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Kernel-containing boracic acid group absorptive and its preparing method

A boric acid-based and adsorbent technology, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of long residence time of adsorbate, increased pressure drop of adsorbent bed, and increased power consumption in the separation process, etc. The effect of solid phase mass transfer resistance, increased adsorption mass transfer rate, and high selectivity

Inactive Publication Date: 2008-07-23
ZHAOQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if one tries to use a particle adsorbent with a small diameter to increase the mass transfer coefficient on the adsorbent side, the pressure drop of the adsorbent bed layer will increase rapidly, which will cause a sharp increase in the power consumption of the separation process.
In addition, for multi-component separation, the adsorption capacity of the adsorbent is not as large as possible. If the adsorption capacity of the adsorbent is too large, it will cause the residence time of the adsorbate in the chromatographic column to be too long and the chromatographic peak will become wider, which will lead to the separation efficiency of the adsorbent. reduction of

Method used

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  • Kernel-containing boracic acid group absorptive and its preparing method
  • Kernel-containing boracic acid group absorptive and its preparing method
  • Kernel-containing boracic acid group absorptive and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment one: the preparation of adsorbent of the present invention

[0025] The preparation method of adsorbent of the present invention comprises the following steps:

[0026] A) Preparation of polystyrene matrix

[0027] Make the toluene of 0.6g benzoyl peroxide as initiator and 100ml as porogen and dissolve in 99g styrene monomer and 45g divinylbenzene (as cross-linking agent, its content is 55%) mixed solution, add 700ml Dissolve 0.5% polyvinyl alcohol in deionized water, stir rapidly and heat up to carry out cross-linking copolymerization reaction. The temperature was raised to 80°C within 1 hour and maintained for 2 hours; then raised to 90°C and maintained for 2 hours; finally reacted at 96°C for another 5 hours. The spheres were filtered out, washed with hot water, the resulting mixture was filtered, solid-phase centrifuged, washed, and vacuum-dried at 65°C to obtain polystyrene matrix uniform pellets without adsorption activity, with a particle size distribu...

Embodiment 2

[0032] Embodiment two: the preparation of adsorbent of the present invention

[0033] The preparation method of adsorbent of the present invention comprises the following steps:

[0034] A) Preparation of Nucleated Matrix:

[0035] Make the toluene of 0.6g benzoyl peroxide as initiator and 100ml as porogen and dissolve in 99g styrene monomer and 45g divinylbenzene (as cross-linking agent, its content is 55%) mixed solution, add 700ml Dissolve 0.5% polyvinyl alcohol in deionized water, then add glass or quartz balls (50g) with a diameter of about 1.0-1.5mm and roughened surface, stir rapidly and heat up to carry out cross-linking copolymerization reaction. The temperature was raised to 80°C within 1 hour and maintained for 2 hours; then raised to 90°C and maintained for 2 hours; finally reacted at 96°C for 5 hours (by adjusting the reaction time, different thicknesses can be obtained on the surface of the inert sphere) Polystyrene, after subsequent treatment, can obtain the n...

Embodiment 3

[0040] Example 3: Chromatographic separation experiment for preparation of glucose / maltotriose and fructose / maltotriose

[0041] (1) Experimental materials:

[0042] 1. Boric acid-based nucleated coordination adsorbent: prepared by the preparation method described in Example 1 and Example 2;

[0043] 2. Boric acid-based homogeneous coordination adsorbent: in the step B described in Example 1, the nitration time is long enough, and the polystyrene pellets are all nitrated, and the boric acid-based homogeneous coordination adsorbent is obtained through the subsequent treatment of step C ;

[0044] 3. Analytical pure glucose: Huakai Industrial Co., Ltd. (Shanghai);

[0045] 4. Fructose: Huakai Industrial Co., Ltd. (Shanghai);

[0046] 5. Maltotriose: Sigma (USA)

[0047] (2) Experimental process:

[0048] Take the above-mentioned boric acid-based nucleated coordination adsorbent or boric acid-based homogeneous phase, and wet-pack it into an adsorption column with an inner di...

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Abstract

The invention discloses a boracic base core adsorbent and preparing method, which is characterized by the following: adopting glass, quartz or polystyrene inert ball to prepare the absorbent without adsorbing ability, possessing certain thickness for case and high-degree coordination selection adsorbing ability and active porous dielectric structure for carbohydrate with cis-form dihydroxy, nitrating crosslinking polystyrene ball of glass or quartz core through reducing and after-disposing, or nitrating crosslinking polystyrene ball of glass or quartz core incompletely through reducing and after-disposing.

Description

technical field [0001] The invention belongs to the technical field of synthesis of adsorption and separation materials, and relates to an adsorbent for industrial preparation of chromatographic separation of sugars containing cis-dihydroxyl groups, in particular to a boric acid-based nucleated adsorbent and a preparation method of the adsorbent. Background technique [0002] Functional oligosaccharides, as a type of basic life substance sugar, have the functions of inhibiting the growth of cancer cells, anti-depression, improving human immunity and memory, and improving the micro-ecological environment of the human body. and other diseases have shown great potential. Due to the special structure and highly hydrophilic properties of monosaccharides and oligosaccharides, an economical technology for separating high-purity oligosaccharides from the mixture of monosaccharides and oligosaccharides has not been found so far. In the field of modern separation science and technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/281
Inventor 李湘郭海福吴燕妮
Owner ZHAOQING UNIV
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