“…Kanda et al [6,29] applied the incipient wetness impregnation method for the preparation of Ru 2 P, PtP 2 , Rh 2 P, and Pd 4.8 P on SiO 2 to test the metal phosphides as catalysts in the HDS of thiophen. On later publications, Kanda et al [30] focused on the preparation of Rh 2 P on different support materials (SiO 2 , TiO 2 , Al 2 O 3 , MgO, and ZrO 2 ) and the effect of the reduction temperature and the effect of phosphorus loading [31] on the formation of Rh 2 P. The compound Rh 2 P can be successfully prepared on all the support materials investigated. Further, Kanda observed the formation of Rh 2 P on SiO 2 at lower reduction temperatures (350 • C) with a high excess of phosphorus (P:Rh = 2), while higher temperatures are required (550 • C) to form phase-pure Rh 2 P on SiO 2 samples with a lower excess of phosphorus (P:Rh = 1).…”