摘要：A series of Ce modified CuLDH-Cex catalysts were synthesized by adding different amounts of Ce to CuMgAl hydrotalcite (CuLDH) catalysts. The physicochemical properties of the catalysts were characterized by X-ray diffraction (XRD), N2 adsorption-desorption (BET), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), etc. The results showed that the addition of Ce changed the hydrotalcite structure of CuLDH catalyst, and an appropriate amount of Ce increased the surface area of the catalyst and improved the dispersion of Cu particles. At the same time, an appropriate amount of Ce was beneficial for increasing the density of strong alkaline sites and the number of oxygen vacancies on the catalyst surface, promoting the adsorption and conversion of CO2. Ce was beneficial for adjusting the Cu+/Cu0 ratio on the catalyst surface, and a higher Cu+/Cu0 ratio was conducive to the formation of methanol. When the Ce/Cu ratio was 0.3, the catalyst exhibited higher activity with 7.5% CO2 conversion, 78.4% methanol selectivity and 362.8 g/(kg路h) spatiotemporal yield at 240 鈩? under 2.5 MPa with a GHSV=9000 mL/(g路h). It was proved by in-situ DRIFTS that CuLDH-Ce0.3 catalyst followed HCOO* reaction path during CO2 hydrogenation for methanol. 漏 2024 Science Press. All rights reserved.

ISSN号：2097-213X

卷、期、页：卷52期2：159-170

发表日期：2024-02-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology

参与作者：姜鹏

通讯作者：刘昊然,于志庆,黄文斌

第一作者：魏强,周亚松

论文类型：期刊论文

论文概要：刘昊然,于志庆,黄文斌,魏强,姜鹏,周亚松，Effect of Ce modification on the performance of CuLDH catalyst for CO2 hydrogenation to methanol，Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology，2024，卷52期2：159-170

论文题目：Effect of Ce modification on the performance of CuLDH catalyst for CO2 hydrogenation to methanol