Abstract
Cu/ZnO/Al2O3-based catalysts for methanol synthesis are prepared through co-precipitation by addition of Mg and Cr. Precursors are characterized by XRD and Air-TGA. Catalysts, calcined at 450 °C, are examined by XRD and BET. Reduction characteristics of the catalysts are analyzed via H2-TPR and H2-TGA. Surface acidity of the catalysts is determined by TPAD-TGA. Addition of Mg and Cr causes formation of smaller CuO crystallite size, and increases surface area of catalysts by improving dispersion of CuO. Cr also improves stability of the catalysts against ambient conditions and prolongs their shelf life. The catalyst containing 6.4 mol % Cr has a methanol selectivity of 83.5% and a catalytic activity of 14.2 g methanol production which is the highest among other synthesized catalysts. High Cr loadings (32 mol %) reduce the catalytic activity. Cr containing catalysts continue to produce the highest amounts of methanol as compared with the catalysts without Cr where Cr prevents deactivation and sintering.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
