Thetford-Mines, Canada
Thetford-Mines, Canada

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Oleotek Inc. | Date: 2015-05-01

Methacrylated cardanol glycidyl ethers, diglycidyl ethers, intermediates and derivatives thereof are described herein. Compositions and polymers made with such compounds as well as methods of preparation thereof are also described. For example, compounds of Formulas: wherein n, R_(1), R_(2), R_(3), R_(4), R_(5), and R_(6 )can each represent various different entities are described in the present disclosure.

Azzouz A.,University of Quebec at Montréal | Nousir S.,University of Quebec at Montréal | Platon N.,University of Bacau | Ghomari K.,University of Quebec at Montréal | And 5 more authors.
International Journal of Greenhouse Gas Control | Year: 2013

Three polyglycerol dendrimers with average molecular weights of 500, 1100, and 1700 were obtained starting from glycidol derived from soybean oil. Intercalation of Na-montmorillonite with these dendrimers produced effective organo-Mt adsorbents (NaMt-500, NaMt-1100 and NaMt-1700, respectively) for the reversible capture of CO2. The CO2 retention capacity (QCO2) was assessed through temperature-programmed desorption (TPD), and was found to increase with the number of OH groups incorporated. The latter turned out to be the main adsorption sites. Paradoxically, high dendrimer loadings and larger dendrimer generation did not necessarily raise the amount of adsorbed CO2, because of the formation of dendrimer clusters, which significantly reduces the number of accessible OH groups. The highest QCO2 values were registered for NaMt-1700 (3.88-7.14), NaMt-1100-1 (5.24) and NaMt-500 (11.70-16.42μmolg-1) at loading grades. Such adsorbents can release CO2 at much lower temperatures as compared to amines and other base-like compounds, and turn out to be more suitable for CO2 concentration from major emission sources prior to sequestration or uses in chemical or biological processes. This opens new prospects for the preparation of effective CO2 adsorbents starting from low-cost and ecofriendly materials like clay minerals and hyperbranched polyalcohols deriving from vegetal oils. © 2013.

Nousir S.,University of Quebec at Montréal | Platon N.,University of Bacau | Ghomari K.,University of Quebec at Montréal | Sergentu A.-S.,University of Bacau | And 5 more authors.
Journal of Colloid and Interface Science | Year: 2013

Polyalcohol incorporation was found to enhance the hydrophilic character of montmorillonite and its affinity towards carbon dioxide. CO2 adsorption occurred in both dry and humid conditions, but higher amounts were retained in the presence of moisture. This suggests two adsorption pathways: 1. direct OHCO2 interaction and 2. more predominantly via indirect ternary OHH2OCO2 interactions. The retained amounts of water and CO2 increased almost proportionally with the number of OH groups incorporated, thus providing clear evidence that these groups act as adsorption sites. The improvement of the CO2 retention capacity (CRC) appears to be also due to the enhancement of the hydrophilic character of the adsorbent. The CRC value was found to strongly depend on the operating conditions. The major part of the retained CO2 was desorbed at 60-70°C from hydrated matrices, but at 20-50°C from dry adsorbents. CO2 can be easily released even at room temperature through forced convection under a gas stream, or under static conditions in dry and CO2-free media, e.g. in the presence of KOH pellets. It results that the CO2 retention also involves physical interactions. These results open new prospects for the reversible capture of other gases on low-cost hybrid adsorbents without thermal regeneration. © 2013 Published by Elsevier Inc.

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