Authors:M. Jose John, K. Muraleedharan, V. M. Abdul Mujeeb, M. P. Kannan, and T. Ganga Devi
decomposition of solids [ 1 , 3 – 5 ]. For many oxalates, the mechanism of thermaldecomposition are well established and are commonly used as standard substances to confirm the exactness of theoretically developed models and equations of thermaldecomposition
Authors:Abolfazl Shiroudi, Ehsan Zahedi, and Reza Zabihi
The kinetics of thermaldecomposition of several compounds of the general type have been previously studied using experimental techniques 1 – 4 ]. It has been shown that elimination of molecular hydrogen occurs
Authors:C. Munteanu, M. Caldararu, D. Gingasu, M. Feder, L. Diamandescu, and N. I. Ionescu
-milling [ 9 ] or solid state reaction [ 6 ] and non-conventional ones like sol–gel [ 10 ], co-precipitation, auto-combustion [ 11 , 12 ] and thermaldecomposition of polynuclear coordination compounds [ 13 ].
In this paper, we present a study on
The copper/zinc/zirconia/gallium catalyst used in these experiments was prepared in our laboratory using the thermaldecomposition of citrates. Decomposing the citrate complexes of metals was performed according to the method described by
Authors:Hailiang Yin, Tongna Zhou, Yunqi Liu, Yongming Chai, and Chenguang Liu
alkyl; Me: Co or Ni; Me′: Mo or W] followed by thermaldecomposition. However, for unsupported HDS catalysts, the morphologies and catalytic performances depend strongly on the experimental conditions [ 6 ].
The activation of Ni
Authors:A. Mukherjee, S. Mishra, and N. Krishnamurthy
decomposition of the intermediates have not been reported in the open literature. In the present study, the kinetics of the thermaldecomposition of ammonium yttrium fluoride intermediates, (NH 4 ) 3 Y 2 F 9 and NH 4 Y 2 F 7 were studied by non
Authors:Viorel Chihaia, Karl Sohlberg, M. Scurtu, S. Mihaiu, M. Caldararu, and M. Zaharescu
after catalytic test.
Sn–Ce–O powders with the same nominal compositions (Sn 0.5 Ce 0.5 O 2 and Sn 0.2 Ce 0.8 O 2 ) were obtained by the thermaldecomposition of tin(II) oxalate and cerium(IV) ammonium nitrate
catalysts was monitored by the percentage weight loss in relation to the temperature from the range of 0–1,000 °C. The weight losses that were observed at temperatures below 600 °C can be attributed to the thermaldecomposition of water, citrate precursor
Authors:Hui Wang, Mouhua Wang, Wenbo Zhao, Wei Wei, and Yuhan Sun
The reaction of urea with ZnO was investigated by FTIR and TPD. It was found that urea was thermally decomposed into isocyanic
acid on ZnO, and the adsorbed isocyanic acid reacted with ZnO to form zinc isocyanate. Catalytic evaluation showed that ZnO
had high activity towards urea methanolysis in a batch reactor, and zinc element and isocyanate were all detected in the product
solution. Furthermore, the soluble zinc content was proportional to the DMC yield. Sample analyses suggested that the soluble
zinc existed in the form of Zn(NCO)2(NH3)2, which originated from the reaction of ZnO with urea. It was the complex (not ZnO) that catalyzed the urea methanolysis.
Based on these observations, a possible mechanism was suggested.