Binary ZnO/ZnCr nanospinel catalysts prepared by a hydrothermal method for isobutanol synthesis from syngasElectronic supplementary information (ESI) available. See DOI: 10.1039/c8cy00030a

Binary ZnO/ZnCr nanospinel catalysts prepared by a hydrothermal method for isobutanol synthesis... A series of binary ZnO/ZnCr nanospinel catalysts were prepared by a hydrothermal method and applied in direct synthesis of isobutanol from syngas, during which the effect of the hydrothermal time/temperature on the catalytic performance in the isobutanol synthesis has been investigated at 400 C and 10 MPa. The catalysts were characterized by XRD, N2 adsorptiondesorption, TPR, TPD, FT-IR spectroscopy, XPS, XRF, SEM and TEM. The XRD and TEM results show that the binary ZnO/ZnCr nanospinel structure forms well by the hydrothermal method. Compared with other ZnCr catalysts, the catalyst prepared under the hydrothermal conditions of 16 h and 160 C has the largest BET area with the largest amount of active sites, leading to a high total alcohol production rate (TAPR). Meanwhile, the surface Zn/Cr molar ratio (1.27) and K content (1.64%) on the ZnCr-16-160 catalyst are higher. The enrichment phenomenon of Zn on the catalyst surface could improve the interaction between ZnO and a non-stoichiometric ZnCr spinel, forming a ZnO layer mixed with the ZnCr spinel. Since K is known as a C-chain increasing promoter, the high K content is helpful in improving the total alcohol and isobutanol selectivity. Thus, the appropriate hydrothermal time and temperature for the binary ZnO/ZnCr catalyst preparation are 16 h and 160 C, respectively, and the best catalytic performance is obtained on the ZnCr-16-160 catalyst with a total alcohol selectivity of 60.2% and an isobutanol distribution of 27.0 wt%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Catalysis Science & Technology Royal Society of Chemistry

Binary ZnO/ZnCr nanospinel catalysts prepared by a hydrothermal method for isobutanol synthesis from syngasElectronic supplementary information (ESI) available. See DOI: 10.1039/c8cy00030a

Loading next page...
 
/lp/rsc/binary-zno-zncr-nanospinel-catalysts-prepared-by-a-hydrothermal-method-fMEro8MIlt
Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
2044-4753
eISSN
2044-4761
D.O.I.
10.1039/c8cy00030a
Publisher site
See Article on Publisher Site

Abstract

A series of binary ZnO/ZnCr nanospinel catalysts were prepared by a hydrothermal method and applied in direct synthesis of isobutanol from syngas, during which the effect of the hydrothermal time/temperature on the catalytic performance in the isobutanol synthesis has been investigated at 400 C and 10 MPa. The catalysts were characterized by XRD, N2 adsorptiondesorption, TPR, TPD, FT-IR spectroscopy, XPS, XRF, SEM and TEM. The XRD and TEM results show that the binary ZnO/ZnCr nanospinel structure forms well by the hydrothermal method. Compared with other ZnCr catalysts, the catalyst prepared under the hydrothermal conditions of 16 h and 160 C has the largest BET area with the largest amount of active sites, leading to a high total alcohol production rate (TAPR). Meanwhile, the surface Zn/Cr molar ratio (1.27) and K content (1.64%) on the ZnCr-16-160 catalyst are higher. The enrichment phenomenon of Zn on the catalyst surface could improve the interaction between ZnO and a non-stoichiometric ZnCr spinel, forming a ZnO layer mixed with the ZnCr spinel. Since K is known as a C-chain increasing promoter, the high K content is helpful in improving the total alcohol and isobutanol selectivity. Thus, the appropriate hydrothermal time and temperature for the binary ZnO/ZnCr catalyst preparation are 16 h and 160 C, respectively, and the best catalytic performance is obtained on the ZnCr-16-160 catalyst with a total alcohol selectivity of 60.2% and an isobutanol distribution of 27.0 wt%.

Journal

Catalysis Science & TechnologyRoyal Society of Chemistry

Published: May 24, 2018

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off