Study On The Performance Of Supported Ag-Pd Catalyst For Dehydrogenation Of Formic Acid

Considering the current energy crisis, where the consumption of fossil fuels and consequent environmental pollution increase continuously, it is highly desirable to search for renewable, benign, and sustainable energy sources. Among a variety of alternative energy, hydrogen, generating only water as a byproduct, has been proposed as an environmentally attractive, clean, and efficient energy carrier for its extensive utilization in proton exchange membrane fuel cells. However, searching for efficient and safe hydrogen storage materials is one of the most critical challenges that hinders the development of hydrogen energy. Formic acid(FA, HCOOH) has attracted much attention due to its excellent stability, high energy density, and non-toxicity.Bimetallic AgPd nanoparticles were successfully immobilized on graphitic carbon nitride(g-C3N4) functionalized SBA-15 for the first time by a facile co-reduction method. These catalysts were applied in the decomposition of formic acid. The dehydrogenation of formic acid is dependent on the composition of AgPd and the content of carbon nitride(CN). Among all of the AgPd/mCND@SBA-15 catalysts tested, the Ag10Pd90/0.2CND@SBA-15 catalyst exhibits exceedingly superior performance for the decomposition of formic acid into high-quality hydrogen at 323 K with 100 % hydrogen selectivity and a turnover frequency of 893 h-1, which is among the maximum values obtained at 323 K in this paper.Bimetallic AgPd nanoparticles with various molar ratios were successfully immobilized on graphitic carbon nitride(g-C3N4) for the first time by a facile co-reduction method, to be used as catalysts for hydrogen release by dehydrogenation of formic acid(FA). The performance of these catalysts, as indicated by the turnover frequency(TOF), depended on the composition of the prepared catalysts. Among all the AgPd/g-C3N4 catalysts tested, Ag10Pd90/g-C3N4 exhibited exceedingly high activity for decomposing formic acid into high-quality H2 at 323 K, with 100 % selectivity and the maximum TOF of 480 h-1. The prepared catalyst is thus a potential candidate for triggering the widespread use of formic acid for H2 storage.