Composition of Aluminium Oxide and Cerium Oxide

    公开(公告)号:US20250114772A1

    公开(公告)日:2025-04-10

    申请号:US18293416

    申请日:2022-07-25

    Abstract: The invention relates to a composition which is a composition C1 which is based on Al and Ce in the form of oxides; or a composition C2 which is based on Al, Ce and La in the form of oxides with the following proportions of CeO2 is between 5.0 wt % and 35.0 wt %; La2O3 (for composition C2 only) is between 0.1 wt % and 6.0 wt %; the remainder being Al2O3; and exhibiting a specific porosity profile and exhibiting the following properties of a mean size of the crystallites after calcination in air at 1100° C. for 5 hours (denoted D1100° C.-5h) which is lower than 45.0 nm; a mean size of the crystallites after calcination in air at 900° C. for 2 hours (denoted D900° C.-2h) which is lower than 25.0 nm; and an increase ΔD of the mean size of the crystallites lower than 30.0 nm, ΔD being calculated with the following formula: ΔD=D1100° C.-5h−D900° C.-2h; the mean size of the crystallites being obtained by XRD from the diffraction peak of the cubic phase corresponding to cerium oxide, generally present at 2θ between 28.0° and 30.0°.

    COMPOSITION OF ALUMINIUM OXIDE AND CERIUM OXIDE WITH A PARTICULAR POROSITY PROFILE

    公开(公告)号:US20240253019A1

    公开(公告)日:2024-08-01

    申请号:US18564390

    申请日:2022-05-09

    Abstract: The present invention relates to a composition based on Al and Ce in the form of oxides (composition C1); or based on Al, Ce and La in the form of oxides (composition C2), with the following proportions: —the proportion of CeO2 is between 3.0 wt % and 35.0 wt %; —the proportion of La2O3 (for composition C2 only) is between 0.1 wt % and 6.0 wt %; —the remainder as Al2O3; exhibiting the following porosity profile: —a pore volume in the range of pores with a size of between 5 nm and 100 nm which is between 0.35 and 1.00 mL/g; and—a pore volume in the range of pores with a size of between 100 nm and 1000 nm which is less than or equal to 0.15 mL/g, these pore volumes being determined by means of the mercury porosimetry technique; and the following properties: —a mean size of the crystallites after calcination in air at 1100° C. for 5 hours (denoted D1100° C.-5 h) which is lower than 45.0 nm, preferably lower than 40.0 nm; —a mean size of the crystallites after calcination in air at 900° C. for 2 hours (denoted D900° C.-2 h) which is lower than 25.0 nm, preferably lower than 20.0 nm, even more preferably lower than 15.0 nm; and—an increase ΔD of the mean size of the crystallites lower than 30.0 nm, preferably lower than 25.0 nm, ΔD being calculated with the following formula: ΔD=D1100ºC-2h-D900C-5h; the mean size of the crystallites being obtained by XRD from the diffraction peak [111] of the cubic phase corresponding to cerium oxide, generally present at 2Φ between 28.0 and 30.0.

    METHOD FOR DIAGNOSING THE MALFUNCTIONING OF A DEVICE FOR ADDING AN ADDITIVE INTO A FUEL FOR A VEHICLE, AND SYSTEM FOR IMPLEMENTING SAID METHOD
    6.
    发明申请
    METHOD FOR DIAGNOSING THE MALFUNCTIONING OF A DEVICE FOR ADDING AN ADDITIVE INTO A FUEL FOR A VEHICLE, AND SYSTEM FOR IMPLEMENTING SAID METHOD 有权
    用于诊断用于将添加剂添加到燃料的装置的故障的方法以及用于实施所述方法的系统

    公开(公告)号:US20140366615A1

    公开(公告)日:2014-12-18

    申请号:US14370703

    申请日:2013-01-04

    Abstract: The invention relates to a method for diagnosing the malfunctioning of a device for adding an additive into a fuel for a vehicle comprising an internal combustion engine, said method including: a step of analyzing the fuel in order to determine a variation in the amount of additive in the fuel; a step of comparing the variation in the amount of additive, measured during the previous step, with a theoretical variation in said amount; a step of sending information when the difference between the measured variation and the theoretical variation exceeds a set value. The invention also relates to a system for adding an additive into fuel and for diagnosis for a vehicle comprising an internal combustion engine, which is intended for implementing said method.

    Abstract translation: 本发明涉及一种用于诊断用于将添加剂添加到用于包括内燃机的车辆的燃料中的装置的故障的方法,所述方法包括:分析燃料以确定添加剂的量的变化的步骤 在燃料中 将上一步骤中测量的添加剂量的变化与所述量的理论变化进行比较的步骤; 当测量的变化和理论变化之间的差超过设定值时发送信息的步骤。 本发明还涉及一种用于将添加剂添加到燃料中并用于包括用于实现所述方法的内燃机的车辆的诊断的系统。

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