Catalytic dehydrogenation of formic acidtriethanolamine mixture using copper nanoparticles
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Elsevier
Abstract
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In a bid to compliment the lost reversed fron fossils
recent advances in research are
tailored towards producing hydrogen as an alternative source of fuel which is aimed at
fostering a globally sustainable and reliable energy-economy. In this work, hydrogen was
produced from formic acid (FA) using a new technology that involves the use of copper
nanoparticles (CuNPs) supported on triethanolamine. The CuNP-catalysts of variant concentrations
(i.e. 0.6e1.2 M) were synthesized using the conventional chemical deposition
method. Also, a novel approach that bothers on the application of the Differential Method
of Analysis (DMA) was used in determining the kinetic parameters for the FAdehydrogenation.
Based on the results, the volume of H2 produced varied with time, pH,
concentration and catalyst-size. At 6 h, the 1 M CuNPs gave the highest volume (815 mL) of
hydrogen with corresponding pH, particle size and approximate conversion of 3.19, 1.5 nm
and 100% respectively, whereas, over extended periods i.e. over 6 h, the approximate
volume-conversions of FA increased insignificantly for all catalysts. According to the
investigation, the optimum CuNP-catalyst concentration required to produce 815 mL H2 in
6 h is 1 M. The decomposition was a first-order-type with a rate constant (k-value) of 1.0041
s�1.
Keywords
TP Chemical technology