Propane dehydrogenation on PtSn/ZSM-5 catalyst: Effect of tin as a promoter

Zhang, Yiwei; Zhou, Yuming; Qiu, Anding; Wang, Yu; Xu, Yun Hua; Wu, Peng

doi:10.1016/j.catcom.2006.03.016

Cited by 161 publications

(75 citation statements)

References 30 publications

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“…, while the latter could be associated with the reduction of Sn 2? species to form Sn 0 species [8]. The TPR profile of Ca/ZSM-5 represented no reduction peaks, thus indicating that the Ca additives were not reduced in the reduction process.…”

Section: H 2 -Tprmentioning

confidence: 96%

“…It can be observed that the XRD patterns between the pure ZSM-5 and the different catalysts are very similar, which implies that the zeolite structure is preserved very well during the process of impregnation. Based on our previous work [8], the platinum species were well dispersed on the external surface of the catalyst, and part of tin species could enter the main channels of ZSM-5 zeolite. The peaks of Platinum and tin are not observed due to the low metals concentration.…”

Section: Catalysts Characterizationmentioning

confidence: 99%

“…The role of the Sn in Pt-Sn catalysts has been extensively investigated in several studies [4][5][6][7][8][9][10]. Both of geometric and electronic factors have been proposed to explain the tin modification effect [9,10].…”

Section: Introductionmentioning

confidence: 98%

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Influence of Calcium Addition on Catalytic Properties of PtSn/ZSM-5 Catalyst for Propane Dehydrogenation

et al. 2009

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In this work the influence of the Ca addition to PtSn/ZSM-5 catalyst on its performance for propane dehydrogenation was investigated. The catalysts were characterized by X-ray diffraction, BET analysis, TEM, NH 3 -TPD, TPO and TG. Results showed that the addition of calcium could not only modify the characteristics and properties of both acid and metal function but also suppress coke deposits on the catalyst. The addition of 0.9 wt% Ca to PtSn/ZSM-5 prompted catalytic activity. However, the incorporation of excessive Ca resulted in catalyst deactivation. TPR results implied that excessive Ca promoted the reduction of oxidized tin species to Sn 0 . The Sn 0 probably could interact with Pt to produce a PtSn alloy which led to the diminution of catalytic activity.

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Section: H 2 -Tprmentioning

confidence: 96%

Section: Catalysts Characterizationmentioning

confidence: 99%

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Influence of Calcium Addition on Catalytic Properties of PtSn/ZSM-5 Catalyst for Propane Dehydrogenation

et al. 2009

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“…This is the reason for the introduction of the M2 Forming process by Mobil [2], which converts light paraffins to aromatics over H-ZSM-5 zeolite catalysts. British Petroleum (BP) and Universal Oil Products (UOP) later developed the Cyclar process [1,23], which converts Liquid Petroleum Gas (LPG) to BTX chemicals.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years oxidative or non-oxidative dehydrogenation of light paraffins, over zeolitic catalysts, was investigated by various researchers, as an alternative way for the selective production of light olefins, yielding promising results [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Propane Reactions over Faujasite Structure Zeolites Type-X and USY: Effect of Zeolite Silica over Alumina Ratio, Strength of Acidity and Kind of Exchanged Metal Ion

et al. 2007

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In this work we prepared various zeolite-X and USY samples partially exchanged with copper, iron and platinum. These samples were characterized by XRD, Chemical Analysis, SEM-EDS, N 2 -adsorption-desorption, ammonia-TPD, and tested as catalysts in high temperature (400 and 550°C) propane transformation. The obtained results revealed the strong effect of Si/Al ratio in faujasite zeolite structure, the number and strength of acid sites and of the presence of different metal ions in countered ion sites, on the catalytic activity and selectivity of zeolite-X and USY. The highest propane dehydrogenation activity was achieved with the platinum-exchanged X zeolite (~11.2% propylene yield,~31% selectivity). On the contrary USY zeolites showed high cracking capability and relatively low dehydrogenation activity excepting the platinum-exchanged sample which yielded notably high aromatization products.

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Modeling and process simulation of hollow fiber membrane reactor systems for propane dehydrogenation

et al. 2017

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We report a detailed modeling analysis of membrane reactor systems for propane dehydrogenation (PDH), by integrating a two‐dimensional (2‐D) nonisothermal model of a packed bed membrane reactor (PBMR) with ASPEN process simulations for the overall PDH plant including downstream separations processes. PBMRs based on ceramic hollow fiber membranes—with catalyst placement on the shell side—are found to be a viable route, whereas conventional tubular membranes are prohibitively expensive. The overall impact of the PBMR on the PDH plant (e.g., required dimensions, catalyst amount, overall energy use in reaction and downstream separation) is determined. Large savings in overall energy use and catalyst amounts can be achieved with an appropriate configuration of PBMR stages and optimal sweep/feed ratio. Overall, this work determines a viable design of a membrane reactor‐based PDH plant and shows the potential for miniaturized hollow‐fiber membrane reactors to achieve substantial savings. © 2017 American Institute of Chemical Engineers AIChE J, 63: 4519–4531, 2017

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Propane dehydrogenation on PtSn/ZSM-5 catalyst: Effect of tin as a promoter

Cited by 161 publications

References 30 publications

Influence of Calcium Addition on Catalytic Properties of PtSn/ZSM-5 Catalyst for Propane Dehydrogenation

Influence of Calcium Addition on Catalytic Properties of PtSn/ZSM-5 Catalyst for Propane Dehydrogenation

Propane Reactions over Faujasite Structure Zeolites Type-X and USY: Effect of Zeolite Silica over Alumina Ratio, Strength of Acidity and Kind of Exchanged Metal Ion

Modeling and process simulation of hollow fiber membrane reactor systems for propane dehydrogenation

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