Transesterification reactions over morphology controlled amino-functionalized SBA-15 catalysts

Saravanamurugan, Shunmugavel; Sujandi,; Han, Dae-Soo; Koo, Jun Mo; Park, Sang-Eon

doi:10.1016/j.catcom.2007.06.002

Cited by 50 publications

(27 citation statements)

References 23 publications

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“…They studied the morphologies of catalysts and the molecular shapes of alcohols related to the different activities for the transesterification of diethyl manolates [75]. The conversion of diethyl manolates decreased as the reaction was repeated several times.…”

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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Section: Zeolitementioning

confidence: 99%

Heterogeneous Base Catalysts for Transesterification in Biodiesel Synthesis

2009

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“…[27][28][29][30][31][32][33] Notably, it was reported that some amino-functionalized materials were efficient catalysts for the transesterification reactions of esters (i.e., ethylene carbonate, diethylmalonate and β-ketoester) with alcohols. [34][35][36][37] During the past few years, our group has also carried out some work on developing novel heterogeneous catalysts for the transesterification of phenol with DMO, 15,18,38 and we just reported recently that cyclopentadienylfunctionalized mesoporous MCM-41 materials bearing weak basic sites were active catalysts for this reaction. 38 In the continuation of this work, several hybrid mesoporous MCM-41 materials containing different amino groups (such as 3-aminopropyl (AP-), (2-aminoethylamino) propyl (AAP-), or [2-(2-aminoethylamino)ethylamino] propyl (AEP-) group) were prepared by a post-grafting method, and their catalytic properties were investigated for the transesterification of DMO with phenol in the present work.…”

Section: Introductionmentioning

confidence: 99%

“…[15][16][17][18][19] Recently, the heterogenization of organic bases has become an interesting subject owing to a variety of basic compounds showing unusual performance for different catalytic reactions. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] For example, amino-functionalized mesoporous materials have attracted much attention for their wide applications in Knoevenagel condensation, aldol reaction, nitroaldol reaction, Michael additions, and epoxide ring-opening reactions. [27][28][29][30][31][32][33] Notably, it was reported that some amino-functionalized materials were efficient catalysts for the transesterification reactions of esters (i.e., ethylene carbonate, diethylmalonate and β-ketoester) with alcohols.…”

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confidence: 99%

Comparative study on the catalytic properties of amino-functionalized silica materials for the transesterification of dimethyl oxalate with phenol

Liu¹,

Zhao²,

Zhu³

et al. 2010

J. Braz. Chem. Soc.

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Uma série de materiais híbridos mesoporos MCM-41, contendo diferentes grupos amino (como 3-aminopropila (AP-), (2-aminoetilamino)propila (AAP-), ou [2-(2-aminoetilamino) etilamino]propila (AEP-)) foi preparada pelo método de pós-enxertia e caracterizada por difração de raio X de pó (XRD), adsorção de N 2 , espectroscopia de infravermelho com transformada de Fourier (FT-IR) e dessorção de CO 2 com temperatura controlada (CO 2 -TPD). As propriedades catalíticas destes materiais híbridos para a reação de transesterificação de dimetil oxalato com fenol foram investigadas. Verificou-se que todos são ativos, particularmente o AEP-MCM-41, que apresentou a maior atividade dentre eles. Apenas um pequeno decréscimo na atividade foi observado após vários ensaios catalíticos sucessivos utilizando o mesmo catalisador, indicando uma boa reciclabilidade do mesmo. Notavelmente, a atividade do catalisador pode ser regenerado por simples tratamento com base, sob condições brandas. Além disso, os efeitos da densidade e da força básica dos grupos amino sobre as propriedades catalíticas foram exploradas na proposição do mecanismo de reação, incluindo a provável rota que leva à formação do subproduto anisol.A series of hybrid mesoporous MCM-41 materials containing different amino groups (such as 3-aminopropyl (AP-), (2-aminoethylamino)propyl (AAP-), or [2-(2-aminoethylamino)ethylamino] propyl (AEP-) group) were prepared by a post-grafting method, and characterized by means of X-ray powder diffraction (XRD), N 2 adsorption, Fourier transform-infrared spectroscopy (FT-IR) and temperature-programmed desorption of CO 2 (CO 2 -TPD). The catalytic properties of these hybrid materials were investigated for the transesterification of dimethyl oxalate with phenol. All the samples were active for the transesterification. Among them, the sample AEP-MCM-41 exhibited the highest activity under test conditions. And only a slight decrease in activity could be observed after few runs, indicating the good recyclability of this catalyst. Notably, the activity of the used catalyst could be regenerated by simple treatment with diluted basic agents under mild conditions. Moreover, effects of the density and the basic strength of the amino groups on the catalytic properties were taken into consideration for understanding the reaction mechanism and the possible formation route of the by-product anisole.Keywords: amino-functionalized, MCM-41, dimethyl oxalate, transesterification, recyclability IntroductionDiphenyl carbonate (DPC) is an industrially important intermediate for the production of several organic chemicals, especially as the precursor for the synthesis of polycarbonates (PCs), which have been used in many fields due to excellent mechanical, optical, electrical and heatresistance properties. 1,2 So far, various approaches for DPC synthesis have been reported, including phosgene route, oxidative carbonylation of phenol and transesterification reaction. 1,[3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Among them, transesterification...

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“…Particularly, ordered mesoporous silica materials exhibit remarkable advantages because of their high surface area, large pore volume, tunable pore diameters and flexibility to incorporate different organic-inorganic moieties for various applications in adsorption, ion-exchange and catalysis [1][2][3][4][5][6]. The surface properties can be modified either via co-condensation, in situ or post grafting method [7,8].…”

Section: Introductionmentioning

confidence: 99%

Ferulic acid functionalized mesoporous silica polymer nanocomposites (SBA/FA) for the adsorption of Cr(VI)

et al. 2015

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Ferulic acid (FA) functionalized ordered mesoporous silica (SBA/FA) nanocomposites were synthesized via in situ radical polymerization of vinyl monomers for the adsorption of Cr(VI) toxic ions. Powder X-ray diffraction and N 2 adsorption isotherms showed the presence of mesoporous nature of the nanocomposites after functionalization with FA. Different adsorption parameters such as adsorption weight, adsorption time, pH etc. were optimized for adsorption of Cr(VI) ions under environmental friendly conditions. The adsorption studies results showed high adsorption of functionalized nanocomposites (100-172 mg/g) compared to SBA-15 (60 mg/g) materials.

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Transesterification reactions over morphology controlled amino-functionalized SBA-15 catalysts

Cited by 50 publications

References 23 publications

Heterogeneous Base Catalysts for Transesterification in Biodiesel Synthesis

Heterogeneous Base Catalysts for Transesterification in Biodiesel Synthesis

Comparative study on the catalytic properties of amino-functionalized silica materials for the transesterification of dimethyl oxalate with phenol

Ferulic acid functionalized mesoporous silica polymer nanocomposites (SBA/FA) for the adsorption of Cr(VI)

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