Single-pass transformation of syngas into ethanol with high selectivity by triple tandem catalysis.

Abstract:

:Synthesis of ethanol from non-petroleum carbon resources via syngas (a mixture of H2 and CO) is an important but challenging research target. The current conversion of syngas to ethanol suffers from low selectivity or multiple processes with high energy consumption. Here, we report a high-selective conversion of syngas into ethanol by a triple tandem catalysis. An efficient trifunctional tandem system composed of potassium-modified ZnO-ZrO2, modified zeolite mordenite and Pt-Sn/SiC working compatibly in syngas stream in one reactor can afford ethanol with a selectivity of 90%. We demonstrate that the K+-ZnO-ZrO2 catalyses syngas conversion to methanol and the mordenite with eight-membered ring channels functions for methanol carbonylation to acetic acid, which is then hydrogenated to ethanol over the Pt-Sn/SiC catalyst. The present work offers an effective methodology leading to high selective conversion by decoupling a single-catalyst-based complicated and uncontrollable reaction into well-controlled multi-steps in tandem in one reactor.

journal_name

Nat Commun

journal_title

Nature communications

authors

Kang J,He S,Zhou W,Shen Z,Li Y,Chen M,Zhang Q,Wang Y

doi

10.1038/s41467-020-14672-8

subject

Has Abstract

pub_date

2020-02-11 00:00:00

pages

827

issue

1

issn

2041-1723

pii

10.1038/s41467-020-14672-8

journal_volume

11

pub_type

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