World Scientific
Skip main navigation

Cookies Notification

We use cookies on this site to enhance your user experience. By continuing to browse the site, you consent to the use of our cookies. Learn More
×

System Upgrade on Tue, May 28th, 2024 at 2am (EDT)

Existing users will be able to log into the site and access content. However, E-commerce and registration of new users may not be available for up to 12 hours.
For online purchase, please visit us again. Contact us at customercare@wspc.com for any enquiries.

EFFECTS OF CALCINATIONS TEMPERATURE ON THE STRUCTURE OF CuO-ZrO2 NANOPARTICLES

    https://doi.org/10.1142/S0217979208048115Cited by:3 (Source: Crossref)

    Nano sized copper oxide-zirconia particles were prepared by using a sol-gel technique. The phase change with the calcinations temperature was also investigated for the sample containing 30 wt% copper. It was found that the calcinations temperature strongly influenced the interaction between the active species and support and hence the structure and catalytic performance. Low calcinations temperature yielded poorly crystallized catalysts and favored the formation of a Cu(OH)2 and Zr(OH)4 like structure. The results show that cubic ZrO2 and copper oxide were present below calcinations at 400°C, and cubic ZrO2 with some amount of monoclinic ZrO2 and tetragonal ZrO2, as well as copper oxide, formed after calcinations at 500°C. However, below heating at 500°C, amorphous compounds were obtained; suggesting that 500°C could be a phase transition point. The incorporation of copper in the ZrO2 lattice resulted in a loss of order in the ZrO2 structure when calcined at 500°C, with a further increase in the calcinations temperature leading to the phase change. In this work, the latest results on nano crystalline CuO-ZrO2 as the catalyst for hydrogen synthesis from methanol is reported. The effect of calcinations temperature on the nanoparticle structure of catalyst is focused.

    You currently do not have access to the full text article.

    Recommend the journal to your library today!