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COMPOSITION BASED ON ZIRCONIUM OXIDES, CERIUM, AT LEAST ONE RARE EARTH METAL DIFFERENT FROM CERIUM, AND SILICON, METHODS FOR PRODUCING AND APPLICATION IN CATALYSIS
COMPOSITION BASED ON ZIRCONIUM OXIDES, CERIUM, AT LEAST ONE RARE EARTH METAL DIFFERENT FROM CERIUM, AND SILICON, METHODS FOR PRODUCING AND APPLICATION IN CATALYSIS
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机译：基于铈氧化物，铈，铈中至少一种稀土金属和硅的组成，制备方法及在催化中的应用
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1. Composition based on zirconium oxide, cerium oxide and at least one rare earth oxide other than cerium, with a weight content of zirconium oxide of at least 5% and cerium oxide of not more than 90%, characterized in that it further comprises silicon dioxide in an amount by weight of from 0.1% to 2% .2. A composition according to claim 1, characterized in that it contains silicon dioxide in an amount by weight of from 0.1% to 1%, preferably from 0.1% to 0.6%. 3. A composition according to claim 1, characterized in that it is characterized by a cerium oxide content of from 30% to 60%, preferably from 5% to 20%. The composition according to any one of paragraphs. 1-3, characterized in that it is characterized by the content of oxides of one or more rare earth metals other than cerium, from 5% to 25% .5. The composition according to any one of paragraphs. 1-3, characterized in that it has a specific surface after firing for 4 hours at 1000 ° C of at least 30 m / g. 6. The composition according to any one of paragraphs. 1-3, characterized in that it has a specific surface after firing for 4 hours at 1100 ° C of at least 10 m / g. 7. The composition according to any one of paragraphs. 1-3, characterized in that after firing for 4 hours at 1000 ° C and then firing for 10 hours at 1200 ° C, it is characterized by a decrease in oxygen storage capacity (OSC) of at least 80%, more specifically at least at least 90% .8. A composition according to claim 1 or 2, characterized in that after firing for 4 hours at 1000 ° C, it has an OSC of at least 0.6 ml O / g with a cerium oxide content of from 30% to 60% and an OSC of at least 0.2 ml O / g with a cerium oxide content of from 5% to 15% or at least 70% .9. The composition according to any one of paragraphs. 1-3, characterized in that after firing for 4 hours at 1000 ° C and then firing for 10 hours�
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机译：1.基于氧化锆，氧化铈和除铈以外的至少一种稀土氧化物的组合物，其特征在于，氧化锆的重量含量为至少5％且氧化铈的含量不超过90％，其特征在于，其还包含硅二氧化碳的含量为0.1％至2％的重量2。 2.根据权利要求1的组合物，其特征在于其包含重量百分比为0.1％至1％，优选为0.1％至0.6％的二氧化硅。 3.根据权利要求1的组合物，其特征在于其氧化铈含量为30％至60％，优选5％至20％。根据段落中任一项的组合物。 1-3，其特征在于，其特征在于除铈以外的一种或多种稀土金属的氧化物的含量为5％至25％.5。根据段落中任一项的组合物。 1-3，其特征在于，其在1000℃下烧制4小时后的比表面至少为30m / g。 6.根据段落任一的组合物。 1-3，其特征在于，其在1100℃下烧制4小时后的比表面至少为10m / g。 7.根据段落任一的组合物。 1-3，其特征在于在1000℃下燃烧4小时然后在1200℃下燃烧10小时之后，其特征在于储氧能力（OSC）降低了至少80％，更具体地至少至少90％.8。 3.根据权利要求1或2所述的组合物，其特征在于，在1000℃下烧制4小时后，其OSC为至少0.6ml O / g，氧化铈含量为30％至60％，且OSC为0.5％。至少0.2 ml O / g，氧化铈含量为5％至15％或至少70％.9。根据段落中任一项的组合物。 1-3，其特征在于在1000°C烧制4小时后再烧制10小时。
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