“…They range from zeolites [40,41], CeO 2 [42], C [43], ZrO 2 [44,45] or TiO 2 [46] and mixed oxides (such as Al 2 O 3 -CeO 2 [47] or WO 3 -CeO 2 [48]) to metals (Fe [49], Co [50], Cu [51], Zn [52], Nb [53], Ru [54], Pd [55,56], Sn [57], W [58], Ir [59,60], Pt [61,62], Au [63]) and sulphides (Mo [64][65][66][67], Ni [68], Co [69], Nb [70]) supported by oxides.…”