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@ARTICLE{Egger:641781,
author = {Egger, Felix and Mölkner, Andreas and Steffen, Julien and
Taccardi, Nicola and Raman, Narayanan and Zobel, Mirijam and
Görling, Andreas and Wasserscheid, Peter and Haumann,
Marco},
title = {{S}upported {C}atalytically {A}ctive {L}iquid {M}etal
{S}olutions ({SCALMS}) for {P}ropane
{D}ehydrogenation–{I}ntermetallic {P}hases and {L}iquid
{A}lloys {S}tudied by {P}air {D}istribution {F}unction
{A}nalysis and {D}ensity {F}unctional {T}heory},
journal = {Advanced science},
volume = {12},
issn = {2198-3844},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2025-05191},
pages = {e11498},
year = {2025},
abstract = {The supported catalytically active liquid metal solution
(SCALMS) concept is based on catalytically active metals
dissolved in a low-melting-point liquid metal matrix. These
solid alloy particles, deposited over a high area support,
transform into a liquid alloy under reaction conditions. In
this work, GaPt SCALMS materials of varying composition are
investigated and focus on the change in the alloy
composition during preheating, the actual high temperature
propane dehydrogenation at 823 K, and after cool-down. X-ray
diffraction (XRD) is used and analyze the pair distribution
function (PDF) combined with density functional theory (DFT)
studies. Before catalysis, the Ga phase oxidizes to an
amorphous β-Ga2O3 phase which is likely removed during
activation. Refinements for all sample data before catalysis
confirm the presence of fcc-Pt nanoparticles. After
catalysis, the Pt nanoparticles convert to a GaPt2 alloy
phase with high structural disorder, visible in the
difference pair distribution function (dPDF). The
machine-learned force fields (ML-FF) simulations suggest
that GaPt2 forms at the Pt(111) interface with liquid Ga
through gradual Ga intercalation into the Pt crystal
structure. Simulations further indicate that both fcc-Pt and
GaPt2 are stable at temperatures up to 800 K if the Pt
content of the surrounding liquid is high enough.},
cin = {DOOR ; HAS-User},
ddc = {624},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / SFB 1452 MGK -
Integriertes Graduiertenkolleg CLINTiRTG „Wissenschaft und
Technologie der Katalyse“ (MGK) (457054490) / DFG project
G:(GEPRIS)390919832 - EXC 2186: Das Fuel Science Center –
Adaptive Umwandlungssysteme für erneuerbare Energie- und
Kohlenstoffquellen (390919832)},
pid = {G:(DE-HGF)POF4-6G3 / G:(GEPRIS)457054490 /
G:(GEPRIS)390919832},
experiment = {EXP:(DE-H253)P-P02.1-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1002/advs.202511498},
url = {https://bib-pubdb1.desy.de/record/641781},
}