Abstract
Production of hydrogen by catalytically hydrolyzing ammonia borane (AB) has attracted extensive attention in the field of catalysis and energy. However, it is still a challenge to develop a both inexpensive and active catalyst for AB hydrolysis. In this work, we designed a series of MoO3-doped MnCo2O4 (x) catalysts, which were fabricated by a hydrothermal process. The morphology, crystalline structure, and chemical components of the catalysts were systematically analyzed. The catalytic behavior of the catalyst in AB hydrolysis was investigated. Among these catalysts, MoO3-doped MnCo2O4 (0.10) microspheres composed of nanosheets exhibited the highest catalytic activity. The apparent activation energy is 34.24 kJ mol−1 and the corresponding turnover frequency is 26.4 molhydrogen min−1 molcat−1. Taking into consideration the low cost and high performance, the MoO3-doped MnCo2O4 (0.10) microspheres composed of nanosheets represent a promising catalyst to hydrolyze AB for hydrogen production.
Highlights
With the rapid consumption of fossil fuels worldwide, environmental pollution is increasing, and the energy crisis is worsening
Taking into consideration the low cost and high performance, the MoO3 -doped MnCo2 O4 (0.10) microspheres composed of nanosheets represent a promising catalyst to hydrolyze ammonia borane (AB) for hydrogen production
In 2006, Xu et al demonstrated for the first time that noble metals such as Pt, Rh and Pd exhibit high catalytic activity towards AB hydrolysis at room temperature [10]
Summary
With the rapid consumption of fossil fuels worldwide, environmental pollution is increasing, and the energy crisis is worsening. As a clean and sustainable energy carrier, has attracted widespread attention worldwide It is considered part of a new generation of promising fuels due to its high energy density, zero emission, and easy availability [1,2]. In 2006, Xu et al demonstrated for the first time that noble metals such as Pt, Rh and Pd exhibit high catalytic activity towards AB hydrolysis at room temperature [10]. Zhang et al reported Ni nanoparticles supported on multi-walled carbon nanotubes by atomic layer deposition [20], which can catalyze AB hydrolysis Their catalytic activity is significantly lower than that of precious metal catalysts.
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