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Preparation method and application of iron oxide compound supported nitrogen carbon nanotube (feox/cnx) catalyst

A technology for the preparation of iron oxide compounds and catalysis, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of reusable performance that need further research, and achieve The effect of solving equipment corrosion, easy recycling, and reducing the generation of waste water

Inactive Publication Date: 2016-06-08
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Bioprocessing, 2010, 6(8): 10-13, Preparation of K by impregnation method 2 CO 3 / γ-Al 2 o 3 Supported solid base catalyst, the physical and chemical properties of the catalyst were characterized by X-ray diffraction (XRD) and thermogravimetric analysis (DSC-TGA), and the reaction performance of the catalyst in the preparation of biodiesel by transesterification of palm oil and methanol was investigated; the results showed that: Components have been successfully loaded onto the carrier γ-Al 2 o 3 above, and during the high temperature roasting process K 2 CO 3 and γ-Al 2 o 3 There is an interaction between; in K 2 CO 3 Under the conditions of loading capacity of 22.6%, alcohol-oil molar ratio of 12:1, reaction time of 3 hours, catalyst mass fraction of 3%, and reaction temperature of 65°C, the yield of methyl ester can reach up to 91.60%, but the reusability needs to be further studied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of microwave-assisted iron oxide compound loaded nitrogen carbon nanotube (FeOx / CNx) catalyst comprises the following steps:

[0031] 1) Put the Fe / SBA-15 molecular sieve into the porcelain boat, and heat the quartz tube furnace to 800-1200K, then feed the Ar / organic amine mixture at 50ml / min, keep the temperature for 0.5-1.5h, and then cool it naturally , to obtain the mixture of black CNx nanotubes and Fe / SBA-15 catalyst;

[0032] 2) adding the mixture of black CNx and Fe / SBA-15 catalyst to HF dilute solution to remove the Fe / SBA-15 molecular sieve in the mixture of step 1) gained, to obtain black CNx nanotubes;

[0033] 3) Weigh 5 g of the black CNx nanotubes obtained in step 2) in an ethylene glycol solution, and stir evenly by ultrasonic magnetic force to obtain the first solution;

[0034] 4) At normal temperature and pressure, 20 g of ferric acetate is added to the first solution prepared in step 3), and fully stirred to obtain the second ...

Embodiment 2

[0042] The preparation method of microwave-assisted iron oxide compound loaded nitrogen carbon nanotube (FeOx / CNx) catalyst comprises the following steps:

[0043] 1) Put the Fe / SBA-15 molecular sieve into the porcelain boat, heat the quartz tube furnace to 800-1200K, then feed the Ar / organic amine mixture at 100ml / min, keep the temperature for 0.5-1.5h, and then cool naturally, that is Obtain the mixture of black CNx nanotube and Fe / SBA-15 catalyst;

[0044] 2) remove the Fe / SBA-15 molecular sieve in the mixture of step 1) gained in the mixture of black CNx and Fe / SBA-15 catalyst in HF dilute solution, obtain black CNx nanotube;

[0045] 3) Weigh 6g of the black CNx nanotubes obtained in step 2) in a glycerol solution, and stir evenly with ultrasonic magnetic force to obtain the first solution;

[0046] 4) At normal temperature and pressure, 22g of ferric acetate was added to the first solution prepared in step 3), and fully stirred to obtain the second solution;

[0047] 5...

Embodiment 3

[0054] The preparation method of microwave-assisted iron oxide compound loaded nitrogen carbon nanotube (FeOx / CNx) catalyst comprises the following steps:

[0055] 1) Put the Fe / SBA-15 molecular sieve into the porcelain boat, heat the quartz tube furnace to 800-1200K, then feed the Ar / organic amine mixture at 150ml / min, keep the temperature for 0.5-1.5h, then cool naturally, that is Obtain the mixture of black CNx nanotube and Fe / SBA-15 catalyst;

[0056] 2) remove the Fe / SBA-15 molecular sieve in the mixture of step 1) gained in the mixture of black CNx and Fe / SBA-15 catalyst in HF dilute solution, obtain black CNx nanotube;

[0057] 3) Weigh a certain amount of 8g of the black CNx nanotubes obtained in step 2) in the ethylene glycol solution, and stir evenly with ultrasonic magnetic force to obtain the first solution;

[0058] 4) At normal temperature and pressure, 24g of ferric acetate was added to the first solution prepared in step 3), and fully stirred to obtain the sec...

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PUM

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Abstract

The invention discloses a preparation method and an application of an iron-oxide-loading nitrogen-carbon nano-tube (FeOx / CNx) catalyst. The preparation method comprises the following steps: black CNx nano-tubes are prepared; the prepared black CNx nano-tubes are dissolved into polyol; after ultrasonic dispersion, a mineralizing agent is added, and the mixture is placed into an autoclave; the temperature is maintained for 8-30h under a temperature of 100-250 DEG C; and washing and drying are carried out, such that the (FeOx / CNx) catalyst is obtained. A method for preparing bio-diesel by using the catalyst comprises the following steps: methanol, a co-solvent, and the (FeOx / CNx) catalyst are added into soy-bean oil; the mixture is subjected to a reaction for 20-120min under a temperature of 30-120 DEG C; the mixture is allowed to stand and is stratified; an upper-layer substance is washed to neutral; and drying and filtering are carried out, such that a product is obtained. The catalyst provided by the invention is easy to recover, and has high catalytic efficiency and good stability. The catalyst can be repeatedly used.

Description

technical field [0001] The present invention relates to a microwave-assisted iron oxide compound-loaded nitrogen-carbon nanotube (FeOx / CNx) catalyst, in particular to a preparation method of a microwave-assisted iron-oxide compound-loaded nitrogen-carbon nanotube (FeOx / CNx) catalyst and the (FeOx / CNx) catalyst CNx) catalyst catalyzes the method for preparing biodiesel. Background technique [0002] Biodiesel is a fatty acid methyl ester compound prepared from animal and vegetable oils or waste oils with high acid value as raw materials and methanol under the action of a catalyst. It is a clean green renewable energy source; vigorously developing biodiesel is beneficial to sustainable economic development It is of great strategic significance to promote energy substitution, reduce environmental pressure, and control urban air pollution; catalyst is one of the key factors affecting biodiesel production; heterogeneous solid catalyst is a reusable, easy-to-separate catalyst that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745C11C3/04C11C3/10C10L1/02
CPCY02E50/10
Inventor 李奕怀朱路平王利军邴乃慈汪玲玲奚慧杰袁阔李靖
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY