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Antimonial ammoxidation catalyst

A catalyst, ammoxidation technology, applied in the direction of physical/chemical process catalyst, hydrocarbon ammoxidation preparation, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of low yield of isophthalonitrile and difficult catalyst Adapt to fluidized bed requirements, expensive raw materials and other issues, to achieve the effect of improving reaction selectivity, reducing the cost of three wastes treatment, and reducing unit consumption

Active Publication Date: 2013-04-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that the previous catalysts are difficult to adapt to the fluidized bed requirements, expensive raw materials need to be used, and the yield of the target product isophthalonitrile is not high. A new method for preparing isophthalonitrile is provided. Fluidized bed catalyst of dicarbonitrile

Method used

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  • Antimonial ammoxidation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Catalyst preparation:

[0050] 201 g V 2 o 5 Add it into a solution at a temperature of 80-90° C. consisting of 440 milliliters of water and 420 grams of oxalic acid, stir well, and react to obtain a vanadium oxalate solution.

[0051] 40% (weight) SiO 2 1250 grams of silica sol was slowly added to the above solution under stirring, and then 505 grams of antimony ammonium oxalate [2(NH 4 ) 3 Sb(C 2 o 4 ) 3 2H 2 O] and 300 milliliters of water solution, 68.6 grams of H 3 BO 3 and 560 ml of water and 117.6 g (NH 4 ) 6 Mo 7 o 24 4H 2 A solution consisting of O and 50 ml of water, 0.11 molar phosphoric acid solution, and finally 9.4 g of NaNO 3 A solution composed of 20 ml of water was stirred and mixed, heated and evaporated to a solid content of 42% by weight to obtain a thick slurry.

[0052] The above slurry is sprayed and formed, the gas inlet temperature of the sprayer is 250°C, the outlet temperature is 130°C, the formed catalyst is dried at 130°C for...

Embodiment 2～14

[0060] Catalyst preparation method is the same as embodiment 1, changes the composition or proportioning of catalyst, by catalyst evaluation condition in embodiment 1, evaluation result is listed in following table 1.

[0061] Table 1

[0062]

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Abstract

The invention relates to an antimonial ammoxidation catalyst which mainly solves the problem that in the prior art the catalyst is difficult to adapt for the requirement of a fluidized bed and requires raw materials with higher price and the target outcome m-phthalonitrile has low yield. The antimonial ammoxidation catalyst comprises a catalyst active component which is a combination with the following chemical formula by atomic ratio: V1.0SbaAbBcCdOx, wherein A is at least one type of metal out of lithium, sodium, kalium or rubidium or cesium; B is at least one type of metal out of magnesium, calcium, barium, chrome, tungsten, molybdenum, manganese, iron, cobalt, nickel or tin; and C is at least one type of metal out of boron or phosphor. The technical scheme better solves the problem and can be used for industrial production.

Description

technical field [0001] The invention relates to a catalyst for preparing isophthalonitrile by ammoxidation containing antimony. Background technique [0002] Isophthalonitrile (abbreviated as IPN) is an important organic raw material for organic synthesis, and tetrachloroisophthalonitrile (chlorothalonil) synthesized by chlorination is a high-efficiency, low-toxic anti-mold fungicide; it is obtained by hydrogenation The m-xylylenediamine (MXDA) is an epoxy resin curing agent with superior performance, and is also a raw material for polyurethane resin and nylon resin. [0003] The simplest and most economical production method of isophthalonitrile is obtained by gas-phase ammoxidation of m-xylene under the action of a catalyst, and its core technology is the catalyst. [0004] In the 1950s, Japan’s Showa Denko developed the production technology of m-xylene ammoxidation in a fixed bed to synthesize isophthalonitrile. In the 1970s, Japan’s Mitsubishi Gas Co., Ltd. and the US ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/199B01J27/198B01J23/28C07C255/51C07C253/28
Inventor 顾龙勤陈亮
Owner CHINA PETROLEUM & CHEM CORP
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