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发明公开
CN108786822A 一种甲烷重整多核壳空心型镍-镍硅酸盐-CeO2的制备方法 失效 - 权利终止

一种甲烷重整多核壳空心型镍-镍硅酸盐-CeO2的制备方法
摘要：
本发明公开一种甲烷重整多核壳空心型镍‑镍硅酸盐‑CeO2的制备方法，包括步骤（1）先制得二氧化硅纳米颗粒；（2）在二氧化硅纳米颗粒中加入镍前驱体，50oC～220oC条件下，制得镍硅酸盐空心球；（3）将镍硅酸盐空心球分散于乙醇和水的混合溶液中，加入CeO2的前驱体和沉淀剂，在温度40oC～150oC条件下反应，制得到镍硅酸盐‑CeO2核壳空心型纳米球；（4）将镍硅酸盐‑CeO2核壳空心型纳米球还原制得高度分散的镍‑镍硅酸盐‑CeO2多核壳空心型催化剂。本发明制备的多核壳空心型镍‑镍硅酸盐‑CeO2催化剂对镍和二氧化铈同时具有高的抗烧结性能，高氧空穴浓度，高抗积碳性能，高镍分散度，高CeO2分散度等优点，在低温甲烷干重整催化反应应用中表现出高的催化活性以及高的抗积碳性能。
摘要（英）：

The invention discloses a method for preparing multi-nuclear-shell hollow nickel-nickel silicate-CeO2 through methane reforming. The method includes the steps of (1) preparing silicon dioxide nanoparticles; (2) adding nickel precursors into the silicon dioxide nanoparticles, and preparing hollow nickel silicate spheres at the temperature of 50-220oC; (3) dispersing the hollow nickel silicate spheres into mixed liquor of ethyl alcohol and water, adding CeO2 precursors and precipitators, and performing reaction at the temperature of 40-150oC to obtain nickel silicate-CeO2 nuclear shell hollow nanospheres; (4) reducing the nickel silicate-CeO2 nuclear shell hollow nanospheres to obtain the high-dispersion nickel-nickel silicate-CeO2 multi-nuclear-shell hollow catalyst. The prepared multi-nuclear-shell hollow nickel-nickel silicate-CeO2 catalyst has the advantages of high sintering resistance on nickel and CeO2, hyperoxia hole concentration, high carbon deposition resistance, high nickel dispersity, high CeO2 dispersity and the like, and displays high catalytic activity and carbon deposition resistance when being applied to catalytic reaction based on low-temperature methane reforming.

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