mətˈɪɹiəlz kˈɔːld pɐlˈeɪdiəm ˈɑːksaɪd ɑːɹ jˈuːsfəl kˈæɾɐlˌɪsts fɔːɹ kˌæɾɐlˈɪɾɪk haɪdɹˈɑːdʒənˈeɪʃən ɪn ɔːɹɡˈænɪk sˈɪnθəsˌɪs.
Materials called palladium oxide are useful catalysts for catalytic hydrogenation in organic synthesis.