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Modified macroporous material and preparation method thereof

A macroporous material and modification technology, applied in chemical instruments and methods, other chemical processes, inorganic chemistry, etc., can solve problems such as single pore structure, achieve the effects of cheap raw materials, improved pore properties, and high strength

Active Publication Date: 2020-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when volcanic rock is used as a carrier material, its porosity is mainly used, but the pores of volcanic rock raw materials are mostly micron-scale channels, and the pore structure is relatively simple.

Method used

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  • Modified macroporous material and preparation method thereof
  • Modified macroporous material and preparation method thereof
  • Modified macroporous material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 50 grams of volcanic rock and place it in a beaker, add 500 mL of aluminum nitrate solution with a mass concentration of 30% to the beaker and soak for 1 hour to make the volcanic rock adsorb and saturate. The roasted material was impregnated twice in the same way.

[0029] Weigh 10 grams of the above-mentioned treated volcanic rock and place it in 55 grams of ammonium bicarbonate aqueous solution with a mass concentration of 18.5%, transfer the mixed material into an autoclave and seal it, heat it at 140°C for 5.5 hours, and then dry the carrier at 110°C for 6 hours The modified macroporous material A1 was obtained by roasting at 600°C for 4 hours. The properties of the material are shown in Table 1. The scanning electron microscope photos are as follows: figure 2 , 3 As shown,.

Embodiment 2

[0031] With embodiment 1, just the mass concentration of aluminum nitrate is 35%, and the consumption of ammonium bicarbonate solution is 65 grams during heat treatment, and the mass concentration of solution is 21.5%. The heat treatment temperature was 130° C., and the treatment time was 6.5 hours. The modified macroporous material A2 was prepared, and the properties of the material are shown in Table 1.

Embodiment 3

[0033] Same as Example 1, except that the mass concentration of aluminum nitrate is 40%, the number of times of impregnating aluminum salt is 2 times, the consumption of ammonium bicarbonate solution is 75 grams during heat treatment, and the mass concentration of solution is 15.5%. The heat treatment temperature was 120° C., and the treatment time was 7.5 hours. The modified macroporous material A3 was obtained, and the properties of the material are shown in Table 1.

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Abstract

The invention discloses a modified macroporous material and a preparation method thereof. The material comprises a volcanic rock matrix and prismatic aluminum oxide distributed in the pore channels ofthe matrix; based on the weight of the modified macroporous material, the volcanic rock accounts for 50-90 wt%, and the prismatic alumina accounts for 10-50 wt%; and the prismatic aluminum oxide fills in the pore channels in a staggered manner. The preparation method of the modified macroporous material comprises the following steps: (1) impregnating volcanic rock particles with an aluminum saltsolution, and drying and roasting the impregnated material; and (2) immersing the material roasted in the step (1) into an ammonium bicarbonate solution, carrying out sealed heat treatment, and dryingand roasting the material having been subjected to heat treatment so as to obtain the modified macroporous material. The modified macroporous material provided by the invention has richer pore channel structures, a large amount of prismatic aluminum oxide is distributed in the pore channel, and penetrability is good; the preparation method is simple and convenient; the raw materials are cheap; and the modified macroporous material is applicable as a catalyst carrier or an adsorbing material.

Description

technical field [0001] The invention relates to the field of preparation of inorganic materials, in particular to a modified macroporous material and a preparation method thereof. Background technique [0002] Volcanic rock (basalt) is a porous stone formed after a volcanic eruption. The magma erupted during the eruption includes gas slag, solid magma, and brilliant stone. The temperature and pressure dropped rapidly, and chemical and physical changes occurred, so the magma became volcanic rock. Volcanic rock contains a large amount of minerals such as silicon, potassium, sodium, iron, magnesium, copper, zinc, chromium, nickel, manganese, etc. It is inert, corrosion-resistant, can withstand hydraulic shearing of different strengths, has a long service life, and has high porosity As a new type of material, it has received more and more attention due to its large specific surface area. [0003] CN104549355A discloses the application of a volcanic rock as a titanium dioxide p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30B01J21/16B01J32/00C01F7/02
CPCB01J20/10B01J20/103B01J20/08B01J21/16C01F7/02B01J2220/4806B01J2220/42Y02W10/37
Inventor 季洪海凌凤香王少军张会成沈智奇
Owner CHINA PETROLEUM & CHEM CORP
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