Synthesis and characterization of cyclomatrix polyphosphazenes framework nanospheres-supported Cu0 nanocatalyst and its use in hydrogen production from ethylenediamine bisborane

Abstract

In this study, Cp-BAP3@Cu catalyst system containing Cu0 nanoparticles with an average size of 4.23 ± 1.97 nm was prepared by using Cp-BAP nanospheres containing cyclotriphosphazene with an average size of 306.31 ± 61.54 nm as support material. Characterizations of the synthesized polymeric materials and catalyst system were carried out by various analysis techniques. The Cp-BAP3@Cu catalyst system was used for the catalytic hydrolysis reaction of ethylenediamine bisborane (EDAB). For the hydrolysis reaction of EDAB, Cp-BAP3@Cu had a turnover frequency of 1539 mol H2/mol Cu0. h at 30 °C. The activation parameters for the hydrolysis reaction were Ea = 47.36 ± 0.52 kJ/mol, ΔH0 = 44.73 ± 0.52 kJ/mol and ΔS0 = −153.81 ± 6.14 J/mol.K. The Cp-BAP3@Cu catalyst system has an important catalytic activity in the formation of H2 from the hydrolysis of EDAB.