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A method for degrading p-nitrophenol reduction

A technology of stirring and dissolving p-nitrophenol, which is applied in chemical instruments and methods, reduced water/sewage treatment, chemical/physical processes, etc., can solve the problems of multi-level pore synthesis and increase the temperature, and achieve high reactive sites effect of density

Active Publication Date: 2020-10-09
UNIV OF JINAN
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Problems solved by technology

In addition to pore size and surface area, pore structure also has an important impact on the reaction. In addition, compared with single-stage and few-stage pore structures, multi-stage pore molecular sieves have a wider range of applications and can produce greater economic value, but the corresponding Yes, the synthesis of multi-level pores is difficult to increase, and there are few reports on the synthesis of multi-level pore molecular sieves in the prior art

Method used

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  • A method for degrading p-nitrophenol reduction
  • A method for degrading p-nitrophenol reduction
  • A method for degrading p-nitrophenol reduction

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Embodiment 1

[0025] Pt 2 The preparation method of Ru / EMT-FAU / SBA-15 catalyst:

[0026] A. Add 0.35g sodium hydroxide, 1.04g sodium aluminate, 1.0g 18-crown-6, 0.034g sodium phosphate, 4.74g deionized water and 6.3g silica sol into the reaction kettle and stir at 25 degrees Celsius dissolved as solution I;

[0027] B. Add 0.12g 3-mercaptopropyltrimethoxysilane, 0.15g sodium hydroxide and 2g deionized water into the beaker and stir to dissolve, then add 1.8mL of H 2 PtCl 6 (100mol / L) and 0.9mL of RuCl 3 solution (100mol / L), as solution II;

[0028] C. Add solution II dropwise to solution I and stir for 3 hours, then age at 25 degrees Celsius for 24 hours, then transfer to a reaction kettle and crystallize at 100 degrees Celsius for 96 hours to obtain a PtRu / EMT-FAYU zeolite microcrystalline emulsion;

[0029] D. Add 2g of P123 organic matter to the hydrochloric acid solution to dissolve and disperse, add dropwise the tetraethyl orthosilicate of 4.28g and the PtRu / EMT-FAU zeolite microc...

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Abstract

The invention relates to a reduction method for degrading p-nitrophenol. The hierarchical porous molecular sieve composite catalyst PtRu / EMT-FAU / SBA-15 prepared by the present invention has excellent catalytic performance in the reduction reaction of degrading p-nitrophenol, and the results show that the ratio of elements in the PtRu alloy is higher than that of p-nitrophenol play an important role in the reduction reaction. The present invention utilizes microwave-assisted heating to successfully introduce PtRu alloy nanoparticles into the micropore channel of multi-stage molecular sieve EMT-FAU / SBA-15 with a specific blending microcrystalline emulsion synthesis method, and the PtRu alloy nano-particles prepared by this method Due to the confinement effect of molecular sieves, the particles have high stability and high reactive site density.

Description

technical field [0001] The invention relates to the field of degradation of organic pollutants, in particular to a method for degrading and reducing p-nitrophenol by using a multi-stage molecular sieve loaded PtRu catalyst. Background technique [0002] Among all toxic organic wastes, nitrophenol compounds are the most common and have high stability and solubility in water. Among all nitrophenol compounds, p-nitrophenol is one of the typical representatives. At present, the common treatment methods of p-nitrophenol waste mainly include electrocoagulation, microbial degradation, catalytic reduction and catalytic oxidation. Among them, the tetranitrophenol catalytic reduction method is currently the most commonly used and the most economical method, and its reduction product 4-aminophenol can also be used as a synthetic raw material for other commonly used compounds. Therefore, it is of great research significance to develop new catalysts for the reduction of p-nitrophenol w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/70B01J29/74C02F101/38C02F101/34
CPCB01J29/005B01J29/0325B01J29/7438B01J2229/18B01J2229/32C02F1/70C02F2101/345C02F2101/38
Inventor 高道伟吕一品李书娜陈国柱
Owner UNIV OF JINAN
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