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Gas-chromatography packed column carrier and preparing process thereof

A gas chromatography and packed column technology, applied in the field of gas chromatography packed column carrier and its preparation, can solve the problems of alkane adsorption that have not been reported before, and achieve the effect of solving the problem of high carbon number alkane adsorption

Inactive Publication Date: 2004-08-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the invention application with the application number of 02130784.9, the applicant discloses an adsorption material and its application as an olefin trap. The adsorption material is formed by depositing silver salt on aluminosilicate, preferably diatomaceous earth , when this material is used as an olefin trap, it has the advantages of large capacity and good reversibility, which solves the penetration and desorption problems of olefins, but still has the problem of adsorption of high-carbon alkanes
[0005] The carrier of gas chromatography packed column, especially when it is used as olefin trapping material, the structure of the carrier is an important factor affecting the separation effect of alkanes and olefins, but there is no report on this aspect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 20 parts by weight of water to 91 parts by weight of raw mineral diatomite (Shandong Linqu, Shanwang Chemical Co., Ltd.) powder, mix well, shape and dry, then sinter at 900°C for 7 hours, and cool in an aqueous solution while it is hot . Filter and dry, pulverize with a ball mill, sieve with 60-80 mesh, wash with distilled water until no carrier powder appears, and dry.

[0018] As determined by mercury porosimetry, the pore volume of pores with a pore diameter of 50nm to 10000nm is 0.92mL / g, accounting for 98% of the pore volume of pores with a pore diameter of 6nm to 10000nm. 2 / g.

Embodiment 2

[0020] Other operations were the same as in Example 1 except that the temperature was changed to 950°C.

[0021] As determined by mercury porosimetry, the pore volume of pores with a pore diameter of 50nm to 10000nm is 0.80mL / g, accounting for 92% of the pore volume of pores with a pore diameter of 6nm to 10000nm. 2 / g.

Embodiment 3

[0023] Except changing temperature 1000 ℃ and washing and adopting 5% hydrochloric acid solution, other operation is identical with embodiment 1.

[0024] As determined by mercury porosimetry, the pore volume of pores with a pore diameter of 50nm to 10000nm is 0.76mL / g, accounting for 97% of the pore volume of pores with a pore diameter of 6nm to 10000nm. 2 / g.

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Abstract

The gaseous chromatographic packed column carrier features the total volume of pores in 50-10000 nm size being 0.76-0.95 mL / g and 78-98 % that of pores in 6-10000 nm size, the probable pore size of 800-1700 nm and specific pore surface area of 1-25 sq m / g. The carrier is prepared with natural diatomite and through cooling, crushing, sieving, washing and drying. When the carrier is used in gaseous chromatographic packed column, the problem of adsorbing high-carbon alkanes may be solved.

Description

technical field [0001] The invention relates to a gas chromatography packed column carrier and a preparation method thereof, and more particularly relates to a carrier used for olefin trapping materials and a preparation method thereof. Background technique [0002] Due to its unique porous structure and good surface properties, diatomaceous earth is widely used as a carrier for gas chromatography packed columns and for some special separations. Regarding the preparation of diatomite used as a chromatographic carrier, in Introduction to Chromatography (edited by Da Shilu, Wuhan University Press, December 1999, p226), the preparation method described is to mix diatomite and binder Calcined at 900°C. [0003] The diatomaceous earth carrier is used in multi-dimensional chromatography to trap olefins to achieve the separation of alkanes and olefins, and to determine the composition of gasoline. For example, Martin reported in Anal.Chem.34: 896, 1962 that the mercury perchlorat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04G01N30/02
Inventor 高秀香徐广通陆婉珍
Owner CHINA PETROLEUM & CHEM CORP
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