Abstract: Using XRD, NMR, SEM with mapping the structure of porous CuAlO/CuAl ceramometall was studied. The CuAlO/CuAl ceramometall is obtained by mechanical alloying Cu-Al mixtures (Cu:Al = 87:13 wt.%) with following hydrothermal treatment and calcination under the air. The microstructure of initial cermets has an egg-shell character with aluminum and copper metallic phases and X-ray amorphous mixed oxides in cores randomly distributed in the oxide matrix. It has been found, that the activity of massive oxide AlCuZn catalyst is higher, because the surface area of ceramometalls is lower. It has been shown, that the activity of the specific metallic copper surface of ceramometalls in WGS reaction is changed nonmonotonically and symbatically content crystallized intermetallic compound Al4Cu9. Mechanical, textural and thermal properties of ceramometals was estimated. It has been found that the ceramometalls has macropores size to tens of microns. These pores promote to high activity of coarse fraction pelleted catalysts in WGS reaction because high diffusion permeability. For this reason the activity of caremometalls is comparable to that of a granular oxide catalyst based on mixed oxides of copper, zinc and aluminum. Mild leaching leads to a significant increase in activity cermets granules. This work was supported in part by RFBR grant #14-08-00251 and FP7 Project BIOGO.

Cite: Valeev K.R. , Tikhov S.F. , Minyukova T.P. , Cherepanova S.V. , Salanov A.N. , Kaichev V.V. , Saraev A.A. , Andreev A.S. , Lapina O.B. , Sadykov V.A.
Egg-Shell Cu-Al Ceramometal Catalyst for Water-Gas Shift Reaction
IV International Scientific School-Conference for Young Scientists in Memory of Professor L.N. Kurina «Catalysis: from Science to Industry» 23-27 Oct 2016