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Ceramic article, carrier for catalyst, methods for production thereof, catalyst for producing ethylene oxide using the carrier, and method for producing ethylene oxide
Ceramic article, carrier for catalyst, methods for production thereof, catalyst for producing ethylene oxide using the carrier, and method for producing ethylene oxide
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机译:陶瓷制品,催化剂载体,其制备方法,使用该载体制备环氧乙烷的催化剂以及制备环氧乙烷的方法
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摘要
A ceramic article is disclosed which contains aluminum, silicon, and titanium in a total amount of at least 99% by weight as reduced to the oxides (Al2O3+SiO2+TiO2) and assumes an acidic color in methyl red, an indicator of at least pKa+4.8. It can be used as a carried for a catalyst. This ceramic article is obtained by mixing an aluminum compound, a silicon compound, and a titanium compound and calcining the resultant mixture at a temperature in the range of 1,000°-2,000° C. A catalyst for preparing ethylene oxide is obtained by depositing silver and a reaction promoter on the ceramic carrier and ethylene oxide is obtained by oxidizing ethylene with a molecular oxygen-containing gas in the presence of the catalyst in vapor phase.
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机译:公开了一种陶瓷制品,其包含铝,硅和钛,该铝,硅和钛的总量被还原为氧化物(Al 2 Sub> O 3 Sub> + SiO 2 Sub> + TiO 2 Sub>),并呈甲基红色的酸性,指示色至少为pKa + 4.8。它可用作催化剂的载体。该陶瓷制品是通过将铝化合物,硅化合物和钛化合物混合并将所得混合物在1,000℃至2,000℃范围内的温度下煅烧而获得的。通过在催化剂的存在下在气相中用含分子氧的气体氧化乙烯,可以得到陶瓷载体和环氧乙烷上的反应促进剂。
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