Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2006-03-28
2006-03-28
Dentz, Bernard (Department: 1625)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
Reexamination Certificate
active
07018950
ABSTRACT:
A process for producing a specific titanium-containing silicon oxide catalyst having a specific average pore diameter, a specific a pore diameter distribution and a specific pore volume per unit weight, which comprises the following first to second steps:first step: a step of obtaining a solid containing a catalyst component and a template by mixing and stirring a silica source, a titanium source and, as the template, the quaternary ammonium ion, wherein an amount of an alkali metal in the mixture prepared is within a range of the following expression (II) or (III),in-line-formulae description="In-line Formulae" end="lead"?alkali metal/titanium≦3(mol/mol) (II)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?alkali metal/[NR1R2R3R4]+≦0.3(mol/mol) (III); andin-line-formulae description="In-line Formulae" end="tail"?second step: a step of removing the template from the solid prepared in the first step.
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Dentz Bernard
Sughrue & Mion, PLLC
Sumitomo Chemical Company Limited
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