Solid carbon-based Anderson-type molybdenum contained heteropolyacid catalyst and application thereof

A technology of heteropoly acid and solid carbon, applied in the field of catalysis, can solve the problems of no obvious improvement in oxidation rate, low catalytic efficiency and high cost, and achieve the effects of reducing the cost of iodine recovery, improving catalytic performance and easy recovery.

Inactive Publication Date: 2019-12-03
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalytic efficiency of the currently used catalysts is relatively low, the recovery is poor, and the cost is high
For example, Chen Xiaohu et al. used sulfuric acid as a catalyst to catalyze the recovery of iodine oxidation, but the oxidation rate did not increase significantly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Catalyst preparation:

[0023] Put 1.000g of activated carbon and 5ml of 1,1-cyclobutanedicarboxylic acid benzene solution in a dilute acid solution with a pH of 3 prepared by sulfuric acid, add 0.2g of Anderson type ammonium zinc molybdate heteropolyacid, 1ml of N-methylpyrrolidone , magnetically stirred at room temperature for 24 hours, then ultrasonically oscillated for 1 hour, moved into a hydrothermal reaction kettle, and used a temperature-programmed oven to raise the reaction temperature from room temperature to 150°C within 1 hour, and maintained the temperature for 48 hours, and then naturally cooled to At room temperature, rinse with ultrapure water and ethanol several times, filter, and dry for 12 hours to obtain samples for later use.

[0024] Catalyst evaluation:

[0025] (1) The catalyst embodiment:

[0026] Dissolve 1.6667g of potassium iodide in an appropriate amount of deionized water, transfer it to a 100mL volumetric flask, and adjust the volume to ...

Embodiment 2

[0041] Catalyst preparation:

[0042] Put 1.000g of activated carbon and 5ml of 1,1-cyclobutanedicarboxylic acid benzene solution in a dilute acid solution with a pH of 3 prepared by sulfuric acid, add 0.2g of Anderson type ammonium iron molybdate heteropolyacid, 1ml of N-methylpyrrolidone , 0.04g of ferrous sulfate was magnetically stirred at room temperature for 24 hours, then ultrasonically oscillated for 1 hour, moved into a hydrothermal reaction kettle, and using a temperature-programmed oven, the reaction temperature was raised from room temperature to 150°C within 1 hour, and the temperature was maintained for 48 hours , and then cooled down to room temperature naturally, rinsed with ultrapure water and ethanol several times, filtered, and dried for 12 hours to obtain samples for later use.

[0043] Catalyst evaluation:

[0044] Dissolve 1.6667g of potassium iodide in an appropriate amount of deionized water, transfer it to a 100mL volumetric flask, and adjust the volu...

Embodiment example 3

[0046] Catalyst preparation:

[0047] 1.000g of multi-walled carbon nanotubes and 5ml of 1,1-cyclobutanedicarboxylic acid benzene solution are placed in a dilute acid solution with a pH of 3 prepared by sulfuric acid, and 0.2g of Anderson type ammonium zinc molybdate heteropolyacid is added, 1mlN -Methylpyrrolidone, 0.0456g of zinc sulfate, magnetically stirred at room temperature for 24h, then ultrasonically oscillated for 1h, moved into a hydrothermal reaction kettle, and used a temperature-programmed oven to raise the reaction temperature from room temperature to 150°C within 1 hour, keeping The temperature was kept for 48 hours, and then the temperature was naturally lowered to room temperature, washed several times with ultrapure water and ethanol respectively, filtered, and dried for 12 hours to obtain samples for later use.

[0048] Catalyst evaluation:

[0049] Dissolve 1.6667g of potassium iodide in an appropriate amount of deionized water, transfer it to a 100mL vol...

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PUM

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Abstract

The invention discloses a solid carbon-based Anderson-type molybdenum contained heteropolyacid catalyst and application thereof. The preparation steps of the solid carbon-based Anderson-type molybdenum contained heteropolyacid catalyst are that carbon porous materials and a carboxyl functional group coupling agent are added into a dilute acid solution with pH of 3-4, magnetic stirring is conductedat room temperature for 12-24 h, Anderson-type molybdenum contained heteropolyacid and a surfactant are added, ultrasonic vibration is conducted for 0.5-1 h, the mixture is transferred into a hydrothermal reactor, an oven with temperature programming is used for raising the reaction temperature from room temperature to 150-180 DEG C within 0.5-1 h, the temperature is kept for 48-72 h, then cooling naturally is conducted to the room temperature, the mixture is washed several times with ultrapure water and ethanol correspondingly, filtering is conducted, and drying is conducted for 10-12 h. According to the catalyst, hydrogen peroxide iodine oxide ions can be effectively catalyzed to form iodine simple substances under the heterogeneous conditions, the reaction conditions are mild, the utilization rate of the hydrogen peroxide is high, the catalyst is environment friendly, no pollution is achieved, no peroxide is achieved, the thermal stability is good, the catalyst can be reused for many times, and is easy to recycle.

Description

technical field [0001] The invention belongs to the field of catalysis, and in particular relates to a preparation and application method of a solid carbon-based Anderson type molybdenum-containing heteropolyacid catalyst for iodine recovery. Background technique [0002] Iodine is one of the scarce resources in the world, and it is also an important chemical raw material. Its chemical products are widely used in many industries such as food, medicine, dyes, metallurgy, synthetic rubber, agriculture, and national defense cutting-edge technology. There is no special iodine ore in nature, and it can only be extracted from other iodine-containing substances. The industrialized production of iodine is mainly based on the property of iodine that is easy to sublime, using oxidants to oxidize and recover iodine ions in raw materials such as seaweed and phosphate rock. With the development of the economy, the demand for iodine in traditional application fields continues to increase...

Claims

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Application Information

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IPC IPC(8): B01J23/28B01J23/881B01J27/188C01B7/14C01B7/16C02F9/04C02F101/12
CPCB01J23/28B01J23/881B01J23/002B01J27/188C01B7/14C01B7/16C02F1/722C02F1/725C02F1/66C02F2101/12
Inventor 郭军蔡丽丽解田史连军张丹李文飞
Owner WENGFU (GRP) CO LTD
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