Decarboxylation of oleic acid over Pt catalysts supported on small-pore zeolites and hydrotalcite

Ahmadi, Masoumeh; Nambo, Apolo; Jasiński, Jacek B.; Ratnasamy, P.; Carreón, Moisés A.

doi:10.1039/c4cy00661e

Cited by 76 publications

(57 citation statements)

References 34 publications

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“…In our studies, zeolite 5A beads acted as acid 36,45 catalytic support, providing a large surface area, and playing an important role on the dispersion of Pt. Our group 32,34 and independent groups 46,47 have observed that acidic supports promote a better (higher) dispersion of the noble metal and therefore result in improved catalytic activity for decarboxylation and dehydroxygenation reactions. STEM revealed that a better Pt dispersion was achieved when Pt was deposited on zeolite 5A as compared to neutral carbon pellets.…”

Section: Acs Catalysismentioning

confidence: 97%

Decarboxylation of Oleic Acid to Heptadecane over Pt Supported on Zeolite 5A Beads

et al. 2015

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The synthesis of Pt supported on zeolite 5A beads for the decarboxylation of oleic acid to heptadecane is demonstrated. The use of a microporous ZIF-67 crystalline layer on zeolite 5A beads not only improved the heptadecane selectivity but also, most importantly, improved the stability of the resultant catalyst. Heptadecane yields as high as ∼81% were observed for the fresh catalysts. The catalysts displayed only low to moderate loss of catalytic activity after two rounds of recycle. To our best knowledge, the catalytic performance of these catalysts is superior to those of the state-of-the-art catalysts at mild reaction conditions. In addition, as compared to powders, beads are much easier to recycle, can be fully recovered, and are more amenable for potential scale-up. The resultant catalysts are promising for the catalytic conversion of fatty acid molecules into gasoline/diesel-range hydrocarbons.

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Section: Acs Catalysismentioning

confidence: 97%

Decarboxylation of Oleic Acid to Heptadecane over Pt Supported on Zeolite 5A Beads

et al. 2015

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“…Fig. 33 The presence of H 2 promoted the hydrogenation of oleic acid to stearic acid which then undergoes facile decarboxylation. 41,42 The metal organic framework Cu 3 ĲBTC) 2 (BTC = benzene-1,3,5tricarboxylate) is an appealing material to employ as catalyst for the decarboxylation of fatty acid molecules due to the presence of Lewis acid coordination sites (Cu) in its framework.…”

Section: Resultsmentioning

confidence: 99%

“…Reaction conditions were chosen based on our previous experience in the decarboxylation of fatty acids 32,33 to optimize the yield of hydrocarbons. The reactions were conducted in a 100 mL stainless steel, high pressure batch reactor (Parr model 4560).…”

Section: Reaction Proceduresmentioning

confidence: 99%

“…30 In most of these reports, the support is a catalytically inert material like carbon or relatively, non-acidic components, like silica or non-acidic alumina. 33 Metal organic frameworks (MOFs) 34,35 have emerged as an appealing type of crystalline microporous materials which combine highly desirable properties, such as uniform micropores, high surface areas, and exceptional thermal and chemical stability, making them ideal candidates for catalytic applications. 33 Metal organic frameworks (MOFs) 34,35 have emerged as an appealing type of crystalline microporous materials which combine highly desirable properties, such as uniform micropores, high surface areas, and exceptional thermal and chemical stability, making them ideal candidates for catalytic applications.…”

Section: Introductionmentioning

confidence: 99%

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Cu, Al and Ga based metal organic framework catalysts for the decarboxylation of oleic acid

Yang

Ruess

Carreón

2015

Catal. Sci. Technol.

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Herein we demonstrate the catalytic decarboxylation and conversion of oleic acid to paraffins and hydrocarbons over bare and Pt supported Cu, Al and Ga based metal organic frameworks. Moderate degrees of decarboxylation were observed for all metal organic framework catalysts. The incorporation of Pt with the porous frameworks resulted in high degrees of decarboxylation. All MOF catalysts showed high thermal stability, resulting in recyclable catalysts displaying low catalytic activity loss. Of all studied catalysts, Ga-MOF catalysts were the most effective catalysts, displaying moderate to high degrees of decarboxylation. In addition, the Pt-Ga-MOF catalyst displayed selectivity to heptadecane, an important industrial chemical. Octadecane, heptadecane, dodecane, undecane, decane, nonane, octane, and heptane were observed as the main side products. To our best knowledge, the catalytic ability of a metal organic framework both as catalyst and support for the decarboxylation of a model fatty acid molecule is reported for the first time.Catal. Sci. Technol. This journal is

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“…Nevertheless, the higher cost of noble metals hinders their use as catalytic phase for industrial-scale processes. A preliminary conclusion can be: NAL7 yield is close to that shown by the granulated activated carbon catalyst [14], and shows a higher catalyst performance compared to 5 wt % Pt supported on small-pore zeolites [13]. Pt-SAPO-34 5 wt % Pt 2 g of catalyst, P = 20 bar, T = 355 • C, t = 2 h. n-C 17 66.…”

Section: Conversion Of Oleic Acid By Hydrodeoxygenationmentioning

confidence: 99%

Effect of Size and Distribution of Ni Nanoparticles on γ-Al2O3 in Oleic Acid Hydrodeoxygenation to Produce n-Alkanes

et al. 2016

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Abstract:To contribute to the search for an oxygen-free biodiesel from vegetable oil, a process based in the oleic acid hydrodeoxygenation over Ni/γ-Al 2 O 3 catalysts was performed. In this work different wt % of Ni nanoparticles were prepared by wetness impregnation and tested as catalytic phases. Oleic acid was used as a model molecule for biodiesel production due to its high proportion in vegetable oils used in food and agro-industrial processes. A theoretical model to optimize yield of n-C 17 was developed using size, distribution, and wt % of Ni nanoparticles (NPs) as additional factors besides operational conditions such as temperature and reaction time. These mathematical models related to response surfaces plots predict a higher yield of n-C 17 when physical parameters of Ni NPs are suitable. It can be of particular interest that the model components have a high interaction with operation conditions for the n-C 17 yields, with the size, distribution, and wt % of Ni NPs being the most significant. A combination of these factors statistically pointed out those conditions that create a maximum yield of alkanes; these proved to be affordable for producing biodiesel from this catalytic environmental process.

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Decarboxylation of oleic acid over Pt catalysts supported on small-pore zeolites and hydrotalcite

Abstract: The catalytic decarboxylation and further conversions of oleic acid to paraffins, branched and aromatic hydrocarbons over Pt supported on small pore zeolites and hydrotalcite are demonstrated.

Cited by 76 publications

References 34 publications

Decarboxylation of Oleic Acid to Heptadecane over Pt Supported on Zeolite 5A Beads

Decarboxylation of Oleic Acid to Heptadecane over Pt Supported on Zeolite 5A Beads

Cu, Al and Ga based metal organic framework catalysts for the decarboxylation of oleic acid

Effect of Size and Distribution of Ni Nanoparticles on γ-Al2O3 in Oleic Acid Hydrodeoxygenation to Produce n-Alkanes

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