Open AccessEffect of Basicity on Cu Based Catalyst for CO2 Hydrogenation
Author(s) -
Hussanai Sukkathanyawat,
K. Wichianwat,
Sabaithip Tungkamani,
Asawin Bampenrat
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/586/1/012003
Subject(s) - catalysis , molar ratio , selectivity , chemistry , copper , methane , adsorption , inorganic chemistry , reaction conditions , water gas shift reaction , nuclear chemistry , organic chemistry
The purpose of this research is to study the effect of the MgO loading (0.25, 0.5, 1 and 2 Molar) on the Cu/AC catalysts for CO 2 hydrogenation. The optimum condition of reaction temperature and ratio of H 2 :CO 2 for CO 2 hydrogenation were also investigated. Copper based catalysts were characterized by BET, CO 2 -TPD, H 2 -TPR and CO 2 -TPSR. The catalytic performance of catalysts were carried out in the fixed bed reactor at a reaction temperature of 250 °C pressure of 1 atm with mixture gas of 2:1 molar ratio of H 2 :CO 2 . The result shows that MgO increases the surface basicity of catalyst which enhances the bond strength between CO adsorbed on Cu loading to inhibition the reverse water-gas shift reaction, which can well promote the methane selectivity. The optimum conditions for CO 2 hydrogenation is temperature of reaction at 300 °C and ratio of H 2 :CO 2 as 2:1.