Efficient Hydrogen Production from Methanol Using a Single-Site Pt₁/CeO₂ Catalyst

Abstract

Hydrogen is regarded as an attractive alternative energy carrier due to its high gravimetric energy density and only water production upon combustion. However, due to its low volumetric energy density, there are still some challenges in practical hydrogen storage and transportation. In the past decade, using chemical bonds of liquid organic molecules as hydrogen carriers to generate hydrogen in situ provided a feasible method to potentially solve this problem. Research efforts on liquid organic hydrogen carriers (LOHCs) seek practical carrier systems and advanced catalytic materials that have the potential to reduce costs, increase reaction rate, and provide a more efficient catalytic hydrogen generation/storage process. In this work, we used methanol as a hydrogen carrier to release hydrogen in situ with the single-site Pt 1 /CeO 2 catalyst. Moreover, in this reaction, compared with traditional nanoparticle catalysts, the single site catalyst displays excellent hydrogen generation efficiency, 40 times higher than 2.5 nm Pt/CeO 2 sample, and 800 times higher compared to 7.0 nm Pt/CeO 2 sample. This in-depth study highlights the benefits of single-site catalysts and paves the way for further rational design of highly efficient catalysts for sustainable energy storage applications.

Enhanced and stabilized hydrogen production from methanol by ultrasmall Ni nanoclusters immobilized on defect-rich h-BN nanosheets

“…In contrast to the conventional storage and transportation approaches of compressed gas, or solid-state storage, liquid organic hydrogen carriers (LOHCs), such as methanol (6,7), have attracted significant attention. LOHCs are appealing due to their high gravimetric hydrogen content, relatively low cost, easy handling and transportation, as well as their ability to be manufactured from a variety of renewable sources (8)(9)(10). Based on this point, selective dehydrogenation of methanol by heterogeneous catalysts plays a vital role not only in fundamental research but also in practical industries.…”

Insights into the Mechanism of n-Hexane Reforming over a Single-Site Platinum Catalyst

“…N or O), has opened up a new research frontier in the catalysis field. [1][2][3][4] Many catalytic reactions have been explored, such as methane selectively oxidation to methanol and acetic acid using Rh SSCs, [5] CO oxidation and hydrogen generation from methanol using Pt SSCs, [6][7][8] etc. The reduction of particle size to single-atom level always achieves the maximum utilization of expensive noble metals, along with enhancement of activity, stability or selectivity.…”

“…[11][12] Hence, investigating the reaction mechanism of a large probe molecule on SSCs and designing a novel catalytic material are the goal of our studies to accelerate the development of next generation SSCs. [4][5][6][7][8][9] Catalytic reforming of linear hydrocarbons is one of the petroleum refining processes for upgrading light hydrocarbon feedstocks, [13] involving dehydrocyclization, isomerization, and dehydrogenation. [14][15][16] The hydrocarbon stream needs to be heated due to difficulty for C-H activation in reforming reactions.…”

Hydrogen Generation from Catalytic Reforming of Paraformaldehyde and Water by Polymeric Bifunctional Catalysts Comprising Ruthenium and Sulfonic Acid Units

“…Co., Ltd., > 98 %), methanol (CH 3 OH, Sinopharm Chemical Reagent, Co., Ltd., > 99. 7 were synthesized according to literature procedures. [24,34] Characterization and Physical Measurements 1 H NMR spectra were recorded on Varian Plus 400 MHz.…”

“…Growing attention is given to hydrogen generation from methanol, formic acid and formaldehyde because of their low costs, alternative sources and high gravimetric hydrogen contents. [1][2][3][4][5][6][7][8][9] The CO-free hydrogen from organic liquid decomposition has been used in proton exchange membrane fuel cell (PEMFC) successfully. [10][11][12][13][14] Researchers have put great efforts on organic liquid for hydrogen storage, but little attention has been paid to the solid organic polymers despite of their high hydrogen content.…”