scholarly journals Design of PtZn nanoalloy catalysts for propane dehydrogenation through interface tailoring via atomic layer deposition

2021 ◽  
Author(s):  
Piyush Ingale ◽  
Kristian Knemeyer ◽  
Phil Preikschas ◽  
Mengyang Ye ◽  
Michael Geske ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Propane Dehydrogenation ◽  
Synthetic Approach ◽  
Highly Active ◽  
Layer Deposition

Synthetic approach for precise formation of PtZn bimetallic nano-alloys is reported, which are highly active and selective towards propane dehydrogenation.

scholarly journals Atomic Layer Deposition Overcoating Improves Catalyst Selectivity and Longevity in Propane Dehydrogenation

ACS Catalysis ◽  
2020 ◽  
Vol 10 (23) ◽  
pp. 13957-13967
Author(s):  
Zheng Lu ◽  
Ryon W. Tracy ◽  
M. Leigh Abrams ◽  
Natalie L. Nicholls ◽  
Paul T. Barger ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Propane Dehydrogenation ◽  
Catalyst Selectivity ◽  
Layer Deposition

scholarly journals “Intelligent” Pt Catalysts Based on Thin LaCoO3 Films Prepared by Atomic Layer Deposition

Inorganics ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 113 ◽  
Author(s):  
Xinyu Mao ◽  
Alexandre C. Foucher ◽  
Eric A. Stach ◽  
Raymond J. Gorte
Keyword(s):  
Atomic Layer Deposition ◽  
Co Adsorption ◽  
Atomic Layer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Highly Active ◽  
Transmission Electron ◽  
Layer Deposition ◽  
Scanning Transmission ◽  
Water Gas

LaCoO3 films were deposited onto MgAl2O4 powders by atomic layer deposition (ALD) and then used as catalyst supports for Pt. X-ray diffraction (XRD) showed that the 0.5 nm films exhibited a perovskite structure after redox cycling at 1073 K, and scanning transmission electron microscopy and elemental mapping via energy-dispersive X-ray spectroscopy (STEM/EDS) data demonstrated that the films covered the substrate uniformly. Catalysts prepared with 3 wt % Pt showed that the Pt remained well dispersed on the perovskite film, even after repeated oxidations and reductions at 1073 K. Despite the high Pt dispersion, CO adsorption at room temperature was negligible. Compared with conventional Pt on MgAl2O4, the reduced forms of the LaCoO3-containing catalyst were highly active for the CO oxidation and water gas shift (WGS) reactions, while the oxidized catalysts showed much lower activities. Surprisingly, the reduced catalysts were much less active than the oxidized catalysts for toluene hydrogen. Catalysts prepared from thin films of Co3O4 or La2O3 exhibited properties more similar to Pt/MgAl2O4. Possible reasons for how LaCoO3 affects properties are discussed.

Highly Active and Stable Fe/SiO2 Catalyst Synthesized by Atomic Layer Deposition for CO Oxidation

2020 ◽  
Vol 150 (11) ◽  
pp. 3296-3303 ◽  
Author(s):  
Xiaofeng Wang ◽  
Baitang Jin ◽  
Xiaoqing He ◽  
Tommi A. White ◽  
Xinhua Liang
Keyword(s):  
Atomic Layer Deposition ◽  
Co Oxidation ◽  
Atomic Layer ◽  
Highly Active ◽  
Layer Deposition

Highly dispersed Pt nanoparticles supported on carbon nanotubes produced by atomic layer deposition for hydrogen generation from hydrolysis of ammonia borane

2017 ◽  
Vol 7 (2) ◽  
pp. 322-329 ◽  
Author(s):  
Jiankang Zhang ◽  
Chaoqiu Chen ◽  
Shuai Chen ◽  
Qingmin Hu ◽  
Zhe Gao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Atomic Layer Deposition ◽  
Hydrogen Generation ◽  
Pt Nanoparticles ◽  
Atomic Layer ◽  
Ammonia Borane ◽  
Highly Active ◽  
Layer Deposition ◽  
Highly Dispersed ◽  
Hydrolysis Of

Highly active Pt nanoparticles deposited on CNTs were synthesized by atomic layer deposition used for hydrogen generation from AB hydrolysis.

scholarly journals Highly active dry methane reforming catalysts with boosted in situ grown Ni-Fe nanoparticles on perovskite via atomic layer deposition

2020 ◽  
Vol 6 (35) ◽  
pp. eabb1573 ◽  
Author(s):  
Sangwook Joo ◽  
Arim Seong ◽  
Ohhun Kwon ◽  
Kyeounghak Kim ◽  
Jong Hoon Lee ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Energy Utilization ◽  
Dry Reforming Of Methane ◽  
Alloy Formation ◽  
Methane Reforming ◽  
Highly Active ◽  
Layer Deposition ◽  
Sluggish Diffusion

With the need for more stable and active metal catalysts for dry reforming of methane, in situ grown nanoparticles using exsolution are a promising approach. However, in conventional exsolution, most nanoparticles remain underneath the surface because of the sluggish diffusion rate of cations. Here, we report the atomic layer deposition (ALD)–combined topotactic exsolution on La0.6Sr0.2Ti0.85Ni0.15O3-δ toward developing active and durable catalysts. The uniform and quantitatively controlled layer of Fe via ALD facilitates the topotactic exsolution, increasing finely dispersed nanoparticles. The introduction of Fe2O3 yields the formation of Ni-Fe alloy owing to the spontaneous alloy formation energy of −0.43 eV, leading to an enhancement of the catalytic activity for dry methane reforming with a prolonged stability of 410 hours. Overall, the abundant alloy nanocatalysts via ALD mark an important step forward in the evolution of exsolution and its application to the field of energy utilization.

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