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Statements

Subject Item
n2:RIV%2F67985807%3A_____%2F11%3A00370090%21RIV12-AV0-67985807
rdf:type
n11:Vysledek skos:Concept
dcterms:description
A database consisting of 1870 data sets on catalyst compositions and their performances in the oxidative coupling of methane was compiled. For this goal, about 1000 full-text references from the last 30 years have been analyzed and about 420 of them, which contained all the necessary information, were selected for the data extraction. The accumulated data were subject to statistical analysis: analysis of variance, correlation analysis, and decision tree. On the basis of the results, 18 catalytic key elements were selected from originally 68 elements. All oxides of the selected elements, which positively affect the selectivity to C2 products, show strong basicity. Analysis of binary and ternary interactions between the selected key elements shows that high-performance catalysts are mainly based on Mg and La oxides. Alkali (Cs, Na) and alkaline-earth (Sr, Ba) metals used as dopants increase the selectivity of the host oxides, whereas dopants such as Mn, W, and the Cl anion have positive effects on the catalyst activity. The maximal C2 selectivities for the proposed catalyst compositions range from 72 to 82%, and the respective C2 yields range from 16 to 26%. A database consisting of 1870 data sets on catalyst compositions and their performances in the oxidative coupling of methane was compiled. For this goal, about 1000 full-text references from the last 30 years have been analyzed and about 420 of them, which contained all the necessary information, were selected for the data extraction. The accumulated data were subject to statistical analysis: analysis of variance, correlation analysis, and decision tree. On the basis of the results, 18 catalytic key elements were selected from originally 68 elements. All oxides of the selected elements, which positively affect the selectivity to C2 products, show strong basicity. Analysis of binary and ternary interactions between the selected key elements shows that high-performance catalysts are mainly based on Mg and La oxides. Alkali (Cs, Na) and alkaline-earth (Sr, Ba) metals used as dopants increase the selectivity of the host oxides, whereas dopants such as Mn, W, and the Cl anion have positive effects on the catalyst activity. The maximal C2 selectivities for the proposed catalyst compositions range from 72 to 82%, and the respective C2 yields range from 16 to 26%.
dcterms:title
Statistical Analysis of Past Catalytic Data on Oxidative Methane Coupling for New Insights into the Composition of High-Performance Catalysts Statistical Analysis of Past Catalytic Data on Oxidative Methane Coupling for New Insights into the Composition of High-Performance Catalysts
skos:prefLabel
Statistical Analysis of Past Catalytic Data on Oxidative Methane Coupling for New Insights into the Composition of High-Performance Catalysts Statistical Analysis of Past Catalytic Data on Oxidative Methane Coupling for New Insights into the Composition of High-Performance Catalysts
skos:notation
RIV/67985807:_____/11:00370090!RIV12-AV0-67985807
n11:predkladatel
n12:ico%3A67985807
n3:aktivita
n5:Z
n3:aktivity
Z(AV0Z10300504)
n3:cisloPeriodika
12
n3:dodaniDat
n9:2012
n3:domaciTvurceVysledku
n4:6036627
n3:druhVysledku
n16:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
232194
n3:idVysledku
RIV/67985807:_____/11:00370090
n3:jazykVysledku
n15:eng
n3:klicovaSlova
catalyst development; heterogeneous catalysis; methane; oxidative coupling; catalyst composition; statistical analysis
n3:klicoveSlovo
n7:heterogeneous%20catalysis n7:oxidative%20coupling n7:statistical%20analysis n7:catalyst%20composition n7:catalyst%20development n7:methane
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[60F6569D9B24]
n3:nazevZdroje
ChemCatChem
n3:obor
n17:IN
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n9:2011
n3:svazekPeriodika
3
n3:tvurceVysledku
Holeňa, Martin Schlögl, R. Baerns, M. Zavyalova, U.
n3:wos
000297791400016
n3:zamer
n10:AV0Z10300504
s:issn
1867-3880
s:numberOfPages
13
n18:doi
10.1002/cctc.201100186