Catalytic cracking of camelina oil for hydrocarbon biofuel over ZSM-5-Zn catalyst

Xianhui Zhao; Lin Wei; Shouyun Cheng; Yinbin Huang; Yong Yu; James Julson

doi:10.1016/j.fuproc.2015.07.033

Catalytic cracking of camelina oil for hydrocarbon biofuel over ZSM-5-Zn catalyst

Xianhui Zhao, Lin Wei, Shouyun Cheng, Yinbin Huang, Yong Yu, James Julson

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

116 Scopus citations

Abstract

Cracking of camelina oil over non-catalyst and ZSM-5 catalyst doped with different Zn concentrations (0, 10, 20 and 30 wt.%) in a fixed-bed reactor was investigated. The fresh and used catalysts were characterized using XRD, FT-IR, BET and TEM. Characterizations of the produced hydrocarbon biofuel, distillation residual and non-condensable gas were carried out. The effect of non-catalyst and catalyst on the physicochemical properties and yield of products was discussed. The results showed that the introduction of Zn did not change the zeolite crystalline structure and ZnO might deposit on the external surface and/or inside the pores of the support ZSM-5. After upgrading, hydrocarbon biofuel had a lower viscosity, lower density, higher heating value (HHV) and higher water content than raw camelina oil. The optimum Zn concentration to ZSM-5 was 20 wt.%, at which the highest hydrocarbon biofuel yield and comprehensively the best quality were obtained. Compared to non-catalytic cracking of camelina oil, the loading of Zn to ZSM-5 could improve some physicochemical properties of the hydrocarbon biofuel. In addition, the loading of Zn to ZSM-5 could facilitate the chemical reactions such as decarbonylation and dehydrogenation.

Original language	English
Pages (from-to)	117-126
Number of pages	10
Journal	Fuel Processing Technology
Volume	139
DOIs	https://doi.org/10.1016/j.fuproc.2015.07.033
State	Published - Jun 2 2015
Externally published	Yes

Funding

This study was funded by the U.S. Department of Transportation through NC Sun Grant Initiative under Grant No. SA0700149 . The authors would like to thank Dr. Douglas Raynie, Ms. Changling Qiu and Ms. Shanmugapriya Dharmarajan for helping in the GC/MS measurement, Dr. Qiquan Qiao and Mr. Ashish Dubey for helping in the XRD and FT-IR analysis, Dr. Phil Ahrenkiel for helping in the TEM analysis, and Dr. Zhengrong Gu and Mr. Yuhe Cao for helping in the BET measurement. The XRD equipment is supported by the NSF MRI grant (Award No. 1229577 ). All the support is gratefully acknowledged. However, only the authors are responsible for the opinions expressed in this paper and for any possible error.

Keywords

Biofuel
Camelina oil
Catalytic cracking
Gas
ZSM-5-Zn

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title = "Catalytic cracking of camelina oil for hydrocarbon biofuel over ZSM-5-Zn catalyst",

abstract = "Cracking of camelina oil over non-catalyst and ZSM-5 catalyst doped with different Zn concentrations (0, 10, 20 and 30 wt.\%) in a fixed-bed reactor was investigated. The fresh and used catalysts were characterized using XRD, FT-IR, BET and TEM. Characterizations of the produced hydrocarbon biofuel, distillation residual and non-condensable gas were carried out. The effect of non-catalyst and catalyst on the physicochemical properties and yield of products was discussed. The results showed that the introduction of Zn did not change the zeolite crystalline structure and ZnO might deposit on the external surface and/or inside the pores of the support ZSM-5. After upgrading, hydrocarbon biofuel had a lower viscosity, lower density, higher heating value (HHV) and higher water content than raw camelina oil. The optimum Zn concentration to ZSM-5 was 20 wt.\%, at which the highest hydrocarbon biofuel yield and comprehensively the best quality were obtained. Compared to non-catalytic cracking of camelina oil, the loading of Zn to ZSM-5 could improve some physicochemical properties of the hydrocarbon biofuel. In addition, the loading of Zn to ZSM-5 could facilitate the chemical reactions such as decarbonylation and dehydrogenation.",

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author = "Xianhui Zhao and Lin Wei and Shouyun Cheng and Yinbin Huang and Yong Yu and James Julson",

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AU - Zhao, Xianhui

AU - Wei, Lin

AU - Cheng, Shouyun

AU - Huang, Yinbin

AU - Yu, Yong

AU - Julson, James

PY - 2015/6/2

Y1 - 2015/6/2

N2 - Cracking of camelina oil over non-catalyst and ZSM-5 catalyst doped with different Zn concentrations (0, 10, 20 and 30 wt.%) in a fixed-bed reactor was investigated. The fresh and used catalysts were characterized using XRD, FT-IR, BET and TEM. Characterizations of the produced hydrocarbon biofuel, distillation residual and non-condensable gas were carried out. The effect of non-catalyst and catalyst on the physicochemical properties and yield of products was discussed. The results showed that the introduction of Zn did not change the zeolite crystalline structure and ZnO might deposit on the external surface and/or inside the pores of the support ZSM-5. After upgrading, hydrocarbon biofuel had a lower viscosity, lower density, higher heating value (HHV) and higher water content than raw camelina oil. The optimum Zn concentration to ZSM-5 was 20 wt.%, at which the highest hydrocarbon biofuel yield and comprehensively the best quality were obtained. Compared to non-catalytic cracking of camelina oil, the loading of Zn to ZSM-5 could improve some physicochemical properties of the hydrocarbon biofuel. In addition, the loading of Zn to ZSM-5 could facilitate the chemical reactions such as decarbonylation and dehydrogenation.

AB - Cracking of camelina oil over non-catalyst and ZSM-5 catalyst doped with different Zn concentrations (0, 10, 20 and 30 wt.%) in a fixed-bed reactor was investigated. The fresh and used catalysts were characterized using XRD, FT-IR, BET and TEM. Characterizations of the produced hydrocarbon biofuel, distillation residual and non-condensable gas were carried out. The effect of non-catalyst and catalyst on the physicochemical properties and yield of products was discussed. The results showed that the introduction of Zn did not change the zeolite crystalline structure and ZnO might deposit on the external surface and/or inside the pores of the support ZSM-5. After upgrading, hydrocarbon biofuel had a lower viscosity, lower density, higher heating value (HHV) and higher water content than raw camelina oil. The optimum Zn concentration to ZSM-5 was 20 wt.%, at which the highest hydrocarbon biofuel yield and comprehensively the best quality were obtained. Compared to non-catalytic cracking of camelina oil, the loading of Zn to ZSM-5 could improve some physicochemical properties of the hydrocarbon biofuel. In addition, the loading of Zn to ZSM-5 could facilitate the chemical reactions such as decarbonylation and dehydrogenation.

KW - Biofuel

KW - Camelina oil

KW - Catalytic cracking

KW - Gas

KW - ZSM-5-Zn

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ER -

Catalytic cracking of camelina oil for hydrocarbon biofuel over ZSM-5-Zn catalyst

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