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Improved process for the oxidative dehydrogenation of ethane

A carbon monoxide and carbon dioxide technology, applied in chemical instruments and methods, carbon monoxide, carbon monoxide reaction preparation, etc., can solve the problems of high cost and expensive ethylene

Inactive Publication Date: 2010-05-26
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because of the high costs associated with these methods of producing ethylene, and because ethylene is a relatively expensive feedstock, more economical alternatives are needed

Method used

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  • Improved process for the oxidative dehydrogenation of ethane
  • Improved process for the oxidative dehydrogenation of ethane
  • Improved process for the oxidative dehydrogenation of ethane

Examples

Experimental program
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Embodiment

[0020] Preparation of potassium-manganese oxide catalyst

[0021] The OMS catalyst was prepared using the following steps: In a separate container, 16.8 g of MnSO 4 ·H 2 O and 6 mL concentrated HNO 3 Dissolved in 60 ml of distilled water, 11.8 g of KMnO 4 Dissolve in 200 ml distilled water. Then, the KMnO 4 The solution was added dropwise to MnSO 4 In solution, a light brown colloidal suspension was produced. The colloidal suspension was refluxed at 100°C for 12 hours. The product formed was filtered and washed with deionized water to remove unwanted reaction by-products. Finally, the material was dried in an oven at 120°C for 6-12 hours.

[0022] Place the synthesized K-OMS-2 in a tube furnace at 800 °C at a flow rate of 500 cm 3 / min of nitrogen for 2 hours. The formed material was used as a carrier material. The Fe-loaded catalyst was obtained by impregnating 1.5 g of the support material in 1.06 g of 1M Fe(NO 3 ) 3 .9H 2 O aqueous solution, and shake on a sh...

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PUM

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Abstract

A method for producing a mixture of ethylene and carbon monoxide comprises contacting ethane and an oxygen source with a catalyst comprising synthetic cryptomelane or octahedral molecular sieve. The method further comprises reacting ethylene with an alcohol to produce an alkyl propionate, which can further react with formaldehyde to produce an alkyl methacrylate.

Description

technical field [0001] This invention relates to an improved catalytic process for the preparation of ethylene and carbon monoxide mixtures from ethane and carbon dioxide, and to various combined processes for the preparation of alkyl propionates or methacrylates from ethane and carbon dioxide. Background technique [0002] A mixture of ethylene and carbon monoxide can be used as a raw material for the homologation of ethylene to propionic acid derivatives. For example, carbonylation of ethylene to produce methyl propionate followed by condensation with formaldehyde is an important industrial route to methyl methacrylate. For example, US Patent No. 6,284,919 discloses a process for the carbonylation of ethylene to methyl propionate. In the first step of the process, ethylene, CO and methanol feedstocks are converted to methyl propionate. The ethylene and CO feedstocks used are generally obtained from conventional sources such as steam cracking and methane steam reforming. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/04C07C5/48C01B31/18B01J29/16C07C67/38C07C69/24C07C67/343C07C69/54C08F20/14C08G67/02C07C47/02C07C45/49C07C47/22C07C45/75C01B32/40
CPCC07C5/42C07C67/38C07C45/75C07C45/50C07C67/343C07C2529/04Y02P20/52C07C11/04C07C47/02C07C47/22C07C69/54C07C69/24C07C5/333C07C67/39
Inventor S·汉金磊D·J·马特奈克S·L·苏彼
Owner ROHM & HAAS CO
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