Hydroconversion of Benzene over ZSM-5 Zeolite

Sano, Tsuneji; Okabe, Kiyomi; Hagiwara, Hiroyuki; Takaya, Haruo; Shoji, Hiroshi; Matsuzaki, Kenji M.

doi:10.1016/0304-5102(87)80011-1

Cited by 21 publications

(6 citation statements)

References 6 publications

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“…The ion current at m/z =44 showed the similar temperature dependence to that of toluene. These suggest dehydrogenation of methane and hydrogenolysis of benzene, because the hydrogenolysis of benzene produces toluene and light hydrocarbon molecules with carbon atoms less than five. The signal at m/z =44 is attributable to C 3 H 8 here on H‐MFI, because C 3 H 8 is speculated to be included in the light hydrocarbons produced by the hydrogenolysis of benzene.…”

Section: Resultsmentioning

confidence: 79%

Reactivity of Methane and Benzene over Metal/MFI Zeolite Analyzed with Temperature‐Programmed Reaction Technique

et al. 2020

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Reactivity of methane and benzene over various metals supported on MFI zeolite was investigated in a wide range of temperature by a temperature-programmed reaction method. The oxidation state was also analyzed, as supported by X-ray absorption near edge structure (XANES). Pt, Rh, and Rh on MFI were reduced at < 600 K, and showed high activity for both benzene methylation and methane dehydrogenation, and hence, low selectivity for the methylation at high temperature.The short catalyst life of Pt/MFI suggests deactivation due to carbonaceous produced by the dehydrogenation. The oxidation state of Co species on ion exchange site of MFI was kept at + II in the experimental range (< 843 K), and relatively high selectivity was observed on Co/MFI even at high temperature.Stable oxidized state of Co species thus contributed to catalyze the target reaction (methylation of benzene with methane).

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Section: Resultsmentioning

confidence: 79%

Reactivity of Methane and Benzene over Metal/MFI Zeolite Analyzed with Temperature‐Programmed Reaction Technique

et al. 2020

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“…Typical reaction conditions in the study of Sano et al were T = 573 • C, p = 4.0 MPa anḋ n H 2 /ṅ C 6 H 6 ≈ 30 [87]. Significantly different products were found in these studies compared with the work of Sano et al [87], viz. Their experiments were conducted at T = 327-377 • C, p = 4.0 MPa andṅ H 2 /ṅ C 6 H 6 ≈ 250.…”

Section: Direct Ring Opening Of Aromatics On Bifunctional Zeolitesmentioning

confidence: 69%

“…As early as 1987, Sano et al [87] showed that, at elevated temperatures and hydrogen pressures, benzene can be converted on H-ZSM-5 zeolites into a mixture of methane, ethane and propane, with toluene and xylenes as byproducts. Moreover, they convincingly demonstrated that activation of the hydrocarbon and dihydrogen occurred on the Brønsted acid sites of the zeolite, rather than on iron impurities.…”

Section: Direct Ring Opening Of Aromatics On Bifunctional Zeolitesmentioning

confidence: 99%

Ring Opening of Aromatics

Weitkamp

2008

Handbook of Heterogeneous Catalysis

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The sections in this article are Introduction Fundamentals of Hydrodecyclization of Cycloalkanes Hydrogenolysis on Metals Hydrocracking on Bifunctional Catalysts Cracking and Activation of Hydrogen on Monofunctional Acidic Catalysts Ring Opening of Aromatics in Diesel and Jet Fuels Bifunctional Catalysts Metal Catalysts Acid Catalysts Ring Opening of Aromatics in Gasoline Without Degradation of the Carbon Number Ring Opening of Aromatics in Pyrolysis Gasoline Followed by Hydrocracking into a Synthetic Steam‐Cracker Feed Hydrodecyclization and Hydrocracking of Cycloalkanes on Acid Zeolites Direct Ring Opening of Aromatics on Bifunctional Zeolites Conclusions Acknowledgments

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“…[7][8][9] Such hydrocarbons are, however, less suitable as a steamcracker feed, since large amounts of undesired methane will be formed. Only few reports deal with cracking of cyclic hydrocarbons over acidic zeolites in an excess of hydrogen, [10][11][12] and yields of n-alkanes during the conversion of cycloalkanes or aromatics with seven or more carbon atoms are reported to be low.…”

mentioning

confidence: 99%