Process for preparing ethylene oxide catalysts
AssigneeShell Oil Company
InventorMarek Matusz
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Abstract
This invention relates to a process for the preparation of a catalyst suitable for the production of ethylene oxide which process comprises depositing a promoting amount of a salt of a rare earth metal and a promoting amount of a salt of an alkaline earth metal and/or a salt of a Group VIII transition metal on a porous, refractory support, calcining the support, and thereafter depositing a catalytically effective amount of silver, a promoting amount of alkali metal, and optionally, a promoting amount of rhenium and/or a promoting amount of a rhenium co-promoter selected from sulfur, molybdenum, tungsten, chromium, phosphorus, boron and mixtures thereof, on the support, and subsequently drying the support.
Claims52
A process for preparing a catalyst suitable for the vapor phase production of ethylene oxide from ethylene and oxygen which process comprises depositing a promoting amount of a salt of a rare earth metal and a promoting amount of a salt of a metal selected from the group consisting of an alkaline earth metal, a Group VIII transition metal and mixtures thereof, on a support having a surface area in the range of from about 0.05 m.sup.2 /g to about 10 m.sup.2 /g, calcining the support, and thereafter depositing a catalytically effective amount of silver and a promoting amount of alkali metal on said support, and thereafter drying the support.
A process for preparing a catalyst suitable for the vapor phase production of ethylene oxide from ethylene and oxygen which process comprises depositing a promoting amount of a salt of a rare earth metal and a promoting amount of a salt of a metal selected from the group consisting of an alkaline earth metal, a Group VIII transition metal and mixtures thereof, on a support having a surface area in the range of from about 0.05 m.sup.2 /g to about 10 m.sup.2 /g, calcining the support, and thereafter depositing a catalytically effective amount of silver, a promoting amount of alkali metal and a promoting amount of rhenium on said support, and thereafter drying the support.
A process for preparing a catalyst suitable for the vapor phase production of ethylene oxide from ethylene and oxygen which process comprises depositing a promoting amount of a salt of a rare earth metal and a promoting amount of a salt of a metal selected from the group consisting of an alkaline earth metal, a Group VIII transition metal and mixtures thereof, on a support having a surface area in the range of from about 0.05 m.sup.2 /g to about 10 m.sup.2 /g, calcining the support, and thereafter depositing a catalytically effective amount of silver, a promoting amount of alkali metal, a promoting amount of rhenium and a rhenium co-promoter on said support, and thereafter drying the support.
Dependencies are inferred from the claim text.