摘要:
Copper(II) complexes derived from a benzimidazolyl schiff base ligand are used heterogeneously for the selective oxidation of p-chlorobenzyl alcohol to p-chlorobenzaldehyde. Complex (1) shows rectangular box type morphology while complex (2) shows a flower like morphology with micropetals. Powder X-ray diffraction pattern upon reuse of catalyst (1) shows loss of peaks associated with planes 001 and 100 suggesting preferential exposure of these planes during the catalytic cycle, while the catalyst (2) shows loss in activity with planes associated with 011 and 021 (axis b & c) implying a non-preferential activity. It is interesting to note that the box type morphology (1) sustains catalysis upon recycling to a greater extent in comparison to the flower type (2). (C) 2016 Elsevier B.V. All rights reserved.