Effect of Pt on stability of nano-scale ZSM-5 catalyst for toluene alkylation with methanol into p-xylene

Yan Zhao; Wei Tan; Hongyu Wu; Anfeng Zhang; Min Liu; Guimin Li; Xiangsheng Wang; Chunshan Song; Xinwen Guo

doi:10.1016/j.cattod.2010.05.036

Effect of Pt on stability of nano-scale ZSM-5 catalyst for toluene alkylation with methanol into p-xylene

Yan Zhao, Wei Tan, Hongyu Wu, Anfeng Zhang, Min Liu, Guimin Li, Xiangsheng Wang, Chunshan Song, Xinwen Guo

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

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Abstract

Shape-selective methylation of toluene (T) with methanol (M) was carried out in continuous flow fixed-bed reactor over Pt-modified nano-scale HZSM-5 catalysts, and excellent stability was obtained. Even after 500 h on stream, toluene conversion of 22.0-23.0% was achieved simultaneously with the para-selectivity of >98%. The presence of Pt on the modified nano-scale HZSM-5 solves the apparent paradox of high para-selectivity and low stability. Catalysts were characterized by using X-ray diffraction (XRD), temperature programmed desorption of ammonia (NH₃-TPD), Pyridine IR (Py-IR), TG-SDTA, scanning electron microscope (SEM), etc. The results show that significant enhancement in stability over Pt-modified nano-scale HZSM-5 catalysts is mainly due to good hydrogenation properties of Pt particles.

Original language	English (US)
Pages (from-to)	179-183
Number of pages	5
Journal	Catalysis Today
Volume	160
Issue number	1
DOIs	https://doi.org/10.1016/j.cattod.2010.05.036
State	Published - Feb 2 2011

All Science Journal Classification (ASJC) codes

Catalysis
General Chemistry

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10.1016/j.cattod.2010.05.036

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title = "Effect of Pt on stability of nano-scale ZSM-5 catalyst for toluene alkylation with methanol into p-xylene",

abstract = "Shape-selective methylation of toluene (T) with methanol (M) was carried out in continuous flow fixed-bed reactor over Pt-modified nano-scale HZSM-5 catalysts, and excellent stability was obtained. Even after 500 h on stream, toluene conversion of 22.0-23.0% was achieved simultaneously with the para-selectivity of >98%. The presence of Pt on the modified nano-scale HZSM-5 solves the apparent paradox of high para-selectivity and low stability. Catalysts were characterized by using X-ray diffraction (XRD), temperature programmed desorption of ammonia (NH3-TPD), Pyridine IR (Py-IR), TG-SDTA, scanning electron microscope (SEM), etc. The results show that significant enhancement in stability over Pt-modified nano-scale HZSM-5 catalysts is mainly due to good hydrogenation properties of Pt particles.",

author = "Yan Zhao and Wei Tan and Hongyu Wu and Anfeng Zhang and Min Liu and Guimin Li and Xiangsheng Wang and Chunshan Song and Xinwen Guo",

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doi = "10.1016/j.cattod.2010.05.036",

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T1 - Effect of Pt on stability of nano-scale ZSM-5 catalyst for toluene alkylation with methanol into p-xylene

AU - Zhao, Yan

AU - Tan, Wei

AU - Wu, Hongyu

AU - Zhang, Anfeng

AU - Liu, Min

AU - Li, Guimin

AU - Wang, Xiangsheng

AU - Song, Chunshan

AU - Guo, Xinwen

PY - 2011/2/2

Y1 - 2011/2/2

N2 - Shape-selective methylation of toluene (T) with methanol (M) was carried out in continuous flow fixed-bed reactor over Pt-modified nano-scale HZSM-5 catalysts, and excellent stability was obtained. Even after 500 h on stream, toluene conversion of 22.0-23.0% was achieved simultaneously with the para-selectivity of >98%. The presence of Pt on the modified nano-scale HZSM-5 solves the apparent paradox of high para-selectivity and low stability. Catalysts were characterized by using X-ray diffraction (XRD), temperature programmed desorption of ammonia (NH3-TPD), Pyridine IR (Py-IR), TG-SDTA, scanning electron microscope (SEM), etc. The results show that significant enhancement in stability over Pt-modified nano-scale HZSM-5 catalysts is mainly due to good hydrogenation properties of Pt particles.

AB - Shape-selective methylation of toluene (T) with methanol (M) was carried out in continuous flow fixed-bed reactor over Pt-modified nano-scale HZSM-5 catalysts, and excellent stability was obtained. Even after 500 h on stream, toluene conversion of 22.0-23.0% was achieved simultaneously with the para-selectivity of >98%. The presence of Pt on the modified nano-scale HZSM-5 solves the apparent paradox of high para-selectivity and low stability. Catalysts were characterized by using X-ray diffraction (XRD), temperature programmed desorption of ammonia (NH3-TPD), Pyridine IR (Py-IR), TG-SDTA, scanning electron microscope (SEM), etc. The results show that significant enhancement in stability over Pt-modified nano-scale HZSM-5 catalysts is mainly due to good hydrogenation properties of Pt particles.

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Effect of Pt on stability of nano-scale ZSM-5 catalyst for toluene alkylation with methanol into p-xylene

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