Abstract:
:Due to the surge of natural gas production, feedstocks for chemicals shift towards lighter hydrocarbons, particularly methane. The success of a Gas-to-Chemicals process via synthesis gas (CO and H2) depends on the ability of catalysts to suppress methane and carbon dioxide formation. We designed a Co/Mn/Na/S catalyst, which gives rise to negligible Water-Gas-Shift activity and a hydrocarbon product spectrum deviating from the Anderson-Schulz-Flory distribution. At 240 °C and 1 bar, it shows a C2-C4 olefins selectivity of 54%. At 10 bar, it displays 30% and 59% selectivities towards lower olefins and fuels, respectively. The spent catalyst consists of 10 nm Co nanoparticles with hcp Co metal phase. We propose a synergistic effect of Na plus S, which act as electronic promoters on the Co surface, thus improving selectivities towards lower olefins and fuels while largely reducing methane and carbon dioxide formation.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Xie J,Paalanen PP,van Deelen TW,Weckhuysen BM,Louwerse MJ,de Jong KPdoi
10.1038/s41467-018-08019-7subject
Has Abstractpub_date
2019-01-11 00:00:00pages
167issue
1issn
2041-1723pii
10.1038/s41467-018-08019-7journal_volume
10pub_type
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