Pt doped H3PW12O40/ZrO2 as a heterogeneous and recyclable catalyst for the synthesis of carbonated soybean oil

Carbonated soybean oil (CSBO) is a precursor of nonisocyanate polyurethanes (NIPUs). So far, the ruling catalysts for CSBO synthesis through the coupling of epoxidized soybean oil (ESBO) with CO2 are homogeneous ones. In this work, a heterogeneous catalyst, 5 wt % H3PW12O40 (PW)/ZrO2 was investigate...

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Bibliographic Details
Published in:Journal of applied polymer science 2012-06, Vol.124 (5), p.4298-4306
Main Authors: Wang, Junwei, Zhao, Yuhua, Li, Qifeng, Yin, Ning, Feng, Yuelai, Kang, Maoqing, Wang, Xinkui
Format: Article
Language:English
Subjects:
Applied sciences
carbonated soybean oil
coupling reaction
Exact sciences and technology
heterogeneous catalyst
Materials science
Model compounds
Organic polymers
Physicochemistry of polymers
Polymers
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Summary:Carbonated soybean oil (CSBO) is a precursor of nonisocyanate polyurethanes (NIPUs). So far, the ruling catalysts for CSBO synthesis through the coupling of epoxidized soybean oil (ESBO) with CO2 are homogeneous ones. In this work, a heterogeneous catalyst, 5 wt % H3PW12O40 (PW)/ZrO2 was investigated for the coupling reaction and proved quite efficient. However, the catalyst showed poor reusability due to the difficult elimination of bulky by–products retained in the spent catalyst. To remedy this deficiency, the 5 wt % PW/ZrO2 was modified with 0.3% Pt. It is found that Pt addition markedly improved the reusability of the 5 wt % PW/ZrO2 without loss in carbonation activity. An ESBO conversion of 78.3% was obtained at the end of third recycle, indicating that Pt species incorporated could promote the removal of the by‐products and hence protect the active centres of 5 wt %PW/ZrO2 catalyst. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
ISSN:0021-8995
1097-4628
DOI:10.1002/app.35418