Preparation method of dimethyl sulfone as well as used catalyst and catalyst composition thereof

A catalyst and composition technology, which is applied in the preparation of organic compounds, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of large usage of catalysts, increased production costs, and difficulty in refining products. and other problems, to achieve the effect of low cost, mild conditions and easy operation

Active Publication Date: 2013-04-17
GENIFARM LAB INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The yield of this process is low, the waste gas and waste water are more, and the product is not easy to be refined
In addition, CN1397533A uses a transition metal complex catalyst to prepare dimethyl sulfone with only air as an oxidant, but needs to add

Method used

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  • Preparation method of dimethyl sulfone as well as used catalyst and catalyst composition thereof
  • Preparation method of dimethyl sulfone as well as used catalyst and catalyst composition thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 16g of ferric oxide, 17.4g of manganese dioxide, 24g of titanium oxide, 2.5g of rhodium oxide and 1.3g of ruthenium oxide, mix them in an oven at 100°C for 10 hours, and grind them evenly to obtain Fe 2 o 3 2MnO 2 ·3TiO2 2 0.1Rh 2 o 3 0.1RuO 2 .

Embodiment 2

[0037] Weigh 8.7g of manganese dioxide, 8g of titanium oxide, 1.3g of rhodium oxide and 0.6g of ruthenium oxide, mix them in a muffle furnace at 250°C for 5 hours, and grind them evenly to obtain MnO 2 ·TiO 2 0.05Rh 2 o 3 0.05RuO 2 .

Embodiment 3

[0039] Weigh 1.3g of rhodium oxide and 1.3g of ruthenium oxide, mix them and place them in a muffle furnace for activation at 300°C for 3 hours, cool and grind them evenly to obtain 0.5Rh 2 o 3 ·RuO 2 .

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Abstract

The invention belongs to the field of organic synthetic chemistry, and in particular relates to a preparation method of dimethyl sulfone as well as used catalyst and catalyst composition thereof. The general formula of the catalyst is aFe2O3.bMnO2.cTiO2.dRh203.eRuO2, wherein a, b and c are selected from 0 to 15 independently, and d and e are selected from 0.01 to 10 independently. The catalyst composition comprises the catalyst and photosensitizer with the mass ratio of 1:0.01 to 10. The catalyst/catalyst composition has efficient catalytic activity, oxygen is taken as single oxidant during a process of catalyzing dimethylsulfide or dimethyl sulfoxide to prepare dimethyl sulfone, and compared with a conventional nitric acid technique and a potassium permanganate method, the preparation method has the advantages that during preparation, any hazardous substances can not be caused, and pollution is not caused to the environment.

Description

technical field [0001] The invention belongs to the field of organic synthetic chemistry, and more specifically relates to a preparation method of dimethyl sulfone, a catalyst used therein and a catalyst composition. Background technique [0002] Dimethyl sulfone, also known as Methyl Sulfonyl Methane (MSM), is an organic sulfide, which is a necessary substance for the synthesis of collagen in the human body. Once it is deficient, it will cause health disorders or diseases. At the same time, it is industrially used as a high-temperature solvent and raw material for organic synthesis, as a stationary liquid for gas chromatography, as an analytical reagent, as a food additive and as a drug. The synthesis of dimethyl sulfone is from the oxidation of dimethyl sulfide or dimethyl sulfoxide. [0003] According to research reports, there are mainly several production methods for dimethyl sulfone: 1. Synthesize with nitric acid as the oxidant and dimethyl sulfoxide as the main raw ...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J23/656B01J23/46B01J31/38C07C317/04C07C315/02
Inventor 黄志鹏王永东祝诗发操基元高庆程稳
Owner GENIFARM LAB INC
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