Water-soluble porphyrin sulfonate-hyperbranched polymer two-phase composite catalyst and preparation and application thereof

A technology of hyperbranched polymer and composite catalyst, applied in the chemical industry, can solve problems such as being unfavorable for catalyst reuse and reducing catalytic effect, and achieve the effects of good catalytic activity and stability, strong catalytic stability and good catalytic activity

Inactive Publication Date: 2016-06-08
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using homogeneous water-soluble sulfonic acid porphyrin for catalytic reaction, inert dimers are easy to form in the solut...

Method used

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  • Water-soluble porphyrin sulfonate-hyperbranched polymer two-phase composite catalyst and preparation and application thereof
  • Water-soluble porphyrin sulfonate-hyperbranched polymer two-phase composite catalyst and preparation and application thereof
  • Water-soluble porphyrin sulfonate-hyperbranched polymer two-phase composite catalyst and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] water-soluble porphyrin sulfonate P 1 and hyperbranched polymer C 2 (n=323) as raw material, synthetic water-soluble sulfonic acid porphyrin-hyperbranched polymer P1 -C 2 :

[0036] as well as

[0037] This embodiment includes the following steps:

[0038] Step 1) Synthesis of tetraphenylporphyrin: In a 1000mL three-necked flask, add 30.9mL benzaldehyde and 500mL propionic acid, stir electrically and heat to reflux, control the temperature at 130°C, and use a dropping funnel to drop 20.9mL into Freshly distilled pyrrole in 100mL propionic acid (completely added dropwise within 30min), keep stirring at high speed, the solution gradually turns brownish black, continue to reflux for 40min, cool to 80°C, add 200mL ethanol while stirring, cool, and filter with suction. The product was obtained in 8.5 g, yield 18.4%.

[0039] Its characteristic parameters are: MSm / z614.74; IR (KBr): 3317, 1596, 1473, 1441, 969, 700cm -1 ; 1 HNMR200MHz (CDCl 3 ): δ-2.65(s, 2H, α-H)...

Embodiment 2

[0052] This embodiment is compared with embodiment 1, except that C 2 change to C 1 (n=257) or C 3 (n=383), that is, the two-phase interface catalyst by P 1 -C 2 Change to P 1 -C 1 or P 1 -C 3 Except, other is the same as embodiment 1, and the catalytic result of this embodiment is shown in table 2.

[0053] Table 2P 1 -C 2 ,P 1 -C 1 and P 1 -C 3 Catalytic Comparison of 1,5-Naphthalenediol

[0054]

[0055] For the comparison of the catalytic effects of two-phase interface catalysts prepared by hyperbranched polymers with different molecular weights on 1,5-naphthalenediol, it can be seen that when the molecular weight of hyperbranched polymers is moderate, it is C 2 When , its catalytic effect is the best, probably because when the molecular weight of the hyperbranched polymer is small, it is C 1 , its terminal group is less, which makes its solubility poor, which affects the combination with water-soluble sulfonic acid porphyrin, and then affects the full co...

Embodiment 3

[0057] This embodiment is compared with embodiment 1, except P 1 The concentration increased to 50μM, denoted as P 1 ’, others are the same as embodiment 1

[0058] The catalytic results of this embodiment are shown in Table 3. It can be seen that increasing water-soluble porphyrin sulfonate P 1 When the concentration is higher, the conversion rate will not change significantly, which may be because the porphyrin concentration increases, its arrangement is changed, and it is easy to agglomerate.

[0059] Table 3P 1 -C 2 with P 1 ’-C 2 Catalytic Comparison of 1,5-Naphthalenediol

[0060]

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Abstract

The invention provides a water-soluble porphyrin sulfonate-hyperbranched polymer two-phase composite catalyst and preparation and application thereof. The catalyst is used for the oxidation catalysis of 1,5-naphthalenediol two-phase interface catalytic system. The catalytic system comprises 0.1000% -0.1018% of a main catalyst, 0.0112%-0.1120% of an oxygen source and 0.003193% -0.003196% of a substrate. The catalytic system is simple for preparation and low in cost, has good catalytic stability; and after four rounds of experiments, the catalytic system still reaches a conversion rate of higher than 75%, and can effectively achieve the separation and recovery of the catalyst.

Description

technical field [0001] The invention relates to a technology in the field of chemical industry, in particular to a water-soluble sulfonic acid porphyrin-hyperbranched polymer two-phase composite catalyst and its preparation and application. Background technique [0002] At present, in the field of chemical industry and environment, the environmental pollution caused by the by-products of chemical reaction has been paid more and more attention by people. Among them, phenolic pollutants are the most harmful and refractory toxic pollutants in industrial wastewater, and their efficient and convenient treatment and degradation need to be solved urgently. The treatment of phenolic pollutants can be roughly divided into physical treatment, biological treatment and chemical treatment. Physical treatment has high requirements on experimental conditions and is not very specific; biological treatment has mild reaction conditions, but its efficiency is low and easy to inactivate; chemi...

Claims

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Application Information

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IPC IPC(8): B01J31/22C02F1/72C02F101/34
CPCY02W10/37B01J31/1825B01J31/063B01J35/065B01J2231/70C02F1/722C02F1/725C02F2101/345
Inventor 孙凯芳任奇志郭琳童
Owner SHANGHAI JIAO TONG UNIV
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