Investigation of the recyclability of the Pd@CBFS-2 catalyst showed excellent results in a total of four cycles (Figure 3d), i.e., high selectivity (>99%) and conversion (>82%). The fifth cycle still gave high selectivity (>99%) but a drop in conversion (51%). No detectable acid was found in the product, indicating that the alcohol was selectively converted to aldehyde. These properties were superior to those observed for the reported Pd/C catalysts19 (see Table S1).