Alkylation of benzene with propylene over MCM-36: A comparative study with MCM-22 zeolite synthesized from the same precursors

Xing, Huaizhong; Yang, Piaoping; Wu, Peng; Jia, Mingjun; Sun, Jiang; Wu, Tonghao

doi:10.1007/s11144-007-4972-0

Cited by 18 publications

(9 citation statements)

References 15 publications

(18 reference statements)

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“…N 2 sorption data that reflected the pore structures of samples are shown in Figure and Table . The adsorption/desorption isotherm of ERB-1 shows standard Type I isotherm, which is the characteristic isotherm of microporosity, indicating that the sample belongs to microporous materials. − Moreover, compared with ERB-1, the D-ERB-1 presents a similar adsorption/desorption isotherm. The S BET and V total of D-ERB-1 shows practically almost the same value, compared with ERB-1.…”

Section: Resultsmentioning

confidence: 96%

Synthesis of Titanium-Incorporated MWW Zeolite by Sequential Deboronation and Atom-Planting Treatment of ERB-1 as an Epoxidation Catalyst

Yan

Jin

Ding

et al. 2019

Ind. Eng. Chem. Res.

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A novel titanosilicate zeolite was synthesized by a sequential treatment of ERB-1 with deboronation and atom-planting method to develop an epoxide catalyst. The Fourier transform infrared (FTIR) and the diffuse reflectance infrared Fourier transform (DRIFT) characteristic results reveal that the silanol hydroxyl nests generated by deboronation process are further consumed by the dehydrochlorination of TiCl4 during the atom-planting treatment. At the same time, the titanium species are incorporated into the framework of MWW structure. The energy-dispersive spectroscopy (EDS), ultraviolet-visible light (UV-vis), and ultraviolet resonance Raman spectroscopy (UVRRS) characterization results reveal that the amount and coordination states of the incorporated Ti species can be controlled by the atom-planting treatment time and temperature. The catalytic performance of the new titanosilicates in the epoxidation of 1-hexene with H2O2 and of cyclohexene with tert-butyl hydroperoxide is compared for the efficiency of Ti species in the hydrophilic and hydrophobic system. The catalytic results show the framework tetrahedral coordinated titanium species are more efficient for epoxidation than extra-framework octahedral Ti species.

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Section: Resultsmentioning

confidence: 96%

Synthesis of Titanium-Incorporated MWW Zeolite by Sequential Deboronation and Atom-Planting Treatment of ERB-1 as an Epoxidation Catalyst

Yan

Jin

Ding

et al. 2019

Ind. Eng. Chem. Res.

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“…Owing to their properties, MWW materials have been used in a number of different applications, and it has been found that they can be considered promising catalysts for several organic reactions, for example for isobutene-2-butene alkylation, 64 as well as alkylation of benzene with propylene. 65 The uniqueness of these catalysts is that they combine the properties of both conventional zeolite systems and layered materials. The expansion of the areas of application of MWW materials necessitates a deeper understanding of the impact of structural features on their activity in conversion of organic molecules.…”

Section: Introductionmentioning

confidence: 99%

Peculiar behavior of MWW materials in aldol condensation of furfural and acetone

et al. 2014

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MWW family of different structural types (MCM-22, MCM-49, MCM-56 and MCM-36) was used as catalysts for aldol condensation of furfural and acetone studied in a batch reactor at 100 °C, autogenous pressure and a reaction time of 0-4 h. To establish a relation between physico-chemical and catalytic properties of microporous materials, the samples were characterized by XRD, SEM, N2 adsorption, FTIR and TGA. It was found that the acidic solids possessed appreciable activity in the reaction and resulted in the formation of products of aldehyde-ketone interaction. Surprisingly, MCM-22 and MCM-49, i.e. three-dimensional materials containing internal supercages, exhibited higher activity than two MCM-36 catalysts with two-dimensional character having larger accessible external surface area due to expansion of the interlayer space by swelling and pillaring treatments. Moreover, all MWW family catalysts gave higher conversion than the large-pore zeolite BEA. Nevertheless, furfural conversion decreased rapidly for all the studied materials due to coke formation. Unexpectedly, the deactivation was found to be more severe for MCM-36 catalysts than for MCM-22 and MCM-49, which was attributed to the reaction taking place also in supercages that are protected by 10-ring channels from severe coking. In contrast the cups located on the external surface were coked rapidly.

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“…The zeolite MCM-22 is widely used in various catalytic reactions such as disproportionation of toluene [5], aromatization of methane [6], alkylation of benzene [7], alkane cracking reactions [8], methanol-to-olefin conversion [9], and also as an additive in FCC catalysts [10] due to its acidity, which is not restricted to acid sites inside the porous systems, but also presents acid sites located in the semi cavities (''cups'') on the outer surface of the crystallites [11].…”

Section: Introductionmentioning

confidence: 99%

Efficiency of zeolite MCM-22 with different SiO2/Al2O3 molar ratios in gas phase glycerol dehydration to acrolein

Carriço

Cruz

Santos

et al. 2013

Microporous and Mesoporous Materials

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Alkylation of benzene with propylene over MCM-36: A comparative study with MCM-22 zeolite synthesized from the same precursors

Abstract: Pillared layered MCM-36 zeolite was prepared from MCM-22 precursor with polymeric silica as pillaring agent. Both MCM-36 and MCM-22 zeolites are very active for the alkylation of benzene with propylene, and MCM-36 shows higher selectivity to cumene compared with MCM-22 zeolite.

Cited by 18 publications

References 15 publications

Synthesis of Titanium-Incorporated MWW Zeolite by Sequential Deboronation and Atom-Planting Treatment of ERB-1 as an Epoxidation Catalyst

Synthesis of Titanium-Incorporated MWW Zeolite by Sequential Deboronation and Atom-Planting Treatment of ERB-1 as an Epoxidation Catalyst

Peculiar behavior of MWW materials in aldol condensation of furfural and acetone

Efficiency of zeolite MCM-22 with different SiO2/Al2O3 molar ratios in gas phase glycerol dehydration to acrolein

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