Material for trapping the unsaturated hydrocarbon in hydrocarbon raw materials
A capture material and unsaturated technology, which is applied in the field of unsaturated hydrocarbon adsorption materials, can solve the problem of unsatisfactory permeability of long-chain alkanes in the stability of capture materials, and achieve good desorption, service life and adsorption performance improved effect
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example 1
[0024] Diatomaceous earth (produced by Shandong Shanwang Chemical Co., Ltd.) is selected as the carrier, and the pore volume measured by the mercury intrusion porosimetry is 1.05mL / g, accounting for 95% of the pore volume of the pore diameter 6nm~10000nm. %, the specific surface area measured by low temperature nitrogen adsorption method is 5m 2 / g.
[0025] Take 20.0011 g of the above-mentioned carrier with a particle size of 200-300 μm, place it in 20 ml of an aqueous solution containing 0.01% by mass silver nitrate and 0.01% by mass platinum nitrate, evaporate and remove water, and dry at 120° C. for 2 hours to obtain a capture material, wherein the silver nitrate The content is 0.01% by mass, and the content of platinum nitrate is 0.01% by mass.
[0026] Pack the trapping material prepared above into a packed column tube with an inner diameter of 2mm and a length of 30mm. The desorption time of n-undecane was measured by gas chromatography at 140°C as 1.533 minutes, and t...
example 2
[0028] Take 2.0006 g of the diatomaceous earth carrier described in Example 1, place it in 10 ml of an aqueous solution containing 0.02 mass % silver nitrate and 0.02 mass % aluminum nitrate, evaporate to remove water, and dry at 120 ° C for 2 hours to obtain a capture material, wherein the silver nitrate The content is 0.1% by mass, and the content of aluminum nitrate is 0.1% by mass.
[0029] Pack the trapping material prepared above into a packed column tube with an inner diameter of 2mm and a length of 30mm. The desorption time of n-undecane was measured by gas chromatography at 140°C as 1.533 minutes, and the peak extraction time of butene was 6.577 minutes. .
example 3
[0031] The capture material is prepared according to the method of Example 1, except that the carrier is placed in 20 ml of an aqueous solution containing 1.98% by mass of copper nitrate and 0.02% by mass of rhodium nitrate, and the content of copper nitrate in the obtained capture material is 1.98% by mass , The content of rhodium nitrate is 0.02% by mass.
[0032] Pack the trapping material prepared above into a packed column tube with an inner diameter of 2mm and a length of 30mm. The desorption time of n-undecane was measured by gas chromatography at 140°C as 1.533 minutes, and the peak extraction time of butene was 4.328 minutes. .
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