Kinetic analysis of support effects of pt-loaded catalysts on toluene hydrogenation at ambient pressure

Ryosuke Atsumi; Xieli Cui; Hideyuki Matsumoto; Keisuke Kobayashi; Keigo Matsuda; Taku Tsujimura; Tetsuya Nanba

doi:10.1627/jpi.62.28

Kinetic analysis of support effects of pt-loaded catalysts on toluene hydrogenation at ambient pressure

Ryosuke Atsumi, Xieli Cui, Hideyuki Matsumoto, Keisuke Kobayashi, Keigo Matsuda, Taku Tsujimura, Tetsuya Nanba

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Toluene hydrogenation reaction for methylcyclohexane (MCH) synthesis via Pt-loaded Al₂O₃ and TiO₂ (Pt/Al₂O₃ and Pt/TiO₂) catalysts were studied in a fixed bed reactor at 398 K - 473 K and ambient pressure. Partial pressures of toluene, H₂, and MCH were 60 to 91, 9 to 23, and 9 to 17 kPa, respectively. Pt-loaded catalysts showed higher activities in the order of Pt/Al₂O₃ > Pt/TiO₂ (anatase-rutile mixture, AR) > Pt/TiO₂ (anatase, A) > Pt/TiO₂ (rutile, R) above 423 K, while Pt/TiO₂ (anatase) showed greatly higher activities at 393 K. Kinetic analysis using rate-based model was conducted to estimate the effects of support species. The correlation between adsorption behavior and catalytic activities was sudied using a Langmuir-Hinshelwood model. The kinetic constants for each catalyst were almost same. It was considered that only kinetic constants cannot explain the catalytic activities. Coverage of toluene and MCH were independent of the reaction rates, however the reaction rates increased as hydrogen coverage increased for all catalysts.

Original language	English
Pages (from-to)	28-36
Number of pages	9
Journal	Journal of The Japan Petroleum Institute
Volume	62
Issue number	1
DOIs	https://doi.org/10.1627/jpi.62.28
Publication status	Published - 2019
Externally published	Yes

Keywords

Hydrogen carrier
Kinetic analysis
Methylcyclohexane
Platinum catalyst
Titanium oxide support
Toluene hydrogenation

ASJC Scopus subject areas

Fuel Technology
Energy Engineering and Power Technology

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10.1627/jpi.62.28

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title = "Kinetic analysis of support effects of pt-loaded catalysts on toluene hydrogenation at ambient pressure",

abstract = "Toluene hydrogenation reaction for methylcyclohexane (MCH) synthesis via Pt-loaded Al2O3 and TiO2 (Pt/Al2O3 and Pt/TiO2) catalysts were studied in a fixed bed reactor at 398 K - 473 K and ambient pressure. Partial pressures of toluene, H2, and MCH were 60 to 91, 9 to 23, and 9 to 17 kPa, respectively. Pt-loaded catalysts showed higher activities in the order of Pt/Al2O3 > Pt/TiO2 (anatase-rutile mixture, AR) > Pt/TiO2 (anatase, A) > Pt/TiO2 (rutile, R) above 423 K, while Pt/TiO2 (anatase) showed greatly higher activities at 393 K. Kinetic analysis using rate-based model was conducted to estimate the effects of support species. The correlation between adsorption behavior and catalytic activities was sudied using a Langmuir-Hinshelwood model. The kinetic constants for each catalyst were almost same. It was considered that only kinetic constants cannot explain the catalytic activities. Coverage of toluene and MCH were independent of the reaction rates, however the reaction rates increased as hydrogen coverage increased for all catalysts.",

keywords = "Hydrogen carrier, Kinetic analysis, Methylcyclohexane, Platinum catalyst, Titanium oxide support, Toluene hydrogenation",

author = "Ryosuke Atsumi and Xieli Cui and Hideyuki Matsumoto and Keisuke Kobayashi and Keigo Matsuda and Taku Tsujimura and Tetsuya Nanba",

year = "2019",

doi = "10.1627/jpi.62.28",

language = "English",

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TY - JOUR

T1 - Kinetic analysis of support effects of pt-loaded catalysts on toluene hydrogenation at ambient pressure

AU - Atsumi, Ryosuke

AU - Cui, Xieli

AU - Matsumoto, Hideyuki

AU - Kobayashi, Keisuke

AU - Matsuda, Keigo

AU - Tsujimura, Taku

AU - Nanba, Tetsuya

PY - 2019

Y1 - 2019

N2 - Toluene hydrogenation reaction for methylcyclohexane (MCH) synthesis via Pt-loaded Al2O3 and TiO2 (Pt/Al2O3 and Pt/TiO2) catalysts were studied in a fixed bed reactor at 398 K - 473 K and ambient pressure. Partial pressures of toluene, H2, and MCH were 60 to 91, 9 to 23, and 9 to 17 kPa, respectively. Pt-loaded catalysts showed higher activities in the order of Pt/Al2O3 > Pt/TiO2 (anatase-rutile mixture, AR) > Pt/TiO2 (anatase, A) > Pt/TiO2 (rutile, R) above 423 K, while Pt/TiO2 (anatase) showed greatly higher activities at 393 K. Kinetic analysis using rate-based model was conducted to estimate the effects of support species. The correlation between adsorption behavior and catalytic activities was sudied using a Langmuir-Hinshelwood model. The kinetic constants for each catalyst were almost same. It was considered that only kinetic constants cannot explain the catalytic activities. Coverage of toluene and MCH were independent of the reaction rates, however the reaction rates increased as hydrogen coverage increased for all catalysts.

AB - Toluene hydrogenation reaction for methylcyclohexane (MCH) synthesis via Pt-loaded Al2O3 and TiO2 (Pt/Al2O3 and Pt/TiO2) catalysts were studied in a fixed bed reactor at 398 K - 473 K and ambient pressure. Partial pressures of toluene, H2, and MCH were 60 to 91, 9 to 23, and 9 to 17 kPa, respectively. Pt-loaded catalysts showed higher activities in the order of Pt/Al2O3 > Pt/TiO2 (anatase-rutile mixture, AR) > Pt/TiO2 (anatase, A) > Pt/TiO2 (rutile, R) above 423 K, while Pt/TiO2 (anatase) showed greatly higher activities at 393 K. Kinetic analysis using rate-based model was conducted to estimate the effects of support species. The correlation between adsorption behavior and catalytic activities was sudied using a Langmuir-Hinshelwood model. The kinetic constants for each catalyst were almost same. It was considered that only kinetic constants cannot explain the catalytic activities. Coverage of toluene and MCH were independent of the reaction rates, however the reaction rates increased as hydrogen coverage increased for all catalysts.

KW - Hydrogen carrier

KW - Kinetic analysis

KW - Methylcyclohexane

KW - Platinum catalyst

KW - Titanium oxide support

KW - Toluene hydrogenation

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Kinetic analysis of support effects of pt-loaded catalysts on toluene hydrogenation at ambient pressure

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