Synthesis, characterization and activity pattern of carbon nanofibers based copper/zirconia catalysts for carbon dioxide hydrogenation to methanol: Influence of calcination temperature

被引：81

作者：

Din, Israf Ud ^{[1
]}

Shaharun, Maizatul S. ^{[1
]}

Subbarao, Duvvuri ^{[2
]}

Naeem, A. ^{[3
]}

机构：

[1] Univ Teknol PETRONAS, Dept Fundamental & Appl Sci, Tronoh, Malaysia

[2] Univ Teknol PETRONAS, Dept Chem Engn, Tronoh, Malaysia

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

来源：

JOURNAL OF POWER SOURCES | 2015年 / 274卷

关键词：

Methanol synthesis; Slurry reactor; Carbon nanofibers; Copper based catalysts; Carbon dioxide conversion; SUPPORTED PALLADIUM CATALYST; LIQUID-PHASE REACTIONS; CO2; HYDROGENATION; CU-ZNO/ZRO2; CATALYSTS; RUTHENIUM CATALYSTS; SELECTIVE CATALYST; SURFACE-PROPERTIES; PART I; ZIRCONIA; ADSORPTION;

D O I：

10.1016/j.jpowsour.2014.10.087

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of novel carbon nanofibers (CNFs) supported bimetallic copper/zirconia catalysts are synthesized by deposition precipitation method and calcined at different temperatures. Calcined catalysts are characterized by various techniques like X-ray diffraction, N-2 adsorption desorption, N2O chemisorption, high resolution transmission electron microscopy, temperature programmed reduction, X-ray photoelectron spectroscopy and temperature programmed desorption (CO2 & NH3). The structure activity correlation is discussed in details. The results demonstrate 450 degrees C as optimum calcination temperature for methanol synthesis rate with CO2/H-2 feed volume ratio of 1:3. CO2 conversion is found to be directly proportional to copper metallic surface area (S-Cu), while a linear relationship is observed between methanol synthesis rate and fraction of dispersed Cu. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：619 / 628

页数：10

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