Selective glycerol transesterification over mesoporous basic catalysts

Barrault, J.; Bancquart, Sébastien; Pouilloux, Yannick

doi:10.1016/j.crci.2003.12.006

Cited by 49 publications

(27 citation statements)

References 10 publications

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“…This non-reactivity of siliceous materials at 110 8C was attributed to strong hydrophilic interactions between the siliceous surface and glycerol. Indeed, as described for the MgAlMCM-41 catalyst, [44] glycerol was strongly adsorbed on the siliceous surface and at 110 8C hydrophilic interactions were strong enough to avoid the approach of the fatty methyl esters to the catalytic sites.…”

Section: Organic and Organic-inorganic Materialsmentioning

confidence: 96%

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Rational Design of Solid Catalysts for the Selective Use of Glycerol as a Natural Organic Building Block

2008

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Glycerol is the main co-product of the vegetable oils industry (especially biodiesel). With the rapid development of oleochemistry, the production of glycerol is rapidly increasing and chemists are trying to find new applications of glycerol to encourage a better industrial development of vegetable oils. In this Review, attention is focused on the selective use of glycerol as a safe organic building block for organic chemistry. An overview is given of the different heterogeneous catalytic routes developed by chemists for the successful and environmentally friendly use of glycerol in sustainable organic chemistry. In particular, the effects of different catalyst structural parameters are discussed to clearly highlight how catalysis can help organic chemists to overcome the drawbacks stemming from the use of glycerol as a safe organic building block. It is shown that heterogeneous catalysis offers efficient routes for bypassing the traditional use of highly toxic and expensive epichlorohydrin, 3-chloro-1,2-propanediol, or glycidol, which are usually used as a glyceryl donor in organic chemistry.

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Section: Organic and Organic-inorganic Materialsmentioning

confidence: 96%

“…[44] As described earlier (part c, Section 2.2.1.) for esterifications, [27][28][29][30][31][32] a significant hindrance of the porous framework is expected to induce a shape-selectivity effect.…”

Section: B Metal Oxides Dispersed Over Mesoporous Silicamentioning

confidence: 97%

Rational Design of Solid Catalysts for the Selective Use of Glycerol as a Natural Organic Building Block

2008

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“…Suppes et al [53] similarly commented that the liquid phase transesterification benefits from larger pore structures but not as much from the high surface area created by the inner pore structures of zeolites. The emphasis on large pore structure naturally motivated the utilization of mesoporous zeolites such as SBA-15 and MCM-41 [58,67,68].…”

Section: Zeolitementioning

confidence: 99%

Heterogeneous Base Catalysts for Transesterification in Biodiesel Synthesis

2009

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The heterogeneous base-catalyzed transesterification for biodiesel synthesis has been studied intensively over the last decade. This review classifies the solid base catalysts for transesterification into the following six categories based on Hattori's classification: single metal oxides, mixed metal oxides, zeolites, supported alkali/alkaline earth metals, clay minerals (hydrotalcites), and non-oxides (organic solid bases). The catalysts in each category have acceptable catalytic activities overall, and follow specific catalyst design rules, although not completely systematically, thereby drawing the best activity from them. In parallel, each catalyst is not versatile and has some limitations specifically related to its catalytic structure and properties. This review focuses on the heterogeneous base-catalyzed transesterification in terms of catalyst development, based on the published research, especially over the last decade.

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“…In addition to the use in the esterification of FFAs in vegetable oils and animal fats, heterogeneous acid catalysts for biodiesel synthesis could in principle be employed to catalyze the simultaneous reactions of TGs and FFAs with low molecular alcohols in transesterification and esterification, respectively [3]. Among the heterogeneous acid catalysts studied to date for trans/esterification are zeolites [4,5], MCM-41 [6,7], tungstated zirconia [8][9][10], sulfated zirconia [11][12][13][14], Amberlyst-15 [15][16][17] and Nafion [18][19][20][21][22]. Some common problems with solid acid catalysts have been: low acid site concentrations, microporosity, hydrophilic character of catalyst surfaces, and active site leaching.…”

Section: Introductionmentioning

confidence: 99%

A Novel Sulfonated Carbon Composite Solid Acid Catalyst for Biodiesel Synthesis

Lotero

et al. 2008

Catal Lett

187

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A novel sulfonated carbon composite solid acid was successfully prepared by the pyrolysis of a polymer matrix impregnated with glucose followed by sulfonation. The title catalyst has higher acid site density, better esterification activity of both small and large free fatty acids (acetic acid and palmitic acid), and better reusability than the previously reported carbon-based catalyst prepared by sulfonating pyrolyzed sugar. This catalyst also exhibited higher esterification activity than tungstated zirconia (WZ) and Silica-Supported Nafion (Nafion Ò SAC-13). The higher activity of the sulfonated carbon composite solid acid catalyst was clearly due to the presence of a much higher acid site density than any of the other catalysts.

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Selective glycerol transesterification over mesoporous basic catalysts

Cited by 49 publications

References 10 publications

Rational Design of Solid Catalysts for the Selective Use of Glycerol as a Natural Organic Building Block

Rational Design of Solid Catalysts for the Selective Use of Glycerol as a Natural Organic Building Block

Heterogeneous Base Catalysts for Transesterification in Biodiesel Synthesis

A Novel Sulfonated Carbon Composite Solid Acid Catalyst for Biodiesel Synthesis

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