Catalytic cracking of carinata oil for hydrocarbon biofuel over fresh and regenerated Zn/Na-ZSM-5

Xianhui Zhao; Lin Wei; Shouyun Cheng; Yuhe Cao; James Julson; Zhengrong Gu

doi:10.1016/j.apcata.2015.09.031

Catalytic cracking of carinata oil for hydrocarbon biofuel over fresh and regenerated Zn/Na-ZSM-5

Xianhui Zhao, Lin Wei, Shouyun Cheng, Yuhe Cao, James Julson, Zhengrong Gu

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

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Abstract

Catalytic cracking of carinata oil over fresh and regenerated Zn/Na-ZSM-5 catalyst in a fixed-bed reactor at 450 °C was carried out to produce hydrocarbon biofuel. The effect of the fresh and regenerated Zn/Na-ZSM-5 on the hydrocarbon biofuel's quality and yield was discussed. Characterization of the catalyst, hydrocarbon biofuel and gas were carried out. The hydrocarbon biofuel yield obtained over regenerated Zn/Na-ZSM-5 increased but the coke yield and distillation residual yield decreased, compared to fresh Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 had a minor influence on the density of the hydrocarbon biofuel, but the higher heating value (HHV) decreased, and the viscosity and acid value increased over regenerated Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 reduced the decarboxylation, decarbonylation and dehydrogenation of carinata oil, which caused the lower content of CO₂, CO, H₂ and light hydrocarbons (C₁-C₅). A preliminary test of the distillation residual mixture upgrading over fresh Zn/Na-ZSM-5 was performed, suggesting that the distillation residual mixture could be recycled for further upgrading. The produced gas including H₂, CO and light hydrocarbons might be reused as syngas for ether power generation or production of value chemicals.

Original language	English
Article number	15563
Pages (from-to)	44-55
Number of pages	12
Journal	Applied Catalysis A: General
Volume	507
DOIs	https://doi.org/10.1016/j.apcata.2015.09.031
State	Published - Oct 25 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, and the USDA National Institute of Food and Agriculture with the Grant no. 2011-67009-30076. The authors would like to thank Mr. Ethan Kadis for the proofreading of English writing, Dr. Douglas Raynie and Ms. Changling Qiu for helping in the GC/MS measurement, Dr. Qiquan Qiao, Mr. Ashish Dubey and Mr. Khan Mamun Reza for helping in the XRD, FTIR and SEM-EDS measurement, Dr. Phil Ahrenkiel for helping in the TEM measurement, and Dr. Kasiviswanathan Muthukumarappan and Mr. Umesh Lohani for providing carinata (Brassica) oil. The XRD equipment is supported by the NSF MRI grant (Award No. 1229577). All the support in experiment from Mr. Yinbin Huang and Mr. Yong Yu is gratefully acknowledged. However, only the authors are responsible for the opinions expressed in this paper and for any possible error.

Keywords

Carinata oil
Catalytic cracking
Distillation residual
Hydrocarbon biofuel
Regeneration
Zn/Na-ZSM-5

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title = "Catalytic cracking of carinata oil for hydrocarbon biofuel over fresh and regenerated Zn/Na-ZSM-5",

abstract = "Catalytic cracking of carinata oil over fresh and regenerated Zn/Na-ZSM-5 catalyst in a fixed-bed reactor at 450 °C was carried out to produce hydrocarbon biofuel. The effect of the fresh and regenerated Zn/Na-ZSM-5 on the hydrocarbon biofuel's quality and yield was discussed. Characterization of the catalyst, hydrocarbon biofuel and gas were carried out. The hydrocarbon biofuel yield obtained over regenerated Zn/Na-ZSM-5 increased but the coke yield and distillation residual yield decreased, compared to fresh Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 had a minor influence on the density of the hydrocarbon biofuel, but the higher heating value (HHV) decreased, and the viscosity and acid value increased over regenerated Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 reduced the decarboxylation, decarbonylation and dehydrogenation of carinata oil, which caused the lower content of CO2, CO, H2 and light hydrocarbons (C1-C5). A preliminary test of the distillation residual mixture upgrading over fresh Zn/Na-ZSM-5 was performed, suggesting that the distillation residual mixture could be recycled for further upgrading. The produced gas including H2, CO and light hydrocarbons might be reused as syngas for ether power generation or production of value chemicals.",

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AU - Zhao, Xianhui

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AU - Julson, James

AU - Gu, Zhengrong

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N2 - Catalytic cracking of carinata oil over fresh and regenerated Zn/Na-ZSM-5 catalyst in a fixed-bed reactor at 450 °C was carried out to produce hydrocarbon biofuel. The effect of the fresh and regenerated Zn/Na-ZSM-5 on the hydrocarbon biofuel's quality and yield was discussed. Characterization of the catalyst, hydrocarbon biofuel and gas were carried out. The hydrocarbon biofuel yield obtained over regenerated Zn/Na-ZSM-5 increased but the coke yield and distillation residual yield decreased, compared to fresh Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 had a minor influence on the density of the hydrocarbon biofuel, but the higher heating value (HHV) decreased, and the viscosity and acid value increased over regenerated Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 reduced the decarboxylation, decarbonylation and dehydrogenation of carinata oil, which caused the lower content of CO2, CO, H2 and light hydrocarbons (C1-C5). A preliminary test of the distillation residual mixture upgrading over fresh Zn/Na-ZSM-5 was performed, suggesting that the distillation residual mixture could be recycled for further upgrading. The produced gas including H2, CO and light hydrocarbons might be reused as syngas for ether power generation or production of value chemicals.

AB - Catalytic cracking of carinata oil over fresh and regenerated Zn/Na-ZSM-5 catalyst in a fixed-bed reactor at 450 °C was carried out to produce hydrocarbon biofuel. The effect of the fresh and regenerated Zn/Na-ZSM-5 on the hydrocarbon biofuel's quality and yield was discussed. Characterization of the catalyst, hydrocarbon biofuel and gas were carried out. The hydrocarbon biofuel yield obtained over regenerated Zn/Na-ZSM-5 increased but the coke yield and distillation residual yield decreased, compared to fresh Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 had a minor influence on the density of the hydrocarbon biofuel, but the higher heating value (HHV) decreased, and the viscosity and acid value increased over regenerated Zn/Na-ZSM-5. The regeneration of Zn/Na-ZSM-5 reduced the decarboxylation, decarbonylation and dehydrogenation of carinata oil, which caused the lower content of CO2, CO, H2 and light hydrocarbons (C1-C5). A preliminary test of the distillation residual mixture upgrading over fresh Zn/Na-ZSM-5 was performed, suggesting that the distillation residual mixture could be recycled for further upgrading. The produced gas including H2, CO and light hydrocarbons might be reused as syngas for ether power generation or production of value chemicals.

KW - Carinata oil

KW - Catalytic cracking

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KW - Hydrocarbon biofuel

KW - Regeneration

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Catalytic cracking of carinata oil for hydrocarbon biofuel over fresh and regenerated Zn/Na-ZSM-5

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