Catalyst Supports Having Crystalline Support Modifiers
AssigneeCelanese International Corporation
InventorsHeiko Weiner, Victor J. Johnston
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Abstract
A catalyst comprising a first metal, a silicaceous support, and at least one metasilicate support modifier, wherein at least 1 wt. % of the at least one metasilicate support modifier is crystalline in phase, as determined by x-ray diffraction. The invention also relates to processes for forming such catalysts, to supports used therein, and to processes for hydrogenating acetic acid in the presence of such catalysts.
Claims29
A catalyst comprising a first metal, a silicaceous support, and at least one metasilicate support modifier, wherein at least 0.5 wt. % of the metasilicate support modifier is in a crystalline phase, as determined by XRD.
A support for a hydrogenation catalyst, the support comprising,
- a silicaceous support material;
- and
- a metasilicate support modifier, wherein at least 0.5 wt. % of the metasilicate support modifier is in a crystalline phase, as determined by XRD.
A process for preparing a catalyst, the process comprising the steps of:
- (a) contacting a first metal precursor to a first metal with a modified silicaceous support to form an impregnated support, wherein the modified silicaceous support comprises a silicaceous material and at least one metasilicate support modifier, the at least one metasilicate support modifier comprising at least 0.5 wt. % crystalline metasilicate, as determined by XRD;
- and
- (b) heating the impregnated support under conditions effective to reduce the first metal and form the catalyst.
A process for producing ethanol, comprising hydrogenating acetic acid in the presence of a catalyst comprising a first metal, a silicaceous support, and at least one metasilicate support modifier, wherein at least 0.5 wt. % of the metasilicate support modifier is in a crystalline phase, as determined by XRD.
Dependencies are inferred from the claim text.