Selective oxidation of olefins with aqueous hydrogen peroxide over phosphomolybdic acid functionalized knitting aryl network polymer

•PMA/KAP was obtained by supporting phosphomolybdic acid on PPh3 functionalized KAP.•PMA/KAP is active and stable catalyst for olefin oxidation with H2O2/ethyl acetate.•Multi-weak interaction exits between PMA unit and PPh3 ligands knitted in the KAP.•Degradation of PMA to small species can be inhibited by the multi-weak interaction.