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High-permeation flux polydimethylsiloxane porous-wall micro-capsule hybrid membrane and preparation method

The technology of polydimethylsiloxane and dimethylsiloxane is applied in the fields of high-permeation flux polydimethylsiloxane porous wall microcapsule hybrid membrane and preparation, and can solve the problem of high manufacturing cost, complicated Preparation process and other problems, to achieve the effect of excellent separation performance, high reactivity, and controllable microstructure

Inactive Publication Date: 2013-09-11
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these advantages generally come at the cost of complex preparation procedures and high manufacturing costs

Method used

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  • High-permeation flux polydimethylsiloxane porous-wall micro-capsule hybrid membrane and preparation method
  • High-permeation flux polydimethylsiloxane porous-wall micro-capsule hybrid membrane and preparation method
  • High-permeation flux polydimethylsiloxane porous-wall micro-capsule hybrid membrane and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare a solution with 3.50 g of anhydrous sodium carbonate and 100 ml of deionized water, and prepare a solution of 4.85 g of calcium chloride dihydrate with 100 ml of deionized water. In the process of vigorous stirring, the sodium carbonate solution was quickly poured into the calcium chloride solution, continued to stir for 30 s, and then stood still for 30 min, centrifuged and washed repeatedly with deionized water to obtain the calcium carbonate template. The prepared calcium carbonate template was dispersed into 100 ml of 0.02 mol / L Ti-BALDH solution, stirred for 2 h, centrifuged and washed repeatedly with deionized water. The resulting solid particles were added to 100 ml of hydrochloric acid-Tris acid-base buffer solution with a pH value of 7.5, a dopamine concentration of 8 g / L, and a Tris concentration of 6.06 g / L, and stirred for 30 min to obtain titanium oxide-dopamine-calcium carbonate particles. Prepare 400ml, 18.62 g / L EDTA solution, and adjust the pH ...

Embodiment 2

[0030] Prepare a solution with 3.50 g of anhydrous sodium carbonate and 100 ml of deionized water, and prepare a solution of 4.85 g of calcium chloride dihydrate with 100 ml of deionized water. In the process of vigorous stirring, the sodium carbonate solution was quickly poured into the calcium chloride solution, continued to stir for 30 s, and then stood still for 30 min, centrifuged and washed repeatedly with deionized water to obtain the calcium carbonate template. The prepared calcium carbonate template was dispersed into 100 ml of 0.02 mol / L Ti-BALDH solution, stirred for 2 h, centrifuged and washed repeatedly with deionized water. The resulting solid particles were added to 100 ml of hydrochloric acid-Tris acid-base buffer solution with a pH value of 7.5, a dopamine concentration of 8 g / L, and a Tris concentration of 6.06 g / L, and stirred for 30 min to obtain titanium oxide-dopamine-calcium carbonate particles. Prepare 400ml, 18.62 g / L EDTA solution, and adjust the pH ...

Embodiment 3

[0033]Prepare a solution with 3.50 g of anhydrous sodium carbonate and 100 ml of deionized water, and prepare a solution of 4.85 g of calcium chloride dihydrate with 100 ml of deionized water. In the process of vigorous stirring, the sodium carbonate solution was quickly poured into the calcium chloride solution, continued to stir for 30 s, and then stood still for 30 min, centrifuged and washed repeatedly with deionized water to obtain the calcium carbonate template. The prepared calcium carbonate template was dispersed into 100 ml of 0.02 mol / L Ti-BALDH solution, stirred for 2 h, centrifuged and washed repeatedly with deionized water. The resulting solid particles were added to 100 ml of hydrochloric acid-Tris acid-base buffer solution with a pH value of 7.5, a dopamine concentration of 8 g / L, and a Tris concentration of 6.06 g / L, and stirred for 30 min to obtain titanium oxide-dopamine-calcium carbonate particles. Prepare 400ml, 18.62 g / L EDTA solution, and adjust the pH v...

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Abstract

The invention relates to a high-permeation flux polydimethylsiloxane porous-wall micro-capsule hybrid membrane and a preparation method. The preparation method comprises the following steps of: preparing a DA-Ti hybrid porous-wall micro-capsule by using a template method and the process of biological mineralization in a restricted space; dissolving polydimethylsiloxane with a certain mass ratio in normal heptane at room temperature so as to form a homogeneous solution, and then adding the DA-Ti hybrid porous-wall micro-capsule into the solution; stirring and dispersing the suspension liquid; then adding a certain quantity of crosslinking agent and catalyst, and stirring, standing and defoaming to obtain a membrane casting solution; and then casting the membrane casting solution on a dry polysulfone basic membrane, and drying and treating to obtain the membrane. The hybrid membrane is used for simulating gasoline desulfurization, the enrichment factor of the thiophene is 4.29 to 5.89, and the permeation flux is 1.90 to 8.09 kg / (m<2>h). The preparation conditions of the hybrid membrane are mild, and raw materials are abundant and controllable.

Description

technical field [0001] The invention relates to a separation membrane, in particular to a polydimethylsiloxane porous wall microcapsule hybrid membrane with high permeation flux and a preparation method thereof. Background technique [0002] In recent years, my country's gasoline production has been steadily increasing year by year. Taking 2000~2007 as an example, gasoline production rose from more than 40 million tons in 2000 to nearly 60 million tons in 2007. Catalytically cracked gasoline (FCC) is a by-product of the catalytic cracking process. It has a high octane number (research method octane number can reach 99, and motor method octane number can reach 85), which is a good high octane Value gasoline blending components, but it contains a relatively high sulfur content (its sulfides mainly exist in the form of mercaptans, sulfides, disulfides and thiophenes, and the content of thiophenes sulfur accounts for more than 60% of the total sulfur content, The content of su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/70B01D61/36B01D67/00C10G31/11
Inventor 姜忠义刘万鹏潘福生吴洪胡申
Owner TIANJIN UNIV
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