2 documents found, page 1 of 1
Bromate reduction in water promoted by metal catalysts prepared over faujasite ...
Olívia S. G. P. Soares; Cátia M. A. S. Freitas; António M. Fonseca; José J. M. Órfão; Manuel F. R. Pereira; Isabel C. NevesBromate reduction in water has been investigated by using mono and bimetallic catalysts prepared over a faujasite zeolite in a semi-batch reactor under hydrogen at room temperature and atmospheric pressure. The structural synthetic analogue Y of the faujasite zeolite in the sodium form, with different particle sizes (NaY, 700 nm and nanoNaY, 150 nm), was chosen for the preparation of metal catalysts. Ion exchan...
Mono and bimetallic NaY catalysts with high performance in nitrate reduction in...
Olívia S. G. P. Soares; Luísa Marques; Cátia M. A. S. Freitas; António M. Fonseca; Pier Parpot; José J. M. Orfão; Manuel F. R. Pereira; Isabel C. NevesThe catalytic reduction of nitrate in water was performed with mono and bimetallic catalysts based on NaY zeolite. Four catalysts, two monometallic (Cu-Y and Pd-Y) and two bimetallic (CuPd-Y and PdCu-Y) were prepared by the ion-exchange method using the faujasite zeolite in the sodium form (NaY, 700 nm). The contents of promoter and noble metals were kept in the range of 0.60-0.84 wt% for copper and 0.92-1.80 w...