4.6 Article

High Performing and Stable Cu/NiAlOx Catalysts for the Continuous Catalytic Conversion of Ethanol into Butanol

Journal

CHEMCATCHEM
Volume 14, Issue 17, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.202200539

Keywords

ethanol coupling; butanol; hydrotalcite; copper catalyst; Guerbet reaction

Funding

  1. National Natural Science Foundation of China [22102149, 22102147, 22078316, 21973084]
  2. Zhejiang Provincial Natural Science Foundation of China [LQ20B030005, LQ21B030009]

Ask authors/readers for more resources

The study prepared Cu/NiAlOx catalysts through hydrothermal precipitation method and found that Cu addition enhanced the reactivity in the conversion of ethanol into butanol. With sustained ethanol conversion of over 35% and butanol selectivity of around 45%, the catalyst exhibited excellent stability over time.
The catalytic conversion of ethanol into butanol is one of crucial reactions in biorefinery for the production of renewable fuels and chemicals. The development of highly durable non-noble metal-based catalysts is of great significance but poses big challenges. Herein, we prepared a series of NiAl-hydrotalcite derived Cu/NiAlOx catalysts via the hydrothermal precipitation method. Cu addition to the system shows an enhanced reactivity in the continuous catalytic conversion of ethanol into butanol. The 0.75 %Cu/NiAlOx catalyst afford a sustained ethanol conversion of similar to 35 % and butanol selectivity of similar to 45 % within 1000 h at 250 degrees C, 3 MPa N-2. Complementary characterization studies reveal that Cu addition into the catalysts could not only provide redox sites for facilitating the dehydrogenation/hydrogenation processes, but also modulate the base/acid property for suppressing the side reactions. The excellent stability might stem from the enhanced interaction between Cu and Ni species, as evidenced by EDX-mapping and H-2-TPR. We believe this work will help to rational design and develop of high-performing and durable non-noble metal catalysts for ethanol coupling to higher alcohols.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available