Oxalic ester hydrogenated copper silicon catalyst and preparation method thereof
A technology of catalyst and oxalate, which is applied in molecular sieve catalysts, chemical instruments and methods, preparation of hydroxyl compounds, etc., to achieve the effects of easy large-scale production, high dispersion of copper, and simple preparation process
Inactive Publication Date: 2011-06-15
XIAMEN UNIV
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The invention discloses an oxalic ester hydrogenated copper silicon catalyst and a preparation method thereof, and relates to a catalyst used in preparation of ethylene glycol by using oxalic ester hydrogenation. The invention provides the silicon-aluminum molecular sieve promoted oxalic ester hydrogenated copper silicon catalyst with environmental friendliness, high activity and high thermal stability for synthesizing the ethylene glycol by oxalic ester hydrogenation and a preparation method thereof. The catalyst comprises copper, silicon dioxide and silicon-aluminum molecular sieve, the composition of the catalyst is expressed as x%Cu/SiO2-y% silicon-aluminum molecular sieve, in the formula, x% expresses the mass percentage of the copper in the catalyst, and y% expresses the mass percentage of the silicon-aluminum molecular sieve in the catalyst. The catalyst comprises the following components in percentage by mass: 5 to 60 percent of Cu, 0.5 to 30 percent of silicon-aluminum molecular sieve, and the balance of SiO2. The preparation method comprises the following steps of: preparing a catalyst precursor, and reducing the catalyst precursor under hydrogen-containing atmosphere toobtain the oxalic ester hydrogenated copper silicon catalyst.
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