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Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium

Supported ruthenium (Ru) has the capacity to catalyze the conjugation of double bonds in linoleic acid (LA) into conjugated linoleic acids (CLAs). It has been reported that CLAs have shown a lot of benefits to human health. To enhance the selectivity of cottonseed oil (CSO) to CLAs, various Ru catal...

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Autores principales: Liu, Shulai, Yu, Bokai, Wang, Zegao, Hu, Jie, Fu, Mingwen, Wang, Yong, Liu, Jianhua, Guo, Zheng, Xu, Xuebing, Ding, Yuting
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065710/
https://www.ncbi.nlm.nih.gov/pubmed/35515563
http://dx.doi.org/10.1039/c9ra02640a
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author Liu, Shulai
Yu, Bokai
Wang, Zegao
Hu, Jie
Fu, Mingwen
Wang, Yong
Liu, Jianhua
Guo, Zheng
Xu, Xuebing
Ding, Yuting
author_facet Liu, Shulai
Yu, Bokai
Wang, Zegao
Hu, Jie
Fu, Mingwen
Wang, Yong
Liu, Jianhua
Guo, Zheng
Xu, Xuebing
Ding, Yuting
author_sort Liu, Shulai
collection PubMed
description Supported ruthenium (Ru) has the capacity to catalyze the conjugation of double bonds in linoleic acid (LA) into conjugated linoleic acids (CLAs). It has been reported that CLAs have shown a lot of benefits to human health. To enhance the selectivity of cottonseed oil (CSO) to CLAs, various Ru catalysts supported by multiwalled carbon nanotubes (Ru/MWCNTs) were prepared using a microwave-heated ethylene glycol method. All catalysts were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma optical emission spectrometry (ICP-OES). The catalytic efficiency/selectivity of Ru/MWCNTs and two commercially available Ru catalysts (Ru/C and Ru/Al(2)O(3)) were investigated in a solvent-free system by catalyzing the isomerization of CSO. TEM analysis showed that Ru nanoparticles with average sizes of 1.0 nm to 1.8 nm were uniformly dispersed on the surface of the supports. Among the as-synthesized Ru/MWCNTs, catalyst S1 (diameter < 8 nm, length 0.5–2 μm) and catalyst S4 (diameter < 8 nm, length 10–30 μm) exhibit excellent catalytic performance for isomerization of CSO with high yield of total CLA (15.91% and 11.56%, respectively) and high turnover frequency (TOF) of 10.39 and 11.38 h(−1), which is much better than two typical commercial Ru catalysts (Ru/Al(2)O(3) and Ru/C). It has been revealed that the average particle size and chemical state of Ru on the surface of MWCNTs have influence on the activity and selectivity of the isomerization reaction.
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spelling pubmed-90657102022-05-04 Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium Liu, Shulai Yu, Bokai Wang, Zegao Hu, Jie Fu, Mingwen Wang, Yong Liu, Jianhua Guo, Zheng Xu, Xuebing Ding, Yuting RSC Adv Chemistry Supported ruthenium (Ru) has the capacity to catalyze the conjugation of double bonds in linoleic acid (LA) into conjugated linoleic acids (CLAs). It has been reported that CLAs have shown a lot of benefits to human health. To enhance the selectivity of cottonseed oil (CSO) to CLAs, various Ru catalysts supported by multiwalled carbon nanotubes (Ru/MWCNTs) were prepared using a microwave-heated ethylene glycol method. All catalysts were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma optical emission spectrometry (ICP-OES). The catalytic efficiency/selectivity of Ru/MWCNTs and two commercially available Ru catalysts (Ru/C and Ru/Al(2)O(3)) were investigated in a solvent-free system by catalyzing the isomerization of CSO. TEM analysis showed that Ru nanoparticles with average sizes of 1.0 nm to 1.8 nm were uniformly dispersed on the surface of the supports. Among the as-synthesized Ru/MWCNTs, catalyst S1 (diameter < 8 nm, length 0.5–2 μm) and catalyst S4 (diameter < 8 nm, length 10–30 μm) exhibit excellent catalytic performance for isomerization of CSO with high yield of total CLA (15.91% and 11.56%, respectively) and high turnover frequency (TOF) of 10.39 and 11.38 h(−1), which is much better than two typical commercial Ru catalysts (Ru/Al(2)O(3) and Ru/C). It has been revealed that the average particle size and chemical state of Ru on the surface of MWCNTs have influence on the activity and selectivity of the isomerization reaction. The Royal Society of Chemistry 2019-07-02 /pmc/articles/PMC9065710/ /pubmed/35515563 http://dx.doi.org/10.1039/c9ra02640a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Liu, Shulai
Yu, Bokai
Wang, Zegao
Hu, Jie
Fu, Mingwen
Wang, Yong
Liu, Jianhua
Guo, Zheng
Xu, Xuebing
Ding, Yuting
Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium
title Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium
title_full Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium
title_fullStr Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium
title_full_unstemmed Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium
title_short Highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium
title_sort highly selective isomerization of cottonseed oil into conjugated linoleic acid catalyzed by multiwalled carbon nanotube supported ruthenium
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065710/
https://www.ncbi.nlm.nih.gov/pubmed/35515563
http://dx.doi.org/10.1039/c9ra02640a
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