Abstract
Hydrogen (H2) generation from natural biological metabolic products has remained a huge challenge for the energy arena. However, designing a catalytic system with complementary properties including high surface area, high loading, and easy separation offers a promising route for efficient utilization of nanoreactors for prospective H2 suppliers to a fuel cell. Herein, selective dehydrogenation of formic acid (FA) as a natural biological metabolic product to H2 and CO2 gas mixtures has been studied by supporting ultrafine palladium nanoparticles on organosulfur-functionalized SBA-15 nanoreactor under ultrasonic irradiation. The effects of the porous structure as a nanoreactor, and organosulfur groups, which presented around the Pd due to their prominent roles in anchoring and stabilizing of Pd NPs, studied as a superior catalyst for selective dehydrogenation of FA. Whole catalytic systems were utilized in ultrasonic irradiation in the absence of additives to provide excellent TOF/TON values. It was found that propose catalyst is a greener, recyclable, and more suitable option for the large-scale application and provide some new insights into stabilization of ultra-fine metal nanoparticle for a variety of applications.
Highlights
It is clear that fossil fuel reserves are limited and some environmental problems such as ozone depletion, acid rain, and some other issues in this case that is arising from the presence of C O2, NOx, and SOx in the publication gases, ensue because of consuming coal, natural gas and p etroleum[1,2]
Despite the homogeneous catalysts based on Ir, Ru, and Fe organometallic complex usually have great catalytic activity and selectivity, while gold25, Platinum26, and palladium4 well known heterogeneous catalysts used in the decomposition of formic acid (FA)
Some reports have shown that nanostructure with base Pd such as A u0.5Pd0.5/NH2-N-rGO27, Pd-MIL-12528, Pd1Au1/30-LA29, AP-SiO2@PDA-NGO@Pd30, PdAu-MnOx/N-SiO231, CrAuPd/N-SiO232, IrPdAu/NH2-SBA-1533, Ag0.2Au0.4Pd0.4/rGO34, Au@Pd/UiO-66(ZrxTiy)35, Au–Pd/MIL-10136, and PdCoNi/TiO237, can efficiently decomposed FA under neat condition
Summary
It is clear that fossil fuel reserves are limited and some environmental problems such as ozone depletion, acid rain, and some other issues in this case that is arising from the presence of C O2, NOx, and SOx in the publication gases, ensue because of consuming coal, natural gas and p etroleum[1,2]. Most of these problems can be crossed by using clean and renewable energy sources. Despite the unique ultrasonic technology and their effect in catalytic systems for energy arena such as selective dehydrogenation has been unexplored to date. The results compared with obtained information from the automatic sensor of H2 and CO2 gases
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