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Mesoporous catalytic material containing phosphorus, magnesium and rare earth

A catalytic material and rare earth compound technology, applied in the field of mesoporous catalytic materials, can solve the problems of poor cracking activity, high price, large steric hindrance effect, etc., and achieve the effect of high cracking activity and low yield of heavy oil

Active Publication Date: 2015-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this molecular sieve is that it needs to use an expensive template agent, and the pore size is only about 2.7nm. It still has a large steric hindrance effect on the cracking reaction of macromolecules. The structure is easy to collapse under high temperature hydrothermal conditions, and the cracking activity is low Difference

Method used

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  • Mesoporous catalytic material containing phosphorus, magnesium and rare earth
  • Mesoporous catalytic material containing phosphorus, magnesium and rare earth

Examples

Experimental program
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Effect test

Embodiment 1

[0029] This example illustrates the preparation of the mesoporous catalytic material provided by the present invention.

[0030] Take Al 2 (SO 4 ) 3 The solution and ammonia water are used as the reaction raw materials, and the glue is formed by batch co-flow, the gelation temperature is 45°C, the gelation pH is 10.5, the glue is collected into a liquid and water glass is added in proportion, and the temperature is raised to 60°C for 3 hours; after filtering and washing , according to the dry basis of the precipitate: ammonium salt: H 2 Add NH at a weight ratio of O=1:1:10 4 Cl and deionized water were exchanged for 1 h at 65 °C to Na 2 The O content is washed to below 0.3%; then the obtained solid precipitate is calculated according to the dry basis of the precipitate: H 2 O=1:8 weight ratio mixed with water for beating, and press P 2 o 5 :MgO:Material dry basis=0.016:0.021:1 Add phosphoric acid and magnesium chloride at a weight ratio of 1, then react at 60°C for 2 ho...

Embodiment 2

[0033] This example illustrates the preparation of the mesoporous catalytic material provided by the present invention.

[0034] The preparation process is the same as in Example 1, wherein the solid precipitate after the ammonium exchange is on a dry basis: RE 2 o 3 :H 2 O=1:0.031:8 weight ratio mixed with mixed rare earth chloride and water, then reacted at 60°C for 1 hour, filtered and washed, and then pressed P 2 o 5 : MgO: material dry basis = 0.010:0.015:1 weight ratio directly mixed with phosphoric acid and magnesium chloride, ground evenly, dried at 120°C for 15 hours, and then calcined at 600°C for 2 hours to obtain the mesoporous catalytic material provided by the present invention. Recorded as PRM-2.

[0035] PRM-2 has a pseudo-boehmite phase structure, and its X-ray diffraction pattern is the same as figure 1 Characteristic shown; its elemental analysis chemical composition is 0.08Na 2 O·73.4Al 2 o 3 20.6SiO2 2 1.0P 2 o 5 1.5MgO 3.0RE 2 o 3 ; Specific ...

Embodiment 3

[0037] This example illustrates the preparation of the mesoporous catalytic material provided by the present invention.

[0038] The preparation process is the same as in Example 1, wherein the solid precipitate after the ammonium exchange is re-pulped, and then pressed on a dry basis: P 2 o 5 :MgO:RE 2 o 3 =1:0.025:0.035:0.015 weight ratio Add ammonium dihydrogen phosphate, magnesium chloride and mixed rare earth chloride solution into the slurry, react at 70°C for 2 hours, filter and wash with water, and dry at 120°C for 15 hours to obtain The mesoporous catalytic material provided by the invention. Recorded as PRM-3.

[0039] PRM-3 has a pseudo-boehmite phase structure, and its X-ray diffraction pattern is the same as figure 1 Characteristic shown; its elemental analysis chemical composition is 0.11Na 2 O·59.2Al 2 o 3 33.2SiO2 2 2.3P 2 o 5 3.4MgO 1.5RE 2 o 3 ; Specific surface area 377m 2 / g, pore volume 0.98cm 3 / g, the average pore diameter is 10.4nm.

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Abstract

The invention provides a mesoporous catalytic material containing phosphorus, magnesium and rare earth. The material is characterized in that the material has a pseudo-boehmite phase structure; the anhydrous compound composition of the material is, in terms of the weight of oxides, (0-0.2)Na2O.(40-85)Al2O3.(10-55)SiO2.(0.5-10)P2O5.(0.5-5)MgO.(0.5-5)RE2O3; the specific surface area of the material is 200 to 500 m2 / g; the total pore volume is 0.5 to 1.5 cm3 / g; and the average pore size is 8 to 18 nm.

Description

technical field [0001] The invention relates to a mesoporous catalytic material, in particular to a modified mesoporous catalytic material. Background technique [0002] As a petroleum refining process, catalytic cracking is widely used in the petroleum processing industry. As the most important process in the secondary processing of crude oil, this process is the main production method of liquefied petroleum gas, gasoline, kerosene and diesel oil. In refineries occupies an important position. In catalytic cracking and hydrocracking processes, heavy fractions such as vacuum distillates or residues of heavier components are reacted in the presence of catalysts to convert them into gasoline, distillates and other liquid cracking products as well as lighter four-carbon The following gaseous cracking products usually require the use of catalytic materials with high cracking activity during these reactions. [0003] Microporous zeolite catalytic materials are widely used in pet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/06B01J37/00C10G11/05
Inventor 郑金玉罗一斌慕旭宏舒兴田
Owner CHINA PETROLEUM & CHEM CORP
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