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Integrated method for catalyzing condensation reaction of bromamine acid by using solid acid and degrading waste water produced by condensation reaction

A technology of solid acid catalysis and solid acid catalyst, applied in chemical instruments and methods, oxidized water/sewage treatment, chemical recovery, etc., can solve the problems of complicated separation process, difficult environmental restoration, environmental impact, etc., and achieve high catalytic activity, The effect of reducing the difficulty of wastewater treatment and simple preparation method

Inactive Publication Date: 2010-08-04
TIANJIN URBAN CONSTR COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The separation process of reactants in the preparation process is complicated, and the use of sulfuric acid in the reaction and the separation and purification of condensation products produce a large amount of pollutant-containing and dark wastewater with a pH value of about 4, which will cause direct or indirect damage to the environment. impact, and cause great difficulty to environmental restoration

Method used

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  • Integrated method for catalyzing condensation reaction of bromamine acid by using solid acid and degrading waste water produced by condensation reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] process 1

[0038] Weigh 1.0g of TiO 2 Powder, immersed in 15mL 0.75mol / L H 2 SO 4 Soak in aqueous solution for 24 hours, dry in a drying oven at 110°C, and calcinate at 500°C for 2 hours to obtain SO 4 2- / TiO 2 solid acid catalyst.

[0039] process 2

[0040] Weigh 10g of copper powder, add 50ml of 70% sulfuric acid solution, heat on the electric heating mantle, continue heating at 80°C for 1 hour after boiling, wash with water until neutral, then add 10ml of acetone to rinse, rinse three times and blow dry with nitrogen Copper powder, put the dry copper powder in a desiccator to prevent oxidation.

[0041] process 3

[0042] In a 250ml four-neck flask equipped with a thermometer, a stirrer, and a reflux condenser, add 2.02g (5mmol) of bromine, 0.95g (15mmol) of copper powder treated in the above process 2, 80.0ml of distilled water, and add SO 4 2- / TiO 2 0.1g, react at a constant temperature at 70°C for 90 minutes, filter out the solid acid catalyst and c...

Embodiment 2

[0044] process 1

[0045] Weigh 1.0g of TiO 2 Powder, immersed in 15mL 0.75mol / L H 2 SO 4 Soak in aqueous solution for 24 hours, dry in a drying oven at 110°C, and calcinate at 400°C for 2 hours to obtain SO 4 2- / TiO 2 solid acid catalyst.

[0046] process 2

[0047] Weigh 10g of copper powder, add 50ml of 70% sulfuric acid solution, heat on the electric heating mantle, continue heating at 80°C for 1 hour after boiling, wash with water until neutral, then add 10ml of acetone to rinse, rinse three times and blow dry with nitrogen Copper powder, put the dry copper powder in a desiccator to prevent oxidation.

[0048] process 3

[0049] In a 250ml four-necked flask equipped with a thermometer, a stirrer, and a reflux condenser, add 2.02g (5mmol) of bromine, 0.95g (15mmol) of copper powder treated in process 2, 80.0ml of distilled water, and add a solid acid catalyst SO 4 2- / TiO 2 0.2g, react at a constant temperature at 70°C for 90min, filter out the solid acid catal...

Embodiment 3

[0051] process 1

[0052] Weigh 1.0g of TiO 2 Powder, immersed in 15mL 0.75mol / L H 2 SO 4 Soak in aqueous solution for 24 hours, dry in a drying oven at 110°C, and calcinate at 500°C for 2 hours to obtain SO 4 2- / TiO 2 solid acid catalyst.

[0053] process 2

[0054] Weigh 10g of copper powder, add 50ml of 70% sulfuric acid solution, heat on the electric heating mantle, continue heating at 80°C for 1 hour after boiling, wash with water until neutral, then add 10ml of acetone to rinse, rinse three times and blow dry with nitrogen Copper powder, put the dry copper powder in a desiccator to prevent oxidation.

[0055] process 3

[0056] In a 250ml four-neck flask equipped with a thermometer, a stirrer, and a reflux condenser, add 2.02g (5mmol) of bromine, 0.95g (15mmol) of copper powder treated in process 2, 80.0ml of distilled water, and add SO 4 2- / TiO 2 0.2g, after constant temperature reaction at 60°C for 90min, filter out the solid acid catalyst and copper powde...

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Abstract

The invention provides an integrated method for catalyzing the condensation reaction of bromamine acid by using solid acid and degrading waste water produced by the condensation reaction. The method comprises the following steps of: preparing a solid acid catalyst SO42- / TiO2, forming a catalytic system of the condensation reaction of bromamine acid, forming an integrated system used for the catalysis of the condensation reaction of bromamine acid by using the solid acid catalyst SO42- / TiO2 and photocatalytic degradation of the waste water produced by the condensation reaction, and recycling the solid acid catalyst SO42- / TiO2. The integrated method has the advantages that: the method for preparing the solid acid catalyst SO42- / TiO2 is simple, the catalytic activity is high, the solid acid catalyst SO42- / TiO2 can be used for catalyzing the condensation reaction of bromamine acid for reducing a temperature needed for the reaction system, increasing a reaction yield, avoiding the use of solution H2SO4 and lowering difficulty in processing the production waste water in following steps, and the solid acid catalyst SO42- / TiO2 can be recycled after the reaction; and simultaneously, the production waste water used for the condensation reaction of bromamine acid is subjected to photocatalytic degradation, the decoloring rate of the production waste water is over 85 to 96.22 percent, the removal rate of TOC is 51 to 86 percent, the environmental pollution is lowered, and the integration of the solid acid catalysis reaction and the processing of the production waste water is realized.

Description

technical field [0001] The invention relates to the interdisciplinary field of dye synthesis and water treatment, in particular to an integrated method capable of effectively utilizing solid acid to catalyze the condensation reaction of bromic acid and the degradation of production wastewater. Background technique [0002] With the rapid development of my country's national economy, industries such as chemical industry, pharmaceuticals, oil refining, and papermaking are playing an increasingly important role in the national economy. At the same time, the pollution hazards brought by industrial development to the environment on which human beings depend have become increasingly prominent, and the relatively lagging development of industrial wastewater treatment technology has caused the limitations of sewage treatment, making my country's water environment face serious challenges. The dye synthesis industry is a major wastewater discharger. According to statistics, about 160 ...

Claims

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Application Information

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IPC IPC(8): C09B1/24C02F1/72C02F1/32
CPCY02P20/584
Inventor 费学宁刘玉茹王镝郝亚超徐晓娟
Owner TIANJIN URBAN CONSTR COLLEGE
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