Catalytic behavior of sulfated TiO2 in light olefins oligomerization

Mantilla, A.; Ferrat, G.; López-Ortega, A.; Romero, E.; Tzompantzi, Francisco; Torres, M.; Ortiz-Islas, Emma; Gómez, R.

doi:10.1016/j.molcata.2004.09.080

Cited by 57 publications

(47 citation statements)

References 17 publications

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“…Nevertheless, titania samples under the study also exhibited reasonable acidity. Indeed, the presence of different acid sites in TiO 2 was reported repeatedly [55][56][57][58]. It was suggested that the Lewis and Brønsted acid sites responsible for the catalytic activity of these materials could be generated from adsorbed water molecules [57].…”

Section: Tablementioning

confidence: 95%

“…It was suggested that the Lewis and Brønsted acid sites responsible for the catalytic activity of these materials could be generated from adsorbed water molecules [57]. Among two titania samples, the TiO 2 500 uptakes a higher amount of ammonia (256 mol g −1 ) than the TiO 2 P25 (140 mol g −1 ), implying a greater presence of active acid sites [57] in the synthesized material. The shape of NH 3 TPD curves (Fig.…”

Section: Tablementioning

confidence: 99%

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Nanosized TiO2—A promising catalyst for the aldol condensation of furfural with acetone in biomass upgrading

et al. 2016

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a b s t r a c t Nanosized TiO 2 catalyst was successfully prepared by a simple green procedure and used in liquid phase aldol condensation of furfural with acetone, a key step in bio-fuel processing. In order to determine the effect of calcination temperature on catalytic properties of TiO 2 , the as-prepared TiO 2 and calcined TiO 2 (150-900• C) were studied by XRD, BET, TPD-CO 2 /NH 3 , TGA/DTG and FTIR evaluation. The catalytic performance of TiO 2 samples in aldol condensation of furfural with acetone was evaluated and compared with that of Mg-Al hydrotalcites and a BEA zeolite. These experiments showed that uncalcined TiO 2 possessed reasonable activity in aldol condensation of furfural to acetone and resulted in commonly produced condensation products. The observed catalytic behavior of TiO 2 could be competitive with that reported for other inorganic solids. The calcination of TiO 2 resulted, however, in a decrease in its catalytic activity due to extensive dehydration and surface dehydroxylation as well as due to changes of textural properties resulting in a decrease in the amount of accessible active sites. Thanks to its advanced properties, nanosized TiO 2 is a promising catalyst for aldol condensation of furfural with acetone and could broaden possibilities for optimizing conditions for bio-fuel production.

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Section: Tablementioning

confidence: 95%

Section: Tablementioning

confidence: 99%

Nanosized TiO2—A promising catalyst for the aldol condensation of furfural with acetone in biomass upgrading

et al. 2016

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“…People are trying to replace them with solid acids. Among the solid acids, the sulfate-promoted metal oxides have been attracting more and more attention in recent years [1][2][3][4][5][6][7] due to their unique advantages over those traditional liquid acid catalysts. For example, they are quite stable to moisture, air, and heat, and they are also less corrosive to reactors and containers, and they are also environmentally friendly [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…For example, they are quite stable to moisture, air, and heat, and they are also less corrosive to reactors and containers, and they are also environmentally friendly [8][9][10][11][12][13]. Above all, they exhibit extremely high initial activities in catalyzing many organic reactions such as esterification, isomerization of n-alkanes, cracking reaction, and so forth, even at very mild conditions [2][3][4][5][9][10][11][12][13]. However, there is a fatal problem for people to utilize them as practical catalysts in chemical industry to replace those liquid acid catalysts with them.…”

Section: Introductionmentioning

confidence: 99%

A New Deactivation Mechanism of Sulfate-Promoted Iron Oxide

Shi

2013

Catal Lett

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“…Recently, trimerization of light olefins has attracted considerable attention as a method for the production of fuel additives 1 and separation of isoolefins from other olefins. 2 Triisobutenes, for example, are considered to be highly useful for the synthesis of specialty chemicals.…”

Section: Introductionmentioning

confidence: 99%

Trimerization of Isobutene over Solid Acid Catalysts: Comparison between Cation-exchange Resin and Zeolite Catalysts

2008

Bulletin of the Korean Chemical Society

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Catalytic trimerization of isobutene to produce triisobutenes has been performed over cation-exchange resin and zeolite catalysts. Resin catalysts have the advantage of long lifetime and high trimers selectivity even though the regeneration of an aged catalyst is not satisfactory. On the contrary, zeolite catalysts can be regenerated facilely by simple calcination in air even though the lifetime is short and trimers selectivity is low probably due to small pore size and strong acidity, respectively. It is, therefore highly desirable to develop an inorganic acid catalyst with macro-or meso-pores to show catalytic performances similar or superior to those of macroporous resin catalysts.

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Catalytic behavior of sulfated TiO2 in light olefins oligomerization

Cited by 57 publications

References 17 publications

Nanosized TiO2—A promising catalyst for the aldol condensation of furfural with acetone in biomass upgrading

Nanosized TiO2—A promising catalyst for the aldol condensation of furfural with acetone in biomass upgrading

A New Deactivation Mechanism of Sulfate-Promoted Iron Oxide

Trimerization of Isobutene over Solid Acid Catalysts: Comparison between Cation-exchange Resin and Zeolite Catalysts

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