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AssigneesChina Petroleum & Chemical Corporation, Sinopec Beijing Research Institute of Chemical Industry
InventorsJiehua WU, Wei XUE, Yi MAN, Yingjie FENG, Dongbing LIU, Mingsen ZHANG
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A lanthanum dioxide carbonate catalyst, a preparation method and a use thereof are provided. The lanthanum dioxide carbonate catalyst comprises hexagonal crystalline lanthanum dioxide carbonate and hexagonal crystalline lanthanum dioxide carbonate containing a doping element R. The method includes the steps of (1) adding an alkali solution to a solution of lanthanum source, and then performing a solid-liquid separation and a drying to obtain lanthanum hydroxide; (2) contacting a solution of a compound containing the doping element R with lanthanum hydroxide, and then performing a drying; (3) calcining the dried product of step (2) under a carbon-containing atmosphere to obtain a lanthanum dioxide carbonate catalyst.
A lanthanum dioxide carbonate catalyst, characterized in that the catalyst comprises hexagonal crystalline lanthanum dioxide carbonate and hexagonal crystalline lanthanum dioxide carbonate containing a doping element R, and the total content of hexagonal crystalline lanthanum dioxide carbonate and hexagonal crystalline lanthanum dioxide carbonate containing a doping element R in the catalyst is not less than 98 wt %, wherein the molar ratio of the lanthanum element to the doping element R is 1:0.01 to 1:0.3;
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