Co-Mn-B Nanoparticles Supported on Epoxy-Based Polymer as Catalyst for Evolution of H-2 from Ammonia Borane Semi-Methanolysis


Çelik Kazıcı H. , İZGİ M. S. , ŞAHİN Ö.

JOURNAL OF ELECTRONIC MATERIALS, 2022 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2022
  • Doi Number: 10.1007/s11664-022-09491-0
  • Title of Journal : JOURNAL OF ELECTRONIC MATERIALS
  • Keywords: Hydrogen generation, ammonia borane, semi-methanolysis, multimetallic, HYDROGEN GENERATION, HYDROLYTIC DEHYDROGENATION, EFFICIENT CATALYSTS, SODIUM-BOROHYDRIDE, HYDRAZINE BORANE, RU, NANOCLUSTERS

Abstract

A high-density and low-cost hydrogen generation technology is required for hydrogen energy systems. Non-noble multimetallic Co-Mn-B nanoparticles can serve as a good catalyst because of their low cost and ability to produce hydrogen gas during the catalytic semi-methanolysis process. This work reports the synthesis, characterization, and the use of Co-Mn-B catalyst supported on Eupergit CM as a very active and reusable catalyst for the generation of hydrogen from the semi-methanolysis of ammonia borane (AB). Solid materials were characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive x-ray spectroscopy (EDX), and scanning electron microscopy (SEM). Rates of hydrogen generation were used to determine the kinetics of semi-methanolysis reaction. The parameters examined, namely the percentage of NaOH, percentage of metal loading, amount of catalyst particles, and AB concentrations and temperatures, were 1-5 (wt)%, 5-10 (wt)%, 5-50 mg, 0.5-3 mmol, and 30-60 degrees C, respectively. Total turnover frequency (TOF) value, hydrogen generation rate, and activation energy (Ea) were obtained at 30 degrees C as 15,751 h(-1), 17,324 mL g(cat)(-1)min(-1) (3 mmol AB and 25 mg Co-Mn-B/Eupergit CM), and 43.936 kJ mol(-1), respectively.