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Ethylene oxide catalyst
Silver catalytic system for direct oxidation of ethylene to ethylene oxide
Description
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▎Product overview
The ethylene oxide catalyst is designed for the direct oxidation of ethylene with oxygen, and the industry standard is a silver catalyst system. The description should emphasize “high selectivity, low propensity for side reactions, proven industrial technology and stability in continuous operation.” The industrial route for producing ethylene oxide by ethylene oxidation has existed since 1931, and almost all industrial production is based on direct oxidation using a silver catalyst.
▎Process description
Ethylene reacts with oxygen or air on a silver catalyst to form ethylene oxide. The description should highlight the industrial maturity of the silver catalyst system in the ethylene epoxidation reaction, as well as its key role in ensuring selectivity and suppressing side reactions.
▎Key Benefits
• Proven industrial technology based on silver
• Optimized for direct ethylene epoxidation
• Emphasis on selectivity and stability of operation
• Suitable for large continuous installations
• Effectively suppresses adverse reactions
▎Main technical characteristics
• Ethylene oxide selectivity
• Ethylene conversion
• Control of reaction heat
• Catalyst life
• Layer stability
• Control of by-product formation
▎Typical Applications
• Ethylene oxide production plants
• Ethylene glycol production chain
• Product chain for further processing of ethylene oxide
The key value of this catalyst is to provide highly selective industrial epoxidation of ethylene in a silver catalyst system, rather than simple “oxidation” per se.
▎Frequently Asked Questions
Question: Why are catalysts for the production of ethylene oxide typically silver?
Answer: Because the most mature and widely used direct oxidation route in industry is the epoxidation of ethylene on a silver catalyst.
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