous hydrogen peroxide solution to obtain hydrogen peroxide-treated carbon nanotubes; the steps are as follows:
[0043] At room temperature, the pretreated ...
Embodiment 2
[0050] Embodiment 2: Preparation of acetic acid catalyst by ethanol oxidation
[0051] S1: pretreating the carbon nanotubes to obtain pretreated carbon nanotubes; the steps are as follows:
[0052] Multi-walled carbon nanotubes (purchased from Shenzhen Nanometer Port Co., Ltd., with an outer diameter of 20-40 nm, a length of 5-15 μm, and a specific surface area of 80-140 m 2 / g) placed in an appropriate amount of concentrated nitric acid with a concentration of 70% by mass, fully stirred at room temperature at 25°C for 50 minutes, then heated to 120°C and refluxed at this temperature for 6 hours, filtered, and fully washed with deionized water Filtrate until the eluate is neutral, and then completely vacuum-dry at 80°C to obtain the pretreated carbon nanotubes;
[0053] S2: Treat the pretreated carbon nanotubes with an aqueous hydrogen peroxide solution to obtain hydrogen peroxide-treated carbon nanotubes; the steps are as follows:
[0054] At room temperature, the pretrea...
Embodiment 3
[0061] Embodiment 3: Preparation of acetic acid catalyst by ethanol oxidation
[0062] S1: pretreating the carbon nanotubes to obtain pretreated carbon nanotubes; the steps are as follows:
[0063] Multi-walled carbon nanotubes (purchased from Shenzhen Nanometer Port Co., Ltd., with an outer diameter of 20-40 nm, a length of 5-15 μm, and a specific surface area of 80-140 m 2 / g) placed in concentrated nitric acid with an appropriate mass percent concentration of 68%, fully stirred at room temperature at 25°C for 55 minutes, then heated to 120°C and refluxed at this temperature for 6 hours, filtered, and fully washed with deionized water Filtrate until the eluate is neutral, and then completely vacuum-dry at 80°C to obtain the pretreated carbon nanotubes;
[0064] S2: Treat the pretreated carbon nanotubes with an aqueous hydrogen peroxide solution to obtain hydrogen peroxide-treated carbon nanotubes; the steps are as follows:
[0065] At room temperature, the pretreated car...
PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More