Effect of Mg addition on acid-base characteristics in spinels structures

MONICA NUÑEZ MEIRELES; CADUS, LUIS EDUARDO; AGUERO FABIOLA

Congreso; The 2nd International Electronic Conference on Catalysis Sciences?A Celebration of Catalysts 10th Anniversary; 2021

Two spinels type catalysts families Ni1-xMgxAl2O4 (x = 0.01/0.05/0.1, NiMgx) and Mg1-xNixAl2O4 (x = 0.05/0.1/0.2, MgNix) were synthetized to generate Ni metal particles over a basic support. These catalysts were characterized by different techniques. Pure structures were obtained with a suitable surface area. NiMgx catalysts presented the highest surface area values. These catalysts also showed a higher reducibility and, therefore, the higher Ni0 content at the surface. The presence of basic strong sites was observed for MgNix while NiMgx only presented weak and medium basic sites, then NiMgx catalysts could be used in reactions where medium basic sites are needed