Study of the catalytic activity of calcined hydrotalcites for Friedel–Crafts reactions

Study of the catalytic activity of calcined hydrotalcites for Friedel–Crafts reactions The structure of hydrotalcite (HT)-like compounds, also know as layered double hydroxides and anionic clays, can be described as containing brucite-like layers. In this study, we aim to compare the following different types of catalyst: NiMgAl-HT, CoMgAl-HT, NiMgLa-HT, and CoMgLa-HT. These samples were prepared by coprecipitation at constant basic pH (pH 11). The obtained solids were calcined at 450 °C. Hydrotalcite catalysts were characterized by atomic absorption spectroscopy (AAS), X-ray powder diffraction (XRD), Fourier-transform infrared (FTIR) analysis, and the Brunauer–Emmett–Teller (BET) method. The data obtained from chemical analysis of the calcined catalysts confirmed that the n (M2+/M3+) ratio is close to the intended value of 2. The XRD patterns confirmed the hydrotalcite structure. Room-temperature FTIR spectra were recorded in the range from 4,000 to 400 cm−1 on a PerkinElmer spectrometer. These catalysts were tested for the benzylation of by benzyl chloride reaction. Generally, the studies of activity showed that the catalytic performance varies as follows: NiMgAl-HT > CoMgAl-HT > NiMgLa-HT > CoMgLa-HT > MgAl-HT ≈ MgLa-HT. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Study of the catalytic activity of calcined hydrotalcites for Friedel–Crafts reactions

Loading next page...
 
/lp/springer_journal/study-of-the-catalytic-activity-of-calcined-hydrotalcites-for-friedel-fEMeq9j60U
Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1309-7
Publisher site
See Article on Publisher Site

Abstract

The structure of hydrotalcite (HT)-like compounds, also know as layered double hydroxides and anionic clays, can be described as containing brucite-like layers. In this study, we aim to compare the following different types of catalyst: NiMgAl-HT, CoMgAl-HT, NiMgLa-HT, and CoMgLa-HT. These samples were prepared by coprecipitation at constant basic pH (pH 11). The obtained solids were calcined at 450 °C. Hydrotalcite catalysts were characterized by atomic absorption spectroscopy (AAS), X-ray powder diffraction (XRD), Fourier-transform infrared (FTIR) analysis, and the Brunauer–Emmett–Teller (BET) method. The data obtained from chemical analysis of the calcined catalysts confirmed that the n (M2+/M3+) ratio is close to the intended value of 2. The XRD patterns confirmed the hydrotalcite structure. Room-temperature FTIR spectra were recorded in the range from 4,000 to 400 cm−1 on a PerkinElmer spectrometer. These catalysts were tested for the benzylation of by benzyl chloride reaction. Generally, the studies of activity showed that the catalytic performance varies as follows: NiMgAl-HT > CoMgAl-HT > NiMgLa-HT > CoMgLa-HT > MgAl-HT ≈ MgLa-HT.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jun 29, 2013

References

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