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Aromatic ammoxidation fluidized bed catalyst, preparation method and application

A fluidized bed catalyst, ammoxidation technology, applied in the direction of hydrocarbon ammoxidation preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve high loss, poor catalyst activity, catalyst Poor wear resistance and other problems, to achieve the best wear resistance, good catalytic activity, and maintain the effect of stable progress

Active Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a highly wear-resistant aromatic hydrocarbon ammoxidation fluidized bed catalyst and a preparation method thereof to solve the problems of poor wear resistance, high loss and poor catalyst activity of existing catalysts

Method used

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  • Aromatic ammoxidation fluidized bed catalyst, preparation method and application
  • Aromatic ammoxidation fluidized bed catalyst, preparation method and application
  • Aromatic ammoxidation fluidized bed catalyst, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Catalyst preparation:

[0086] The 224g V 2 o 5 and 187 grams of Cr 2 o 3 Add it to a solution at a temperature of 80-90°C consisting of 980 ml of water and 912 g of oxalic acid, and stir thoroughly for 2 hours to obtain a mixed solution.

[0087] 283.6 grams of 85% phosphoric acid, 12.4 grams of KNO 3 , 71.6 g Co(NO 3 )·6H 2 A solution of O and 500 ml of water, 76.4 g of H 3 BO 3 and 500 ml of water and 43.5 g (NH 4 ) 6 Mo 7 o 24 4H 2 A solution of O and 100 ml of water with a concentration of 40% SiO by weight 2 1250 grams of silica sol was slowly added into the above-mentioned mixed solution containing vanadium and chromium under stirring, mixed and stirred for 2 hours, 59g of phosphotungstic acid, 21g of Zr(NO 3 ) 4 ·5H 2 O and 150 ml of water were added to the mixed solution and continued to stir for 1 h, heated and evaporated to a solid content of 40% (by weight) to obtain a thick slurry.

[0088] The above slurry was spray-dried in a spray dryer ...

Embodiment 2-20

[0092] Adopt the same method as Example 1 to prepare the catalyst, but adjust the addition of each component to obtain catalysts with different content compositions, test the catalyst wear rate respectively, the results are shown in Table 1 below; Table 2.

Embodiment 21

[0094] Catalyst preparation:

[0095] The 224g V 2 o 5 and 187 grams of Cr 2 o 3 Add it to a solution at a temperature of 80-90°C consisting of 980 ml of water and 912 g of oxalic acid, and stir thoroughly for 2 hours to obtain a mixed solution.

[0096] 283.6 grams of 85% phosphoric acid, 12.4 grams of KNO 3 , 71.6 g Co(NO 3 )·6H 2 O, 59g phosphotungstic acid, 21gZr(NO 3 ) 4 ·5H 2 A solution of O and 500 ml of water, 76.4 g of H 3 BO 3 and 500 ml of water and 43.5 g (NH 4 ) 6 Mo 7 o 24 4H 2 A solution of O and 100 ml of water with a concentration of 40% SiO by weight 2 1250 grams of silica sol were slowly added to the above-mentioned mixed solution containing vanadium and chromium under stirring, mixed and stirred for 2 hours, then 150 milliliters of water was added to the mixed solution and continued to stir for 1 hour, heated and evaporated to a solid content of 40% (by weight), to obtain Viscous slurry.

[0097] The above slurry was spray-dried in a spray...

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Abstract

The invention relates to a high-abrasion-resisting aromaticamm oxidation fluidized bed catalyst and a preparation method thereof. The technical problems of poor abrasion resistance properties, high in catalyst loss rate and high in production cost of an existing aromatic ammoxidation fluidized bed catalyst are mainly solved. The mixed catalyst of V1.0CraAbBcCdMeOx consists of a carrier and the compound shown as a chemical formula based on the atomic ratio, wherein A is selected from at least one of P, B, Bi, Sb and As elements, B is selected from at least one of Mn, Ni, Co, Ti, Sn, Mo or rare earth elements, C is selected from at least one of alkali metal or alkaline earth metal, M is selected from at least one of Zr and W. By the adoption of the technical scheme of the preparation method strictly controlling the component adding sequence, the abrasion resistance of the catalyst is effectively improved, and the obtained catalyst can be used for industrialized production of aromatic ammoxidation.

Description

technical field [0001] The invention relates to an aromatic hydrocarbon ammoxidation fluidized bed catalyst, a preparation method and application; in particular, it relates to a highly wear-resistant aromatic hydrocarbon ammoxidation fluidized bed catalyst, a preparation method and an application. Background technique [0002] Aromatic nitriles are an important class of fine chemicals, which can be used in the production of medicines, pesticides, dyes and special materials, and have a wide range of uses. For example, 2-cyano-4-nitroaniline, an important intermediate of multi-purpose azo disperse dyes, can be produced through nitration ammonolysis reaction of o-chlorobenzonitrile; biphenyl compound can be synthesized with halogenated benzene for the preparation of non-peptide anti-vascular Tensin can also prepare a variety of anti-inflammatory and bactericidal drugs; isophthalonitrile can be used to produce high-efficiency and low-toxicity bactericide tetrachloroisophthalonit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/199B01J23/30B01J23/34B01J23/888C07C253/28C07C255/50C07C255/51
CPCB01J23/002B01J23/30B01J23/34B01J23/8885B01J27/199B01J2523/00C07C253/28B01J2523/12B01J2523/305B01J2523/31B01J2523/41B01J2523/43B01J2523/48B01J2523/55B01J2523/67B01J2523/69B01J2523/13B01J2523/3712B01J2523/47B01J2523/53B01J2523/72B01J2523/52B01J2523/22B01J2523/54B01J2523/68B01J2523/845B01J2523/24C07C255/50C07C255/51
Inventor 杨为民顾龙勤曾炜陈亮徐俊峰
Owner CHINA PETROLEUM & CHEM CORP
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