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Preparation method of carbon oxysulfide synthesis catalyst and preparation method of carbon oxysulfide

A technology of carbon oxysulfide and carbon monoxide, which is applied in the direction of catalyst activation/preparation, carbon oxysulfide, metal/metal oxide/metal hydroxide catalysts, etc., which can solve the differences in product purity, difficulty in preparing metal salt catalysts, and constraints on COS Production and application issues, to achieve the effect of enhanced strength, convenient industrial production, and simple activation operation

Pending Publication Date: 2022-06-28
CAC NANTONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to literature reports, there are many types of catalysts, and the preparation of different metal salt catalysts is difficult, and the purity of the obtained products is quite different, among which the impurity CS2 is the most obvious, which restricts the further development of COS production and use

Method used

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  • Preparation method of carbon oxysulfide synthesis catalyst and preparation method of carbon oxysulfide

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Experimental program
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Effect test

Embodiment 1

[0058] The present embodiment provides a preparation method of a carbon oxysulfide synthesis catalyst, and the preparation method comprises the following steps:

[0059] (1) Place 100 g of red iron oxide and 30 g of water in a kneader, and knead at 40-60° C. for 150 min to obtain a kneaded product;

[0060] (2) Loading the kneaded product into the receiving tray, heating up and down in the receiving tray simultaneously, adjusting the extrusion frequency, starting the receiving tray heater, controlling the drying temperature at 90°C, extruding and drying the above-mentioned kneaded product, And through 8# sieve shaping, get shaping material;

[0061] A muffle furnace was used to set a temperature-programmed temperature, the shaping material was calcined, heated to 750°C at a temperature-programmed rate of 150°C / h, held for 10 hours, and then cooled down naturally to obtain a carbon oxysulfide synthesis catalyst.

Embodiment 2

[0063] The present embodiment provides a preparation method of a carbon oxysulfide synthesis catalyst, and the preparation method comprises the following steps:

[0064] (1) 100 g of red iron oxide and 35 g of aluminum dihydrogen phosphate solution are placed in a kneader, and kneaded at 30 to 60 ° C for 150 min to obtain a kneaded product;

[0065] (2) Load the kneaded product into the receiving tray, heat up and down in the receiving tray simultaneously, adjust the extrusion frequency, start the receiving tray heater, control the drying temperature at 100°C, and extrude and dry the above-mentioned kneaded product, And through 8# sieve shaping, get shaping material;

[0066] A muffle furnace was used to set a temperature-programmed temperature, the shaping material was calcined, heated to 750°C at a temperature-programmed rate of 120°C / h, held for 10 hours, and then cooled down naturally to obtain a carbon oxysulfide synthesis catalyst.

Embodiment 3

[0068] The present embodiment provides a preparation method of a carbon oxysulfide synthesis catalyst, and the preparation method comprises the following steps:

[0069] (1) Place 100 g of red iron oxide and 45 g of silica sol in a kneader, and knead at 40 to 60° C. for 150 min to obtain a kneaded product;

[0070] (2) Load the kneaded product into the receiving tray, heat up and down in the receiving tray simultaneously, adjust the extrusion frequency, start the receiving tray heater, control the drying temperature at 110°C, and extrude and dry the above-mentioned kneaded product, And through 8# sieve shaping, get shaping material;

[0071] A muffle furnace is used to set a temperature-programmed temperature, the shaping material is calcined, and the temperature is programmed to 750°C at a temperature-programmed rate of 140-180°C / h, maintained for 10 hours, and then naturally cooled to obtain a carbon oxysulfide synthesis catalyst.

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Abstract

According to the preparation method of the carbon oxysulfide synthesis catalyst provided by the invention, by strictly controlling the ratio, the kneading temperature and the calcining temperature of the catalyst, the catalyst with high selectivity can be prepared with a relatively short process and relatively low cost, and the strength of the catalyst is enhanced; when the catalyst is applied to preparation of carbon oxysulfide, the selectivity is high, the prepared carbon oxysulfide is high in purity, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to a preparation method of a carbon oxysulfide synthesis catalyst and a preparation method of carbon oxysulfide. Background technique [0002] Carbon oxysulfide, also known as carbonyl sulfide, or COS for short, is widely used in the production of pesticides, pharmaceuticals and other chemical products. High-purity COS can also be used in the processing of precision etching products for electronic sheet parts in the aviation, machinery and chemical industries. It is a synthetic thiocarbamate pesticide and an important pharmaceutical intermediate. Carbon oxysulfide occupies an important position in the production of pesticides such as oatmeal, oatmeal, chlorpyrifos, and fencaodi. At present, many domestic and foreign studies are using carbon oxysulfide as a fumigant for grains. This fumigant has good permeability and has a good poisoning effect on many pests, and has modera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J37/08C01B32/77
CPCB01J23/745B01J37/08B01J37/0009C01B32/77
Inventor 卞进平
Owner CAC NANTONG CHEM
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