Synthesis, characterization and activity of CeO2 supported Cu-Mg bimetallic catalysts for CO2 to methanol

被引：11

作者：

Din, Israf Ud ^{[1
]}

Alotaibi, Mshari A. ^{[1
]}

Alharthi, Abdulrahman I. ^{[1
]}

Naeem, A. ^{[2
]}

Centi, Gabriele ^{[3
]}

机构：

[1] Prince Sattam Bin Abdulaziz Univ, Coll Sci & Humanities, Dept Chem, Al Kharj 16278, Saudi Arabia

[2] Univ Peshawar, Natl Ctr Excellence Phys Chem, Peshawar, Pakistan

[3] Univ Messina, Dipartimento Chim Ind & Ingn Mat, Sal Sperone 31, I-98166 Messina, Italy

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2023年 / 192卷

关键词：

Cerium oxide; Bimetallic catalysts; XPS investigations; Methanol synthesis rate; CO; 2; conversion; HYDROGENATION;

D O I：

10.1016/j.cherd.2023.02.030

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Cerium oxide was synthesized by thermal method using cerium carbonate hydrate and utilized as a catalysts support. Precipitation method was employed to deposit copper and magnesium oxides on the surface of cerium oxide. The synthesized Cu-Mg/CeO2 catalysts were characterized by different analytical techniques. FTIR studies confirmed the in -corporation of copper and magnesium oxides on cerium oxide surface. Field Emission Scanning Electron Microscope (FESEM) revealed uniform distribution of both metal oxides on cerium oxide support. Nitrogen adsorption-desorption studies recorded surface profile of CeO2 loaded Cu-Mg bimetallic catalysts. The X-ray photoelectron spectroscopy (XPS) revealed existence of Cu and Mg metals in the form of Cu2+ and Mg2+ on CeO2 surface. Furthermore, the role of Ce was apprehended by XPS investigations in terms of methanol synthesis rate. Activities studied of the synthesized catalysts revealed the promoting role of Cu-Mg composition with highest activity of 71 g.meth/kg.cat.h was recorded for 4Cu-6Mg/ CeO2 catalysts. The efficiency of CeO2 based Cu-Mg bimetallic catalysts was established by the comparative data from the literature in terms of methanol synthesis rate.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

引用

页码：158 / 166

页数：9

共 31 条

[1] Low temperature green methanol synthesis by CO2 hydrogenation over Pd/SiO2 catalysts in slurry reactor [J].